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Hou CF, Tsui WA, Chou RJ, Hsu CH, Feria DN, Lin TY, Chen YF. Speckle-Free, Angle-Free, Cavity-Free White Laser with a High Color Rendering Index. ACS APPLIED MATERIALS & INTERFACES 2024; 16:11489-11496. [PMID: 38393972 PMCID: PMC10921373 DOI: 10.1021/acsami.3c17222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 02/03/2024] [Accepted: 02/08/2024] [Indexed: 02/25/2024]
Abstract
The freedom from efficiency droop motivates monochromatic lasers to progress in general lighting applications due to the demand for more efficient and sustainable light sources. Still, a white light based on monochromatic lasers with high lighting quality, such as a high color rendering ability, an angle-independent output, and a speckle-free illumination, has not yet been fabricated nor demonstrated. Random lasers, with the special mechanism caused by multiple scattering, the angle-free emission, and the uncomplicated fabrication processes, inspire us to investigate the feasibility of utilizing them in general lighting. In this work, a white random laser with a high color rendering index (CRI) value, regardless of pumping energy and observing direction, was performed and discussed. We also investigated the stability of white RL as its CIE chromaticity coordinates exhibit negligible differences with increasing pump energy density, retaining its high-CRI measurement. Also, it exhibits angle-independent emission while having a high color rendering ability. After passing through a scattering film, it generated no speckles compared to the conventional laser. We demonstrated the advances in white laser illumination, showing that a white random laser is promising to be applied for high-brightness illumination, biological-friendly lighting, accurate color selections, and medical sensing.
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Affiliation(s)
- Cheng-Fu Hou
- Department
of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - Wei-An Tsui
- Department
of Optoelectronics and Materials Technology, National Taiwan Ocean University, Keelung City 202301, Taiwan
| | - Rou-Jun Chou
- Department
of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - Chih-Hao Hsu
- Department
of Optoelectronics and Materials Technology, National Taiwan Ocean University, Keelung City 202301, Taiwan
| | - Denice N. Feria
- Department
of Optoelectronics and Materials Technology, National Taiwan Ocean University, Keelung City 202301, Taiwan
| | - Tai-Yuan Lin
- Department
of Optoelectronics and Materials Technology, National Taiwan Ocean University, Keelung City 202301, Taiwan
| | - Yang-Fang Chen
- Department
of Physics, National Taiwan University, Taipei 10617, Taiwan
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Yadav R, Pal S, Jana S, Roy S, Debnath K, Ray SK, Brundavanam MM, Bhaktha B N S. Synergy between plasmonic nanocavities and random lasing modes: a tool to dequench plasmon quenched fluorophore emission. Phys Chem Chem Phys 2023; 25:28336-28349. [PMID: 37840472 DOI: 10.1039/d3cp04151d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2023]
Abstract
Metal nanoparticles (NPs) can be employed to modify the emission level of a dye emitter by tailoring the spectral overlap of the optical gain and localized surface plasmon resonance (LSPR). In the case of plasmonic random lasers, tuning the spectral overlap by manipulating metal NPs changes the scattering properties of the system, which is crucial in random lasers (RLs). In order to overcome this drawback, the emitter gain spectrum across the LSPR is tuned by appropriately choosing various dye emitters. A system with Au nanoislands (NIs) randomly distributed on the surface of vertically aligned ZnO nanorods on a glass substrate coated with three different dye emitters has been employed to study the metal-gain interaction as a function of spectral overlap. It is observed that the photoluminescence is quenched in the presence of Au NIs for all the three dye emitters; however, the degree of quenching is found to be directly proportional to the extent of spectral overlap of the LSPR and the fluorophore emission spectrum, with the resonantly coupled systems exhibiting higher random lasing thresholds. However, a dequenching of the emission is observed under spectrally off-resonant conditions, leading to a lower threshold RL. The effect of tailoring of the metal-gain interaction on the coherent and incoherent intensity components of RL emission is studied to elucidate the contrasting results of photoluminescence and RL emission. As the optical gain shifts away from the LSPR peak, the RL emission is dominated by the coherent intensity. The speckle-like field distributions of the RL modes couple to the plasmonic nanocavities along with a reduced absorption loss for the off-resonant case, leading to an enhanced stimulated emission. Hence, a synergy between random laser modes, plasmonic nanocavities and optimum spectral overlap has been utilized as a tool to dequench the plasmon quenched fluorophore emission.
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Affiliation(s)
- Renu Yadav
- Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur-721302, India.
| | - Sourabh Pal
- Advanced Technology Development Centre, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Subhajit Jana
- Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur-721302, India.
| | - Shuvajit Roy
- Department of Electronics and Electrical Communication Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Kapil Debnath
- Department of Electronics and Electrical Communication Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Samit K Ray
- Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur-721302, India.
| | - Maruthi M Brundavanam
- Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur-721302, India.
| | - Shivakiran Bhaktha B N
- Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur-721302, India.
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Shih CT, Chao YC, Shen JL, Chen YF. Enhanced Förster resonance energy transfer on layered metal-dielectric hyperbolic metamaterials: an excellent platform for low-threshold laser action. OPTICS EXPRESS 2023; 31:12669-12679. [PMID: 37157422 DOI: 10.1364/oe.485954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Förster resonance energy transfer (FRET) is a well-known physical phenomenon, which has been widely used in a variety of fields, spanning from chemistry, and physics to optoelectronic devices. In this study, giant enhanced FRET for donor-acceptor CdSe/ZnS quantum dot (QD) pairs placed on top of Au/MoO3 multilayer hyperbolic metamaterials (HMMs) has been realized. An enhanced FRET transfer efficiency as high as 93% was achieved for the energy transfer from a blue-emitting QD to a red-emitting QD, greater than that of other QD-based FRET in previous studies. Experimental results show that the random laser action of the QD pairs is greatly increased on a hyperbolic metamaterial by the enhanced FRET effect. The lasing threshold with assistance of the FRET effect can be reduced by 33% for the mixed blue- and red-emitting as QDs compared to the pure red-emitting QDs. The underlying origins can be well understood based on the combination of several significant factors, including spectral overlap of donor emission and acceptor absorption, the formation of coherent closed loops due to multiple scatterings, an appropriate design of HMMs, and the enhanced FRET assisted by HMMs.
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Lin HI, Tan HY, Liao YM, Shen KC, Shalaginov MY, Kataria M, Chen CT, Chang JW, Chen YF. A Transferrable, Adaptable, Free-Standing, and Water-Resistant Hyperbolic Metamaterial. ACS APPLIED MATERIALS & INTERFACES 2021; 13:49224-49231. [PMID: 34609827 DOI: 10.1021/acsami.1c15481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Hyperbolic metamaterials (HMMs) have attracted significant attention due to the profound manipulation of the photonic density of states, resulting in the efficient optoelectronic devices with the enhanced light-matter interaction. HMMs are conventionally built on rigid large-size substrates with poor conformability and the absence of flexibility. Here, we demonstrate a grating collageable HMM (GCHMM), which is composed of eight alternating layers of Au and poly(methyl methacrylate) (PMMA) and PMMA grating nanostructure containing quantum dots (QDs). The QDs serve as a scattering gain medium performing a random laser action, and the grating nanostructure enhances the extraction of light from QDs. The GCHMM enhances laser action by 13 times, reduces lasing threshold by 46%, and increases differential quantum efficiency by 1.8 times as compared to a planar collageable HMM. In addition, the GCHMM can be retransferred multiple times to other substrates as well as provide sufficient protection in water and still retain an excellent performance. It also shows stable functionality even when transferred to a dental floss. The GCHMM, therefore, promises to become a versatile platform for foldable, adaptable, free-standing, and water-resistant optoelectronic device applications.
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Affiliation(s)
- Hung-I Lin
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - Hsiang-Yao Tan
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - Yu-Ming Liao
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - Kun-Ching Shen
- Advanced Remanufacturing and Technology Centre, The Agency for Science, Technology and Research, 637143 Singapore
| | - Mikhail Y Shalaginov
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Monika Kataria
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - Chih-Ting Chen
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - Jun-Wei Chang
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - Yang-Fang Chen
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
- Advanced Research Centre for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan
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Liang Y, Li C, Huang YZ, Zhang Q. Plasmonic Nanolasers in On-Chip Light Sources: Prospects and Challenges. ACS NANO 2020; 14:14375-14390. [PMID: 33119269 DOI: 10.1021/acsnano.0c07011] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The plasmonic nanolaser is a class of lasers with the physical dimensions free from the optical diffraction limit. In the past decade, progress in performance, applications, and mechanisms of plasmonic nanolasers has increased dramatically. We review this advance and offer our prospectives on the remaining challenges ahead, concentrating on the integration with nanochips. In particular, we focus on the qualifications for electrical pumping, energy consumption, and ultrafast modulation. At last, we evaluate the strategies for on-chip source construction design and further threshold reduction to achieve a long-term room-temperature electrically pumped plasmonic nanolaser, the ultimate goal toward practical applications.
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Affiliation(s)
- Yin Liang
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China
| | - Chun Li
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Yong-Zhen Huang
- State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
| | - Qing Zhang
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China
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Kataria M, Yadav K, Nain A, Lin HI, Hu HW, Paul Inbaraj CR, Chang TJ, Liao YM, Cheng HY, Lin KH, Chang HT, Tseng FG, Wang WH, Chen YF. Self-Sufficient and Highly Efficient Gold Sandwich Upconversion Nanocomposite Lasers for Stretchable and Bio-applications. ACS APPLIED MATERIALS & INTERFACES 2020; 12:19840-19854. [PMID: 32270675 DOI: 10.1021/acsami.0c02602] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Multifunctional lanthanide-doped upconversion nanoparticles (UCNPs) have spread their wings in the fields of flexible optoelectronics and biomedical applications. One of the ongoing challenges lies in achieving UCNP-based nanocomposites, which enable a continuous-wave (CW) laser action at ultralow thresholds. Here, gold sandwich UCNP nanocomposites [gold (Au1)-UCNP-gold (Au2)] capable of exhibiting lasing at ultralow thresholds under CW excitation are demonstrated. The metastable energy-level characteristics of lanthanides are advantageous for creating population inversion. In particular, localized surface plasmon resonance-based electromagnetic hotspots in the nanocomposites and the huge enhancement of scattering coefficient for the formation of coherent closed loops due to multiple scattering facilitate the process of stimulated emissions as confirmed by theoretical simulations. The nanocomposites are subjected to stretchable systems for enhancing the lasing action (threshold ∼ 0.06 kW cm-2) via a light-trapping effect. The applications in bioimaging of HeLa cells and antibacterial activity (photothermal therapy) are demonstrated using the newly designed Au1-UCNP-Au2 nanocomposites.
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Affiliation(s)
- Monika Kataria
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 115, Taiwan
- Department of Physics, National Central University, Chung-Li 320, Taiwan
- Molecular Science and Technology Program, Taiwan International Graduate Program, Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 115, Taiwan
- Department of Physics, National Taiwan University, Taipei 106, Taiwan
| | - Kanchan Yadav
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
- Nanoscience and Nanotechnology Program, Taiwan International Graduate Program, Institute of Physics, Academia Sinica, Taipei 106, Taiwan
| | - Amit Nain
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
- Nanoscience and Nanotechnology Program, Taiwan International Graduate Program, Institute of Physics, Academia Sinica, Taipei 106, Taiwan
- Department of Engineering and System Science, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Hung-I Lin
- Department of Physics, National Taiwan University, Taipei 106, Taiwan
| | - Han-Wen Hu
- Department of Physics, National Taiwan University, Taipei 106, Taiwan
| | - Christy Roshini Paul Inbaraj
- Department of Physics, National Taiwan University, Taipei 106, Taiwan
- Nanoscience and Nanotechnology Program, Taiwan International Graduate Program, Institute of Physics, Academia Sinica, Taipei 106, Taiwan
- Department of Engineering and System Science, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Ting-Jia Chang
- Department of Physics, National Taiwan University, Taipei 106, Taiwan
| | - Yu-Ming Liao
- Department of Physics, National Taiwan University, Taipei 106, Taiwan
| | - Hao-Yu Cheng
- Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
| | - Kung-Hsuan Lin
- Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
| | - Huan-Tsung Chang
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
- Department of Chemistry, Chung Yuan Christian University, Chungli District, Taoyuan City 32023, Taiwan
| | - Fan-Gang Tseng
- Department of Engineering and System Science, National Tsing Hua University, Hsinchu 300, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 300, Taiwan
- Division of Mechanics, Research Center for Applied Sciences, Academia Sinica, Nangang, Taipei 115, Taiwan
| | - Wei-Hua Wang
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 115, Taiwan
- Molecular Science and Technology Program, Taiwan International Graduate Program, Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 115, Taiwan
| | - Yang-Fang Chen
- Department of Physics, National Taiwan University, Taipei 106, Taiwan
- Advanced Research Centre for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan
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