1
|
Barkhordari A, Mashayekhi HR, Amiri P, Özçelik S, Hanife F, Azizian-Kalandaragh Y. Performance of machine learning algorithms in spectroscopic ellipsometry data analysis of ZnTiO 3 nanocomposite. Sci Rep 2024; 14:1617. [PMID: 38238477 PMCID: PMC10796325 DOI: 10.1038/s41598-023-50620-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 12/22/2023] [Indexed: 01/22/2024] Open
Abstract
In this research, the optical properties of the PVP: ZnTiO3 nanocomposite are studied using the spectroscopic ellipsometry technique. The preparation procedure of the ZnTiO3 nanocomposite is explained in detail. The absorbance/transmittance, surface morphology, structural information, chemical identification, and surface topography of the ZnTiO3 nanocomposite is studied using UV-Vis spectroscopy, field-emission scanning electron microscopy, Raman spectroscopy, Fourier transform infra-red, and atomic force microscopy, respectively. The ellipsometry method is used to obtain the spectra of the real and imaginary parts of the dielectric function and refractive index in the photon energy range of 0.59-4.59 eV. Moreover, using two machine learning algorithms, namely artificial neural network and support vector regression methods, the ellipsometric parameters ψ and Δ are analyzed and compared with non-linear regression. The error and accuracy of each three methods, as well as the time required for their execution, are calculated to compare their suitability in the ellipsometric data analysis. Also, the absorption coefficient was used to determine the band gap energy of the ZnTiO3 nanocomposite, which is found to be 3.83 eV. The second-energy derivative of the dielectric function is utilized to identify six critical point energies of the prepared sample. Finally, the spectral-dependent optical loss function and optical conductivity of the ZnTiO3 nanocomposite are investigated.
Collapse
Affiliation(s)
- Ali Barkhordari
- Faculty of Physics, Shahid Bahonar University of Kerman, Kerman, Iran.
| | | | - Pari Amiri
- Department of Engineering Sciences, University of Mohaghegh Ardabili, Namin, Iran
- Department of Engineering Sciences, Faculty of Advanced Technologies, Sabalan University of Advanced Technologies (SUAT), Namin, Iran
| | - Süleyman Özçelik
- Department of Photonics, Faculty of Applied Sciences, Gazi University, 06500, Ankara, Turkey
- Photonics Application and Research Center, Gazi University, 06500, Ankara, Turkey
| | - Ferhat Hanife
- Department of Photonics, Faculty of Applied Sciences, Gazi University, 06500, Ankara, Turkey
- Photonics Application and Research Center, Gazi University, 06500, Ankara, Turkey
| | - Yashar Azizian-Kalandaragh
- Department of Physics, University of Mohaghegh Ardabili, P.O. Box 179, Ardabil, Iran
- Department of Photonics, Faculty of Applied Sciences, Gazi University, 06500, Ankara, Turkey
- Photonics Application and Research Center, Gazi University, 06500, Ankara, Turkey
| |
Collapse
|
2
|
Saliba M, Atanas JP, Howayek TM, Habchi R. Molybdenum disulfide, exfoliation methods and applications to photocatalysis: a review. NANOSCALE ADVANCES 2023; 5:6787-6803. [PMID: 38059039 PMCID: PMC10696921 DOI: 10.1039/d3na00741c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 11/20/2023] [Indexed: 12/08/2023]
Abstract
This review provides a deep analysis of the mechanical and optoelectronic characteristics of MoS2. It offers a comprehensive assessment of diverse exfoliation methods, encompassing chemical, liquid-phase, mechanical, and microwave-driven techniques. The review also explores MoS2's versatile applications across various domains and meticulously examines its significance as a photocatalyst. Notably, it highlights key factors influencing the photocatalytic process. Indeed, the enhanced visible light responsiveness of materials like MoS2 holds immense potential across a wide range of applications. MoS2's remarkable photocatalytic response to visible light, coupled with its notable stability, opens up numerous possibilities in various fields. This unique combination makes MoS2 a promising candidate for applications that require efficient and stable photocatalytic processes, such as environmental remediation, water purification, and energy generation. Its attributes contribute significantly to addressing contemporary challenges and advancing sustainable technologies.
Collapse
Affiliation(s)
- Michelle Saliba
- EC2M, Faculty of Sciences, Fanar, Lebanese University 2, Campus Pierre Gemayel 90656 Lebanon
| | - Jean Pierre Atanas
- University of Balamand Dubai, Department of Physics D. I. Park-1 Dubai United Arab Emirates
| | - Tia Maria Howayek
- EC2M, Faculty of Sciences, Fanar, Lebanese University 2, Campus Pierre Gemayel 90656 Lebanon
| | - Roland Habchi
- EC2M, Faculty of Sciences, Fanar, Lebanese University 2, Campus Pierre Gemayel 90656 Lebanon
- Functional Materials Group, Gulf University for Science and Technology Hawally Kuwait
| |
Collapse
|
3
|
Andleeb S, Wang X, Dong H, Valligatla S, Saggau CN, Ma L, Schmidt OG, Zhu F. Fast-Response Micro-Phototransistor Based on MoS 2/Organic Molecule Heterojunction. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13091491. [PMID: 37177036 PMCID: PMC10180112 DOI: 10.3390/nano13091491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 04/21/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023]
Abstract
Over the past years, molybdenum disulfide (MoS2) has been the most extensively studied two-dimensional (2D) semiconductormaterial. With unique electrical and optical properties, 2DMoS2 is considered to be a promising candidate for future nanoscale electronic and optoelectronic devices. However, charge trapping leads to a persistent photoconductance (PPC), hindering its use for optoelectronic applications. To overcome these drawbacks and improve the optoelectronic performance, organic semiconductors (OSCs) are selected to passivate surface defects, tune the optical characteristics, and modify the doping polarity of 2D MoS2. Here, we demonstrate a fast photoresponse in multilayer (ML) MoS2 by addressing a heterojunction interface with vanadylphthalocyanine (VOPc) molecules. The MoS2/VOPc van der Waals interaction that has been established encourages the PPC effect in MoS2 by rapidly segregating photo-generated holes, which move away from the traps of MoS2 toward the VOPc molecules. The MoS2/VOPc phototransistor exhibits a fast photo response of less than 15 ms for decay and rise, which is enhanced by 3ordersof magnitude in comparison to that of a pristine MoS2-based phototransistor (seconds to tens of seconds). This work offers a means to realize high-performance transition metal dichalcogenide (TMD)-based photodetection with a fast response speed.
Collapse
Affiliation(s)
- Shaista Andleeb
- Material Systems for Nanoelectronics, Chemnitz University of Technology, 09107 Chemnitz, Germany
- Leibniz-Institute für Festköper- und Werkstoffforschung Dresden, 01069 Dresden, Germany
- Research Center for Materials, Architectures, and Integration of Nanomembranes (MAIN), Chemnitz University of Technology, 09126 Chemnitz, Germany
| | - Xiaoyu Wang
- Leibniz-Institute für Festköper- und Werkstoffforschung Dresden, 01069 Dresden, Germany
- Department of Physics, School of Science, Hainan University, Haikou 570228, China
| | - Haiyun Dong
- Leibniz-Institute für Festköper- und Werkstoffforschung Dresden, 01069 Dresden, Germany
| | - Sreeramulu Valligatla
- Leibniz-Institute für Festköper- und Werkstoffforschung Dresden, 01069 Dresden, Germany
| | - Christian Niclaas Saggau
- Material Systems for Nanoelectronics, Chemnitz University of Technology, 09107 Chemnitz, Germany
- Leibniz-Institute für Festköper- und Werkstoffforschung Dresden, 01069 Dresden, Germany
- Research Center for Materials, Architectures, and Integration of Nanomembranes (MAIN), Chemnitz University of Technology, 09126 Chemnitz, Germany
| | - Libo Ma
- Leibniz-Institute für Festköper- und Werkstoffforschung Dresden, 01069 Dresden, Germany
| | - Oliver G Schmidt
- Material Systems for Nanoelectronics, Chemnitz University of Technology, 09107 Chemnitz, Germany
- Leibniz-Institute für Festköper- und Werkstoffforschung Dresden, 01069 Dresden, Germany
- Research Center for Materials, Architectures, and Integration of Nanomembranes (MAIN), Chemnitz University of Technology, 09126 Chemnitz, Germany
- School of Science, Dresden University of Technology, 01069 Dresden, Germany
| | - Feng Zhu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| |
Collapse
|
4
|
Kumar V, Mishra RK, Choi GJ, Ryu JW, Kumar P, Gwag JS. Optical and dielectric response of two-dimensional WX 2 (X = Cl, O, S, Se, Te) monolayers: A comprehensive study based on density functional theory. LUMINESCENCE 2023. [PMID: 36740829 DOI: 10.1002/bio.4453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 01/17/2023] [Accepted: 02/01/2023] [Indexed: 02/07/2023]
Abstract
Here, we study the dielectric and optical properties of two-dimensional (2D) WX2 monolayers, where X is Cl, O, S, Se, and Te. First principle electronic band structure calculations reveal that all materials are direct band gap semiconductors except WO2 and WCl2 , which are found to be indirect band gap semiconducting 2D materials. The dielectric response of these materials is also systematically investigated. The obtained results suggest that these materials are suitable as dielectric materials to suppress unwanted signal noise. The optical properties of these 2D materials, such as absorption, reflection and extinction coefficients, refractive index, and optical conductivity, are also calculated from the dielectric function. It is found that these materials exhibit excellent optical response. The present electronic, dielectric, and optical findings indicate that WX2 monolayers have an opportunity in electronic, optical, and optoelectronic device applications.
Collapse
Affiliation(s)
- Vipin Kumar
- Department of Physics, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, South Korea
| | - Rajneesh Kumar Mishra
- Department of Physics, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, South Korea
| | - Gyu Jin Choi
- Department of Physics, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, South Korea
| | - Jeong Won Ryu
- Department of Physics, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, South Korea
| | - Pushpendra Kumar
- Department of Physics, Manipal University Jaipur, Jaipur, Rajasthan, 303007, India.,MSRC, Manipal University Jaipur, Jaipur, Rajasthan, 303007, India
| | - Jin Seog Gwag
- Department of Physics, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, South Korea
| |
Collapse
|
5
|
Barhoumi M, Bouzidi S, Sfina N, Bouelnor GAA. First-principles calculations to investigate electronic and optical properties of Ti 4GaPbX 2 (X = C or N) two-dimensional materials. Chem Phys 2023. [DOI: 10.1016/j.chemphys.2022.111728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
|
6
|
Gu H, Guo Z, Huang L, Fang M, Liu S. Investigations of Optical Functions and Optical Transitions of 2D Semiconductors by Spectroscopic Ellipsometry and DFT. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:196. [PMID: 36616106 PMCID: PMC9823946 DOI: 10.3390/nano13010196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 12/28/2022] [Accepted: 12/29/2022] [Indexed: 06/17/2023]
Abstract
Optical functions and transitions are essential for a material to reveal the light-matter interactions and promote its applications. Here, we propose a quantitative strategy to systematically identify the critical point (CP) optical transitions of 2D semiconductors by combining the spectroscopic ellipsometry (SE) and DFT calculations. Optical functions and CPs are determined by SE, and connected to DFT band structure and projected density of states via equal-energy and equal-momentum lines. The combination of SE and DFT provides a powerful tool to investigate the CP optical transitions, including the transition energies and positions in Brillouin zone (BZ), and the involved energy bands and carries. As an example, the single-crystal monolayer WS2 is investigated by the proposed method. Results indicate that six excitonic-type CPs can be quantitatively distinguished in optical function of the monolayer WS2 over the spectral range of 245-1000 nm. These CPs are identified as direct optical transitions from three highest valence bands to three lowest conduction bands at high symmetry points in BZ contributed by electrons in S-3p and W-5d orbitals. Results and discussion on the monolayer WS2 demonstrate the effectiveness and advantages of the proposed method, which is general and can be easily extended to other materials.
Collapse
Affiliation(s)
- Honggang Gu
- State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science & Technology, Wuhan 430074, China
- Optics Valley Laboratory, Wuhan 430074, China
| | - Zhengfeng Guo
- State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science & Technology, Wuhan 430074, China
- Innovation Institute, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Liusheng Huang
- Innovation Institute, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Mingsheng Fang
- State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science & Technology, Wuhan 430074, China
| | - Shiyuan Liu
- State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science & Technology, Wuhan 430074, China
- Innovation Institute, Huazhong University of Science and Technology, Wuhan 430074, China
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
| |
Collapse
|
7
|
Juričić V, Muñoz E, Soto-Garrido R. Optical Conductivity as a Probe of the Interaction-Driven Metal in Rhombohedral Trilayer Graphene. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3727. [PMID: 36364504 PMCID: PMC9657299 DOI: 10.3390/nano12213727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 10/19/2022] [Accepted: 10/20/2022] [Indexed: 06/16/2023]
Abstract
Study of the strongly correlated states in van der Waals heterostructures is one of the central topics in modern condensed matter physics. Among these, the rhombohedral trilayer graphene (RTG) occupies a prominent place since it hosts a variety of interaction-driven phases, with the metallic ones yielding exotic superconducting orders upon doping. Motivated by these experimental findings, we show within the framework of the low-energy Dirac theory that the optical conductivity can distinguish different candidates for a paramagnetic metallic ground state in this system. In particular, this observable shows a single peak in the fully gapped valence-bond state. On the other hand, the bond-current state features two pronounced peaks in the optical conductivity as the probing frequency increases. Finally, the rotational symmetry breaking charge-density wave exhibits a minimal conductivity with the value independent of the amplitude of the order parameter, which corresponds precisely to the splitting of the two cubic nodal points at the two valleys into two triplets of the band touching points featuring linearly dispersing quasiparticles. These features represent the smoking gun signatures of different candidate order parameters for the paramagnetic metallic ground state, which should motivate further experimental studies of the RTG.
Collapse
Affiliation(s)
- Vladimir Juričić
- Departamento de Física, Universidad Técnica Federico Santa María, Casilla 110, Valparaíso 2340000, Chile
- Nordita, KTH Royal Institute of Technology and Stockholm University, Hannes Alfvéns väg 12, 106 91 Stockholm, Sweden
| | - Enrique Muñoz
- Facultad de Física, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Santiago 8331150, Chile
| | - Rodrigo Soto-Garrido
- Facultad de Física, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Santiago 8331150, Chile
| |
Collapse
|
8
|
Mannix AJ, Ye A, Sung SH, Ray A, Mujid F, Park C, Lee M, Kang JH, Shreiner R, High AA, Muller DA, Hovden R, Park J. Robotic four-dimensional pixel assembly of van der Waals solids. NATURE NANOTECHNOLOGY 2022; 17:361-366. [PMID: 35075299 DOI: 10.1038/s41565-021-01061-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 11/25/2021] [Indexed: 06/14/2023]
Abstract
Van der Waals (vdW) solids can be engineered with atomically precise vertical composition through the assembly of layered two-dimensional materials1,2. However, the artisanal assembly of structures from micromechanically exfoliated flakes3,4 is not compatible with scalable and rapid manufacturing. Further engineering of vdW solids requires precisely designed and controlled composition over all three spatial dimensions and interlayer rotation. Here, we report a robotic four-dimensional pixel assembly method for manufacturing vdW solids with unprecedented speed, deliberate design, large area and angle control. We used the robotic assembly of prepatterned 'pixels' made from atomically thin two-dimensional components. Wafer-scale two-dimensional material films were grown, patterned through a clean, contact-free process and assembled using engineered adhesive stamps actuated by a high-vacuum robot. We fabricated vdW solids with up to 80 individual layers, consisting of 100 × 100 μm2 areas with predesigned patterned shapes, laterally/vertically programmed composition and controlled interlayer angle. This enabled efficient optical spectroscopic assays of the vdW solids, revealing new excitonic and absorbance layer dependencies in MoS2. Furthermore, we fabricated twisted N-layer assemblies, where we observed atomic reconstruction of twisted four-layer WS2 at high interlayer twist angles of ≥4°. Our method enables the rapid manufacturing of atomically resolved quantum materials, which could help realize the full potential of vdW heterostructures as a platform for novel physics2,5,6 and advanced electronic technologies7,8.
Collapse
Affiliation(s)
- Andrew J Mannix
- James Franck Institute, University of Chicago, Chicago, IL, USA
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
| | - Andrew Ye
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, USA
| | - Suk Hyun Sung
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Ariana Ray
- School of Applied and Engineering Physics, Cornell University, Ithaca, NY, USA
| | - Fauzia Mujid
- Department of Chemistry, University of Chicago, Chicago, IL, USA
| | - Chibeom Park
- Department of Chemistry, University of Chicago, Chicago, IL, USA
| | - Myungjae Lee
- James Franck Institute, University of Chicago, Chicago, IL, USA
| | - Jong-Hoon Kang
- Department of Chemistry, University of Chicago, Chicago, IL, USA
| | - Robert Shreiner
- Department of Physics, University of Chicago, Chicago, IL, USA
| | - Alexander A High
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, USA
- Center for Molecular Engineering and Materials Science Division, Argonne National Laboratory, Lemont, IL, USA
| | - David A Muller
- School of Applied and Engineering Physics, Cornell University, Ithaca, NY, USA
- Kavli Institute at Cornell for Nanoscale Science, Ithaca, NY, USA
| | - Robert Hovden
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Jiwoong Park
- James Franck Institute, University of Chicago, Chicago, IL, USA.
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, USA.
- Department of Chemistry, University of Chicago, Chicago, IL, USA.
| |
Collapse
|
9
|
Tang X, Wang S, Liang Y, Bai D, Xu J, Wang Y, Chen C, Liu X, Wu S, Wen Y, Jiang D, Zhang Z. High-performance, self-powered flexible MoS 2 photodetectors with asymmetric van der Waals gaps. Phys Chem Chem Phys 2022; 24:7323-7330. [PMID: 35262113 DOI: 10.1039/d1cp05602f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With an urgent demand for low-energy-consumption and wearable devices, it is desirable to find an easy, effective, and low-cost method to fabricate self-powered flexible photodetectors with simple configurations and high-performance. Self-powered photodetectors are normally fabricated based on either two different materials or the same material in contact with two different metal electrodes. Here, a flexible MoS2 photodetector with the same Au electrodes was fabricated on a polyethylene terephthalate (PET) substrate which exhibits self-powered properties. To our knowledge, its configuration is the simplest, and the fabrication process is easy to implement. At a bias of 0 V, the photodetector exhibits a high responsivity of 431 mA W-1, a short response/recovery time of 40 ms/40 ms, and excellent flexibility. Compared with those at a bias of 2 V, a dark current is sufficiently suppressed, and the response/recovery speed is significantly improved. It is found that the driving force of the self-powered photodetector is provided by the asymmetric Schottky barriers originating from the spontaneous generation of two van der Waals gaps with different widths. The asymmetric barriers exist stably at the interfaces between the 2D material and Au electrodes as further observed for ReS2 or GaSe flakes, which show the generality of asymmetric Schottky barriers between the 2D material and Au electrodes. The discovery here thus gives a new way to generate asymmetric Schottky barriers and develop high-performance self-powered photodetectors.
Collapse
Affiliation(s)
- Xiaoqiu Tang
- School of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, P. R. China.
| | - Shuai Wang
- School of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, P. R. China.
| | - Yao Liang
- School of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, P. R. China.
| | - Dongwei Bai
- School of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, P. R. China.
| | - Jiyuan Xu
- School of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, P. R. China.
| | - Yingying Wang
- Department of Optoelectronic Science, Harbin Institute of Technology at Weihai, Weihai 264209, P. R. China
| | - Chaoyu Chen
- School of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, P. R. China.
| | - Xiang Liu
- School of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, P. R. China.
| | - Sumei Wu
- School of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, P. R. China.
| | - Yang Wen
- School of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, P. R. China.
| | - Dayong Jiang
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, P. R. China.
| | - Zhihua Zhang
- School of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, P. R. China.
| |
Collapse
|
10
|
Quan N, Zhang C, Mu T, Li S, You C. Snapshot spectroscopic Mueller matrix polarimetry based on spectral modulation with increased channel bandwidth. OPTICS EXPRESS 2021; 29:31607-31614. [PMID: 34615251 DOI: 10.1364/oe.440026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 09/01/2021] [Indexed: 06/13/2023]
Abstract
This paper presents a snapshot spectroscopic Mueller matrix polarimetry based on spectral modulation. The polarization state generator consists of a linear polarizer in front of two high-order retarders, and the polarization state analyzer is formed by two non-polarization beam splitters incorporated with three high-order retarder/linear analyzer pairs. It can simultaneously generate three modulated spectra used for reconstructing the 16 spectroscopic Mueller elements of the sample. Since each of the modulated spectra produces seven separate channels equally spaced in the Fourier domain, the channel bandwidth can be enhanced efficiently compared with the conventional spectrally modulated spectroscopic Mueller matrix polarimetry. The feasibility of the proposed spectroscopic Mueller matrix polarimetry is demonstrated by the experimental measurement of an achromatic quarter-wave plate.
Collapse
|
11
|
Quan N, Zhang C, Mu T, You C. Spectroscopic Mueller matrix polarimeter based on spectro-temporal modulation. OPTICS EXPRESS 2020; 28:37758-37772. [PMID: 33379605 DOI: 10.1364/oe.409256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 11/18/2020] [Indexed: 06/12/2023]
Abstract
A spectroscopic Mueller matrix polarimeter based on spectro-temporal modulation with a compact, low-cost, and birefringent crystal-based configuration has been developed. The polarization state generator and polarization state analyzer in the system consists of a polarizer in front of two high-order retarders with equal thickness and a rotating achromatic quarter wave-plate followed by a fixed analyzer, respectively. It can acquire the 16 spectroscopic elements of the Mueller matrix in broadband with a faster measurement speed than that of the conventional spectroscopic Mueller matrix polarimeter based on a dual-rotating retarder. In addition, the spectral polarization modulation provided by the polarization state generator can produce five separate channels in the Fourier domain, which leads to a larger bandwidth of each channel than that of the existing spectral modulated spectroscopic Mueller matrix polarimeters. Experiment on the measurements of an achromatic quarter-wave plate oriented at different azimuths and SiO2 thin films deposited on silicon wafers with different thicknesses are carried out to show the feasibility of the developed spectroscopic Mueller matrix polarimeter.
Collapse
|
12
|
Dai H, Li D, Yang B, Li Y. Theoretical research of retarder phase deviation in channeled Mueller matrix spectropolarimeters. OPTICS EXPRESS 2020; 28:13625-13637. [PMID: 32403833 DOI: 10.1364/oe.387406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 04/14/2020] [Indexed: 06/11/2023]
Abstract
Channeled Mueller matrix spectropolarimeters (CMMSPs) have gained increasing popularity in recent years due to no moving parts. However, in order to obtain more accurate measurements, thorough studies on the influence and correction of their systematic errors are still needed. This paper presents a novel perspective for CMMSPs based on a signal processing technique, and propose a coherence demodulation method to extract channel signals in the modulated intensity. From theoretical analysis, the influence of phase deviation resulting from the imperfection of retarders is pinpointed. Meanwhile, the mechanism of phase deviation is described in theory and visually displayed by simulation. To mitigate the interference of retarder phase deviation, this work proposes a way for correction utilizing a vacuum and polarizer as determinant samples. Noticeably, the phase deviations are treated as a whole and represented by polynomials during correction. The reverse process of error mechanism is used to correct the influence. Finally, this means is proved by a series of simulation validations with a detector noise of 30 dB and retarder misalignment errors of 0.5°.
Collapse
|
13
|
Zhang S, Jiang H, Gu H, Chen X, Liu S. High-speed Mueller matrix ellipsometer with microsecond temporal resolution. OPTICS EXPRESS 2020; 28:10873-10887. [PMID: 32403609 DOI: 10.1364/oe.389825] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 03/22/2020] [Indexed: 06/11/2023]
Abstract
A high-speed Mueller matrix ellipsometer (MME) based on photoelastic modulator (PEM) polarization modulation and division-of-amplitude polarization demodulation has been developed, with which a temporal resolution of 11 µs has been achieved for a Mueller matrix measurement. To ensure the accuracy and stability, a novel approach combining a fast Fourier transform algorithm and Bessel function expansion is proposed for the in-situ calibration of PEM. With the proposed calibration method, the peak retardance and static retardance of the PEM can be calibrated with high accuracy and sensitivity over an ultra large retardance variation range. Both static and dynamic measurement experiments have been carried out to show the high accuracy and stability of the developed MME, which can be expected to pave the way for in-situ and real-time monitoring for rapid reaction processes.
Collapse
|