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Zhu H, Xu C, Wang DW, Yakovlev VV, Zhang D. Enhanced Chemical Sensing with Multiorder Coherent Raman Scattering Spectroscopic Dephasing. Anal Chem 2022; 94:8409-8415. [PMID: 35623094 DOI: 10.1021/acs.analchem.2c01060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Molecular vibrational spectroscopy is widely used in various sensing and imaging applications, providing intrinsic information at the molecular level. Nonlinear optical interactions using ultrashort laser pulses facilitate the selective coherent excitation of molecular vibrational modes by focusing energy into specific molecular bonds, boosting the signal level for multiple orders of magnitude. The dephasing of such coherence, which is susceptible to the local molecular environment, however, is often neglected. The unique capability of vibrational dephasing dynamics to serve as a unique probe for complex molecular interactions and the effect of local nano- and microenvironments are beyond the reach of conventional, intensity-based spectroscopy. Here, we developed a novel multiorder coherent Raman spectroscopy platform with a special focus on the temporal evolution of molecular vibrational dephasing, termed as time-resolved coherent Raman scattering (T-CRS) spectroscopy. By utilizing a high dynamic range detection, molecular vibrational dynamics and the environmental effects are demonstrated with multidimensional spectroscopic sensing, which promises a new range of applications in biology, materials, and chemical sciences.
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Affiliation(s)
- Hanlin Zhu
- Interdisciplinary Center for Quantum Information, Zhejiang Province Key Laboratory of Quantum Technology and Device, and Department of Physics, Zhejiang University, Hangzhou, Zhejiang 310028 China
| | - Chenran Xu
- Interdisciplinary Center for Quantum Information, Zhejiang Province Key Laboratory of Quantum Technology and Device, and Department of Physics, Zhejiang University, Hangzhou, Zhejiang 310028 China
| | - Da-Wei Wang
- Interdisciplinary Center for Quantum Information, Zhejiang Province Key Laboratory of Quantum Technology and Device, and Department of Physics, Zhejiang University, Hangzhou, Zhejiang 310028 China
| | - Vladislav V Yakovlev
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843 United States.,Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843 United States.,Department of Electrical and Computer Engineering, Texas A&M University, College Station, Texas 77843 United States
| | - Delong Zhang
- Interdisciplinary Center for Quantum Information, Zhejiang Province Key Laboratory of Quantum Technology and Device, and Department of Physics, Zhejiang University, Hangzhou, Zhejiang 310028 China
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Petrov GI, Arora R, Yakovlev VV. Coherent anti-Stokes Raman scattering imaging of microcalcifications associated with breast cancer. Analyst 2021; 146:1253-1259. [PMID: 33332488 PMCID: PMC8019521 DOI: 10.1039/d0an01962c] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Chemical imaging of calcifications was demonstrated in the depth of a tissue. Using long wavelength excitation, broadband coherent anti-Stokes Raman scattering and hierarchical cluster analysis, imaging and chemical analysis were performed 2 mm below the skin level in a model system. Applications to breast cancer diagnostics and imaging are discussed together with the methods to further extend the depth and improve the spatial resolution of chemical imaging.
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Affiliation(s)
- Georgi I Petrov
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA.
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Yamilov AG, Sarma R, Yakovlev VV, Cao H. Coherent injection of light into an absorbing scattering medium with a microscopic pore. OPTICS LETTERS 2018; 43:2189-2192. [PMID: 29714786 DOI: 10.1364/ol.43.002189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 03/27/2018] [Indexed: 06/08/2023]
Abstract
We demonstrate that interplay between absorption and scattering in a dielectric medium with a microscopic pore gives rise to eigenchannels concentrated in the pore. Such a circumvention of attenuation leads to high transmission. By exciting such eigenchannels in a disordered nanophotonic system with a wavefront shaping technique, we experimentally confirm enhanced injection at depths exceeding the limiting length scales set by scattering, absorption, and diffraction.
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Thompson JV, Throckmorton GA, Hokr BH, Yakovlev VV. Wavefront shaping enhanced Raman scattering in a turbid medium. OPTICS LETTERS 2016; 41:1769-72. [PMID: 27082341 DOI: 10.1364/ol.41.001769] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Spontaneous Raman scattering is a powerful tool for chemical sensing and imaging but suffers from a weak signal. In this Letter, we present an application of adaptive optics to enhance the Raman scattering signal detected through a turbid, optically thick material. This technique utilizes recent advances in wavefront shaping techniques for focusing light through a turbid media and applies them to chemical detection to achieve a signal enhancement with little sacrifice to the overall simplicity of the experimental setup. With this technique, we demonstrate an enhancement in the Raman signal from titanium dioxide particles through a highly scattering material. This technique may pave the way to label-free tracking using the optical memory effect.
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Bykov A, Hautala T, Kinnunen M, Popov A, Karhula S, Saarakkala S, Nieminen MT, Tuchin V, Meglinski I. Imaging of subchondral bone by optical coherence tomography upon optical clearing of articular cartilage. JOURNAL OF BIOPHOTONICS 2016; 9:270-5. [PMID: 26097171 DOI: 10.1002/jbio.201500130] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 05/01/2015] [Accepted: 05/19/2015] [Indexed: 05/10/2023]
Abstract
Optical clearing is an effective method to reduce light scattering of biological tissues that provides significant enhancement of light penetration into the biological tissues making non-invasive diagnosis more feasible. In current report Optical Coherence Tomography (OCT) in conjunction with optical clearing is applied for assessment of deep cartilage layers and cartilage-bone interface. The solution of Iohexol in water has been used as an optical clearing agent. The cartilage-bone boundary becomes visible after 15 min of optical clearing that enabling non-invasive estimation of its roughness: Sa = 10 ± 1 µm. The results show that for 0.9 mm thick cartilage optical clearing is stopped after 50 min with an increase of refractive index from 1.386 ± 0.008 to 1.510 ± 0.009. Current approach enables more reliable detection of arthroscopically inaccessible regions, including cartilage-bone boundary and subchondral bone, and potentially improves accuracy of the osteoarthritis diagnosis.
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Affiliation(s)
- Alexander Bykov
- Optoelectronics and Measurement Techniques Laboratory, University of Oulu, P.O. Box 4500, 90014, Oulu, Finland.
- ITMO University, 49 Kronverksky pr., Saint-Petersburg, 197101, Russia.
- Interdisciplinary Laboratory of Biophotonics, Tomsk State University, Tomsk, 634050, Russia.
| | - Tapio Hautala
- Optoelectronics and Measurement Techniques Laboratory, University of Oulu, P.O. Box 4500, 90014, Oulu, Finland
| | - Matti Kinnunen
- Optoelectronics and Measurement Techniques Laboratory, University of Oulu, P.O. Box 4500, 90014, Oulu, Finland
| | - Alexey Popov
- Optoelectronics and Measurement Techniques Laboratory, University of Oulu, P.O. Box 4500, 90014, Oulu, Finland
- ITMO University, 49 Kronverksky pr., Saint-Petersburg, 197101, Russia
- Interdisciplinary Laboratory of Biophotonics, Tomsk State University, Tomsk, 634050, Russia
| | - Sakari Karhula
- Department of Medical Technology, Institute of Biomedicine, University of Oulu, P.O. Box 5000, 90014, Oulu, Finland
- Medical Research Center, University of Oulu and Oulu University Hospital, P.O. Box 50, 90029, Oulu, Finland
| | - Simo Saarakkala
- Department of Medical Technology, Institute of Biomedicine, University of Oulu, P.O. Box 5000, 90014, Oulu, Finland
- Medical Research Center, University of Oulu and Oulu University Hospital, P.O. Box 50, 90029, Oulu, Finland
- Department of Diagnostic Radiology, Oulu University Hospital, P.O. Box 50, 90029, Oulu, Finland
| | - Miika T Nieminen
- Medical Research Center, University of Oulu and Oulu University Hospital, P.O. Box 50, 90029, Oulu, Finland
- Department of Diagnostic Radiology, Oulu University Hospital, P.O. Box 50, 90029, Oulu, Finland
- Department of Radiology, University of Oulu, P.O. Box 5000, 90014, Oulu, Finland
| | - Valery Tuchin
- Optoelectronics and Measurement Techniques Laboratory, University of Oulu, P.O. Box 4500, 90014, Oulu, Finland
- Research-Educational Institute of Optics and Biophotonics, Saratov State University, 410012, Saratov, Russia
- Institute of Precise Mechanics and Control of Russian Academy of Sciences, Russian Academy of Sciences, 410028, Saratov, Russia
| | - Igor Meglinski
- Optoelectronics and Measurement Techniques Laboratory, University of Oulu, P.O. Box 4500, 90014, Oulu, Finland
- ITMO University, 49 Kronverksky pr., Saint-Petersburg, 197101, Russia
- Interdisciplinary Laboratory of Biophotonics, Tomsk State University, Tomsk, 634050, Russia
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Thompson J, Hokr B, Yakovlev V. Optimization of focusing through scattering media using the continuous sequential algorithm. JOURNAL OF MODERN OPTICS 2015; 63:80-84. [PMID: 27018179 PMCID: PMC4803298 DOI: 10.1080/09500340.2015.1073804] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The ability to control the propagation of light through scattering media is essential for atmospheric optics, astronomy, biomedical imaging and remote sensing. The optimization of focusing light through a scattering medium is of particular interest for the case of highly scattering materials. Optical wavefront beam-shaping plays a critical role in optimizing such a propagation; however, an enormous field of adjustable parameters makes the overall task complicated. Here, we propose and experimentally evaluate several variations on the standard continuous sequential algorithm that hold a promise of revealing new, faster and more efficient optimization algorithms for selecting an optical wavefront to focus light through a scattering medium. We demonstrate that the order in which pixels are chosen in the continuous sequential algorithm can lead to a 2-fold decrease in the number of iterations required to reach a given enhancement.
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Hokr BH, Bixler JN, Yakovlev VV. Higher order processes in random Raman lasing. APPLIED PHYSICS. A, MATERIALS SCIENCE & PROCESSING 2014; 117:681-685. [PMID: 25395737 PMCID: PMC4226537 DOI: 10.1007/s00339-014-8722-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Random Raman lasers offer a unique opportunity to study many exciting dynamics of light propagation in turbid media. One of the most notable features observed to exist in the recently discovered random Raman laser are the presence of higher order stimulated Raman scattering (SRS) processes. The higher order Stokes generation likely comes from photons that have the longest pathlengths, thus have the most gain. This makes these photons particularly likely to offer interesting insight into wave propagation effects such as coherent backscattering and optical Anderson localization. In this work, we use Monte Carlo simulations to investigate how these higher order processes occur and what properties they are expected to exhibit when considering only transport equation dynamics. This knowledge will allow us to look for deviations from this theory in future experiments to determine if wavelike properties play an active role in random Raman lasing.
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Bixler JN, Hokr BH, Denton ML, Noojin GD, Shingledecker AD, Beier HT, Thomas RJ, Rockwell BA, Yakovlev VV. Assessment of tissue heating under tunable near-infrared radiation. JOURNAL OF BIOMEDICAL OPTICS 2014; 19:070501. [PMID: 25006985 DOI: 10.1117/1.jbo.19.7.070501] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Accepted: 06/11/2014] [Indexed: 05/20/2023]
Abstract
The time-temperature effects of laser radiation exposure are investigated as a function of wavelength. Here, we report the thermal response of bulk tissue as a function of wavelength from 700 to 1064 nm. Additionally, Monte Carlo simulations were used to verify the thermal response measured and predict damage thresholds based on the response.
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Affiliation(s)
- Joel N Bixler
- Texas A&M University, Department of Biomedical Engineering, College Station, Texas 77843b711th Human Performance Wing, Human Effectiveness Directorate, Bioeffects Division, Optical Radiation Bioeffects Branch, JBSA Fort Sam Houston, Texas 78234
| | - Brett H Hokr
- Texas A&M University, Department of Biomedical Engineering, College Station, Texas 77843cTexas A&M University, Department of Physics and Astronomy, College Station, Texas 77843
| | | | | | | | - Hope T Beier
- 711th Human Performance Wing, Human Effectiveness Directorate, Bioeffects Division, Optical Radiation Bioeffects Branch, JBSA Fort Sam Houston, Texas 78234
| | - Robert J Thomas
- 711th Human Performance Wing, Human Effectiveness Directorate, Bioeffects Division, Optical Radiation Bioeffects Branch, JBSA Fort Sam Houston, Texas 78234
| | - Benjamin A Rockwell
- 711th Human Performance Wing, Human Effectiveness Directorate, Bioeffects Division, Optical Radiation Bioeffects Branch, JBSA Fort Sam Houston, Texas 78234
| | - Vladislav V Yakovlev
- Texas A&M University, Department of Biomedical Engineering, College Station, Texas 77843cTexas A&M University, Department of Physics and Astronomy, College Station, Texas 77843
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