• 01/05/2025 - Present:  Postdoctoral researcher in CREOL, The College of Optics and Photonics, University of Central Florida, USA, Supervisor: Yehuda Braiman.

• 01/10/2024 - 31/03/2025:  Postdoctoral researcher in Electrical Engineering and Electronics  Department, Kyoto Institute of Technology, Kyoto, Japan, Supervisor: Yasuhiro Awatsuji

• Laser:  Semiconductor diode laser array

• Light-matter interaction: Non-linear optics, Optical Solitons

• Structured Light Beams: Fundamentals, Generation, detection, and manipulation.

• Holography: Polarization Holography, Computer-Generated Holography, Data storage and Display.

• Organic Materials: azo-carbazole polymer.

Publication Related to Structured Light Beams

1. 1. Triple-Exposure Holographic Multiplexing for Tunable Vector-Vortex Beam Generation Using Different Reconstruction Effects in azo-Carbazole Polymer Films, Singh, S.K., Awatsuji, Y., Kinashi, K., Tsutsumi, N., Awatsuji, Y. and Jackin, B.J., Optics Letters, 50, 5610-5613 (2025).

   2. Tailoring arbitrary large vectorial structured light beam array utilizing the tensor theory of multiplexed polarization hologram, Singh, S.K., Kinashi, K., Tsutsumi, N., Sakai, and Jackin, B.J., Optics Express,2024 32(18), 31162-31178.

   3. Generation of arbitrary vector vortex beams on a higher-order Poincaré sphere using a double-exposure polarization-multiplexed hologram, Singh, S.K., Notte, S., Yamaguchi, R., Kinashi, K., Tsutsumi, N., Sakai, W., Awatsuji, Y., and Jackin, B.J., 2024. Optics Letters, 49 (4), pp.1053-1056. 

   4. Tricomi–Gauss beam and its propagation characteristics, Singh, S.K., Kinashi, K., Tsutsumi, N., Sakai, W. and Jackin, B.J., 2023, Optical and Quantum Electronics, 55 (4), p.352.

   5. Tailoring Large Asymmetric Laguerre–Gaussian Beam Array Using Computer-Generated Holography, Singh, S.K., Adachi, Y., Kinashi, K., Tsutsumi, N., Sakai, W. and Jackin, B.J., 2023, February, In Photonics (Vol. 10, No. 3, p. 247). 

   6. Generation of Ince–Gaussian beams using Azocarbazole polymer CGH, Singh, S.K., Haginaka, H., Jackin, B.J., Kinashi, K., Tsutsumi, N. and Sakai, W., 2022, Journal of Imaging, 8 (5), p.144. 

Publication Related to Polarization Holography

1. Highly efficient rewritable thin polarization holograms through paraxial recording in azo-carbazole copolymer-based composite films, Kinashi, K., Yamazaki, I., Singh, S. K., Tsutsumi, N., Sakai, W., & Jackin, B. J., 2025, Materials Advances, 6(7), 2269-2277. 

2. High-density polarization multiplexed holograms using azo-carbazole films for diverse applications, Singh, S.K., Kinashi, K., Tsutsumi, N., Sakai, W. and Jackin, B.J., 2024, Optics Express, 32(13), pp.22602-22614. 

3. Azo-carbazole copolymer-based composite films for rewritable vector holograms, Singh, S.K., Kinashi, K., Tsutsumi, N., Sakai, W. and Jackin, B.J., 2024, Optical Materials Express, 14(2), pp.277-292. 

4. Tailoring arbitrary large vectorial structured light beam array utilizing the tensor theory of multiplexed polarization hologram, Singh, S.K., Kinashi, K., Tsutsumi, N., Sakai, and Jackin, B.J., Optics Express,2024 32(18), 31162-31178.

5. Generation of arbitrary vector vortex beams on a higher-order Poincaré sphere using a double-exposure polarization-multiplexed hologram, Singh, S.K., Notte, S., Yamaguchi, R., Kinashi, K., Tsutsumi, N., Sakai, W., Awatsuji, Y., and Jackin, B.J., 2024. Optics Letters, 49(4), pp.1053-1056. 

6. Triple-Exposure Holographic Multiplexing for Tunable Vector-Vortex Beam Generation Using Different Reconstruction Effects in azo-Carbazole Polymer Films, Singh, S.K., Awatsuji, Y., Kinashi, K., Tsutsumi, N., Awatsuji, Y. and Jackin, B.J., Optics Letters, 50, 5610-5613 (2025).

Publication Related to Organic Materials: azo-carbazole polymer

1. Highly efficient rewritable thin polarization holograms through paraxial recording in azo-carbazole copolymer-based composite films, Kinashi, K., Yamazaki, I., Singh, S. K., Tsutsumi, N., Sakai, W., & Jackin, B. J., 2025, Materials Advances, 6(7), 2269-2277.

2. High-density polarization multiplexed holograms using azo-carbazole films for diverse applications, Singh, S.K., Kinashi, K., Tsutsumi, N., Sakai, W. and Jackin, B.J., 2024, Optics Express, 32(13), pp.22602-22614. 

3. Azo-carbazole copolymer-based composite films for rewritable vector holograms, Singh, S.K., Kinashi, K., Tsutsumi, N., Sakai, W. and Jackin, B.J., 2024, Optical Materials Express, 14(2), pp.277-292. 

1.  Generation of structured light beams on HOPS and HyPS using multiplexed holograms, S. K. Singh, K. Kinashi, N. Tsutsumi, W. Sakai, and B. J. Jackin, JSAP-Optica Joint Symposia 2024, Niigata Japan, 16–20 September 2024, In proceedings, pages = 16p_A37_4, publisher = Optica Publishing Group, ISBN: 978-4-86348-811-3.

2. Highly efficient polarization and angular multiplexed vector hologram, S. K. Singh, K. Kinashi, N. Tsutsumi, W. Sakai, and B. J. Jackin, Practical Holography XXXVIII: Displays, Materials, and Applications, SPIE, vol. 12910, 2024, pp. 83–89.

3. Azo-functionalized copolymer holograms for efficient generation of vector beams, B. J. Jackin, S. K. Singh, K. Kinashi, N. Tsutsumi, and W. Sakai,” in Complex Light and Optical Forces XVIII, SPIE, vol. 12901, 2024, pp. 60–62.

7. Poster Presentation:  International Conference on Advances in Optics and Photonics Instrumentation (XLVII OSI Symposium), Chandigarh, India, Generation of a vectorial structured light beam by multiplexing polarization hologram using azo-carbazole polymer film.

6. Oral Presentation: JSAP-OPTICA Joint Symposia, The 85th JSAP Autumn Meeting,2024, Toki Messe, Japan, Generation of structured light beams on HOPS and HyPS using multiplexed holograms.

5. Poster Presentation: Organic Photonic Materials and Devices XXVI, San Francisco, USA,2024, Azo-functionalized copolymer for high-quality vectorial holography.

4. Oral Presentation: Practical Holography XXXVIII: Displays, Materials, and Applications, San Francisco, USA,2024, Highly efficient polarization and angular Multiplexing vector holograms.

3. Oral Presentation: Optics and Photonics Japan, Hokkaido, Japan 2023, Azo-Copolymer Materials for vector holography and Polarization-Controlled Applications.

2. Oral Presentation: KIT-ASEAN joint symposium, Kyoto, Japan,2023, Azo-carbazole polymers for structured beam generation using holography.

1. Oral Presentation: Optics and Photonics Japan, Utsunomiya, Japan 2022, High-density vortex array generation using azo-carbazole CGH and digital hologram printing.

1. Selected for a Travel Grant of  $1000 and registration fee ($590) waiver to present paper "Highly efficient polarization and angular Multiplexing vector holograms" in Photonics West, San Francisco, USA by SPIE.

1. Optical Society of America (OSA)

2. SPIE. 

3. Optical Society of Japan 

4. Japan Society of Applied Physics 

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