(* indicates correspondence; † indicates equal contribution)
2025
40. C. Shi, N. Zhou, and R. Zhou*, “Reflection-mode optical diffraction tomography at 1.3 μm for deep tissue imaging,” Proc. SPIE 13383, Emerging Digital Micromirror Device Based Systems and Applications XVII, 133830A, San Francisco, CA, United States, 25 - 30 January 2025. [Link]
39. C. Shi, N. Zhou, and R. Zhou*, “Resolution enhancement of quantitative phase microscopy with vortex beam illumination,” Proc. SPIE 13329, Quantitative Phase Imaging XI, 133290M, San Francisco, CA, United States, 25 - 30 January 2025. [Link]
38. Y. Nie, Z. Zhang, R. Cai, Y. Zhou, R. Sun, Z. Li*, and R. Zhou*, “Quantitative assessment of chondrocyte response to inflammatory cytokines using interferometric quantitative phase microscopy,” Proc. SPIE 13329, Quantitative Phase Imaging XI, 133290K, San Francisco, CA, United States, 25 - 30 January 2025. [Link]
37. X. Li, N. Zhou, L. Duan, and R. Zhou*, “Label-free characterization of live migrasome using quantitative phase imaging,” Proc. SPIE 13329, Quantitative Phase Imaging XI, 133290C, San Francisco, CA, United States, 25 - 30 January 2025. [Link]
2023
36. H. Zhu*, Y. Sun, H. Wu, C. Kuang, and R. Zhou, “Optimal fitting strategy for modulated illumination localization microscopy,” Proc. SPIE 12435, Emerging Digital Micromirror Device Based Systems and Applications XV, 1243508, San Francisco, CA, United States, United States, 28 January - 3 February 2023. [Link]
35. N. Zhou and R. Zhou*, “Defining phase spatial resolution in quantitative phase imaging,” Proc. SPIE 12389, Quantitative Phase Imaging IX, 123890K, San Francisco, CA, United States, 28 January - 3 February 2023. [Link]
34. X. Jiang, N. Zhou, and R. Zhou*, “High-resolution label-free cell imaging with angular information encoded dynamic speckle illumination,” Proc. SPIE 12389, Quantitative Phase Imaging IX, 123890H, San Francisco, CA, United States, 28 January - 3 February 2023. [Link]
2022
33. G. Zhao and R. Zhou*, “Model-free computer-generated holography,” TECON 2022 - 2022 IEEE Region 10 Conference (TENCON), pp. 1-3, Hong Kong, China, 1 - 4 November 2022. [Link]
32. Y. Zhang, W. Luo, X. Shu, and R. Zhou*, “Learning phase retrieval without using real data,” TECON 2022 - 2022 IEEE Region 10 Conference (TENCON), pp. 1-3, Hong Kong, China, 1 - 4 November 2022. [Link]
31. N. Zhou, Y. Nie, and R. Zhou*, “Transmission Matrix-based Quantitative Phase Microscopy with High Sensitivity for Profiling 2D Materials,” TECON 2022 - 2022 IEEE Region 10 Conference (TENCON), pp. 1-3, Hong Kong, China, 1 - 4 November 2022. [Link]
30. A. Zheng, N. Zhou, and R. Zhou*, “Enhancing Resolution of Quantitative Phase Microscopy through Second-Harmonic Generation and Structured Illumination,” TECON 2022 - 2022 IEEE Region 10 Conference (TENCON), pp. 1-3, Hong Kong, China, 1 - 4 November 2022. [Link]
29. Q. Xiao, Y. He, M. H. Rahman, R. Zhou, and Y. P. Ho*, “A Label-Free Platform Combining Quantitate Phase Imaging and Microfluidics for the Measurement of Cellular Biophysical Properties,” 26th International Conference on Miniaturized Systems for Chemistry and Life Sciences (µTAS 2022), Hangzhou, Zhejiang, China, 23 - 27 October 2022. [Link]
28. G. Luo, R. Guo, R. Zhou, and T. Blu*, “Iterative Single-frame High-bandwidth Complex Wave Retrieval Algorithm,” Digital Holography and 3-D Imaging, Technical Digest Series (Optica Publishing Group, 2022), paper M5A.5, Cambridge, UK, 1 - 4 August 2022. [Link]
27. Y. He and R. Zhou*, “High-Speed Optical Diffraction Tomography for Cell Analysis and Additive Manufacturing Metrology,” Imaging and Applied Optics Congress, Technical Digest Series (Optica Publishing Group, 2022), paper 3Th5A.2, Vancouver, BC, Canada, 11 - 15 July 2022. [Link]
26. G. Luo, R. Guo, R. Zhou, and T. Blu*, “A Fast Robust Phase Restoration Algorithm,” Imaging and Applied Optics Congress, Technical Digest Series (Optica Publishing Group, 2022), paper CM2A.6, Vancouver, BC, Canada, 11 - 15 July 2022. [Link]
25. Y. Nie, N. Zhou, and R. Zhou*, “Quantitative Phase Microscopy with Ultra-high Sensitivity for Profiling Single-layer Materials,” 2022 Photonics North (PN), pp. 1-1, Niagara Falls, ON, Canada, 24 - 26 May 2022. [Link]
24. Y. Xu†, Y. He†, S. Wei, L. Duan*, and R. Zhou*, “Label-free imaging of live migrasome formation using optical diffraction tomography,” Proc. SPIE 11972, Label-free Biomedical Imaging and Sensing (LBIS) 2022, 119720C, San Francisco, CA, United States, 22 - 27 January 2022. [Link]
23. N. Zhou, A. Zheng, and R. Zhou*, “Fourfold resolution enhancement in quantitative phase microscopy through second harmonic generation and structured illumination,” Proc. SPIE 11970, Quantitative Phase Imaging VIII, 1197003, San Francisco, CA, United States, 22 - 27 January 2022. [Link]
22. M. Niu and R. Zhou*, “Compact and simultaneous three-wavelength quantitative phase microscopy for hemoglobin concentration quantification in red blood cells,” Proc. SPIE 11970, Quantitative Phase Imaging VIII, 119700I, San Francisco, CA, United States, 22 - 27 January 2022. [Link]
21. W. Luo, Y. Zhang, X. Shu, M. Niu, and R. Zhou*, “Learning end-to-end phase retrieval using only one interferogram with mixed-context network,” Proc. SPIE 11970, Quantitative Phase Imaging VIII, 119700A, San Francisco, CA, United States, 22 - 27 January 2022. [Link]
20. Y. Nie, X. Shu, and R. Zhou*, “Label-Free Analysis of E. coli Viability Using Quantitative Phase Imaging and Machine Learning,” Proc. SPIE 11970, Quantitative Phase Imaging VIII, 119700G, San Francisco, CA, United States, 22 - 27 January 2022. [Link]
19. X. Shu, Y. Zhang, M. Niu, W. Luo, and R. Zhou*, “Compact and ease-of-use quantitative phase microscopy for real-time live-cell imaging,” Proc. SPIE 11970, Quantitative Phase Imaging VIII, 1197004, San Francisco, CA, United States, 22 - 27 January 2022. [Link]
2021
18. N. K. Soni*, S. U. Alam, C. Kong, H. He, R. Zhou, and K. K. Y. Wong*, “Non-interferometric quantitative phase imaging at 1 μm wavelength regime,” 26th Optoelectronics and Communications Conference, OSA Technical Digest (Optica Publishing Group, 2021), paper W4E.3, Hong Kong, China, 3 - 7 July 2021. [Link]
17. R. Zhou*, “Single-shot Cell Tomography for 3D Image Cytometry Applications,” 26th Optoelectronics and Communications Conference, OSA Technical Digest (Optica Publishing Group, 2021), paper W3E.2, Hong Kong, China, 3 - 7 July 2021. [Link]
16. N. K. Soni*, S. U. Alam, R. Zhou, and K. K. Y. Wong*, “Phase sensitive two-photon microscopy,” Conference on Lasers and Electro-Optics, OSA Technical Digest (Optica Publishing Group, 2021), paper AW4N.5, Virtual Meeting, 21 - 25 June 2021. [Link]
15. B. Ge†, M. Deng†, Y. He†, Y. Wang, M. H. Rahman, Y. Ho, L. Duan, Z. Yaqoob, G. Barbastathis, P. T. C. So, and R. Zhou*, “Single-shot tomographic microscopy for fast 3D cellular imaging,” Biophotonics Congress 2021, OSA Technical Digest (Optica Publishing Group, 2021), paper NF2C.4, Virtual Meeting, 12 - 16 April 2021. [Link]
14. Y. Xiao, S. Wei, and R. Zhou*, “Digital micro-mirror device based laser-illumination Fourier ptychographic microscopy for high-speed and high-resolution Imaging,” Proc. SPIE 11698, Emerging Digital Micromirror Device Based Systems and Applications XIII, 116980D, San Francisco, CA, United States, 6 - 11 March 2021. [Link]
13. S. Wei, Y. Xiao, H. Sun and R. Zhou*, “A Single-shot synthetic aperture phase microscope,” Proc. SPIE 11698, Emerging Digital Micromirror Device Based Systems and Applications XIII, 116980B, San Francisco, CA, United States, 6 - 11 March 2021. [Link]
12. X. Shu, Z. Han, M. Niu, H. Chen*, and R. Zhou*, “Portable and wireless quantitative phase microscope,” Proc. SPIE 11653, Quantitative Phase Imaging VII, 116531L, San Francisco, CA, United States, 6 - 11 March 2021. [Link]
11. Y. He and R. Zhou*, “Investigation of imaging contrast in optical diffraction tomography for cell imaging,” Proc. SPIE 11653, Quantitative Phase Imaging VII, 116531H, San Francisco, CA, United States, 6 - 11 March 2021. [Link]
10. Y. Nie, N. Zhou, L. Tao, G. Zhou, N. Zhao, J. Xu, and R. Zhou*, “Transparent thin-film metrology with a high sensitivity transmission-mode quantitative phase microscope,” Proc. SPIE 11653, Quantitative Phase Imaging VII, 116531E, San Francisco, CA, United States, 6 - 11 March 2021. [Link]
2020
9. [Invited Paper] R. Zhou*, “Intelligent, high speed, high resolution, and tomographic phase microscopy,” Proc. SPIE 11521, Biomedical Imaging and Sensing Conference 2020, 115210C, Yokohama, Japan, 22 - 24 April 2020. [Link]
8. Y. Yao, X. Shu, and R. Zhou*, “Deep learning based Phase Retrieval in Quantitative Phase Microscopy,” Proc. SPIE 11351, Unconventional Optical Imaging II, 113510W, Online Only, 29 March - 2 April 2020. [Link]
7. S. Wei, Y. Xiao, and R. Zhou*, “A high throughput synthetic aperture phase microscope,” Proc. SPIE 11294, Emerging Digital Micromirror Device Based Systems and Applications XII, 1129403, San Francisco, CA, United States, 1 - 6 February 2020. [Link]
6. Y. He, Y. Wang, and R. Zhou*, “Digital micromirror device based angle-multiplexed optical diffraction tomography for high throughput 3D imaging of cells,” Proc. SPIE 11294, Emerging Digital Micromirror Device Based Systems and Applications XII, 1129402, San Francisco, CA, United States, 1 - 6 February 2020. [Link]
5. Y. Nie, Y. Wang, and R. Zhou*, “Development of high sensitivity quantitative phase microscopy for label-free imaging of nanoscale dynamics,” Proc. SPIE 11249, Quantitative Phase Imaging VI, 112491W, San Francisco, CA, United States, 1 - 6 February 2020. [Link]
2019
4. Y. He and R. Zhou*, “High-speed Optical Diffraction Tomography for High Throughput Cell Imaging Applications,” Biophotonics Congress, OSA Technical Digest (Optica Publishing Group, 2019), paper DM4B.4, Tucson, AZ, United States, 14 - 17 April 2019. [Link]
3. X. Shu†, S. Sansare†, D. Jin, K. Y. Tong, R. Pandey*, and R. Zhou*, “White Blood Cell Classification Using Quantitative Phase Microscopy Based Deep Learning,” Biophotonics Congress, OSA Technical Digest (Optica Publishing Group, 2019), paper DT3B.3, Tucson, AZ, United States, 14 - 17 April 2019. [Link]
2. C. Zheng and R. Zhou*, “Digital Micromirror Device-based High-speed and High-resolution Quantitative Phase Imaging,” Proc. SPIE 10932, Emerging Digital Micromirror Device Based Systems and Applications XI, 1093206, San Francisco, CA, United States, 2 - 7 February 2019. [Link]
2018
1. R. Zhou*, “DMD-based quantitative phase microscopy and optical diffraction tomography,” Proc. SPIE 10546, Emerging Digital Micromirror Device Based Systems and Applications X, 105460E, San Francisco, CA, United States, 27 January - 1 February 2018. [Link]
2015
20. R. Zhou, C. Edwards, C. Bryniarski, G. Popescu, and L. L. Goddard*, “9nm node wafer defect inspection using three-dimensional scanning, a 405nm diode laser, and a broadband source,” Proc. SPIE 9424, Metrology, Inspection, and Process Control for Microlithography XXIX, 942416, San Jose, CA, United States, 22 - 26 February 2015. [Link]
19. R. Zhou, C. Edwards, C. Bryniarski, M. F. Dallmann, G. Popescu, and L. L. Goddard*, “White-light interferometric microscopy for wafer defect inspection,” Proc. SPIE 9336, Quantitative Phase Imaging, 93362P, San Francisco, CA, United States, 7 - 12 February 2015. [Link]
18. R. Zhou, C. Edwards, G. Popescu, and L. L. Goddard*, “Semiconductor defect metrology using laser-based quantitative phase imaging,” Proc. SPIE 9336, Quantitative Phase Imaging, 93361I, San Francisco, CA, United States, 7 - 12 February 2015. [Link]
2014
17. R. Zhou, C. Edwards, G. Popescu, and L. L. Goddard*, “9nm Node Wafer Defect Inspection using Dark-field and 3D Scanning Optical Microscopy”, SRC-TECHCON Conference, Metrology and Characterization, paper/poster 31.3, Austin, TX, United States, 7 - 9 September 2014. [Paper not available to public]
16. G. Rajshekhar, B. Bhaduri, C. Edwards, R. Zhou, L. L. Goddard, and G. Popescu*, “Wide-field diffraction phase microscope for precision metrology,” Imaging and Applied Optics, OSA Technical Digest (online) (Optica Publishing Group, 2014), paper DTh1B.2, Seattle, WA, United States, 13 - 17 July 2014. [Link]
15. R. Zhou†, T. Kim†, L. L. Goddard, and G. Popescu*, “Inverse Scattering Solutions Using Holographic Data,” Imaging and Applied Optics, OSA Technical Digest (online) (Optica Publishing Group, 2014), paper DW5B.2, Seattle, WA, United States, 13 - 17 July 2014. [Link]
14. C. Edwards, K. Wang, B. G. Griffin, R. Zhou, B. Bhaduri, G. Popescu, and L. L. Goddard*, “Fabrication of Diffractive Optical Elements with Digital Projection Photochemical Etching,” CLEO: 2014, OSA Technical Digest (online) (Optica Publishing Group, 2014), paper SM1H.4, San Jose, CA, United States, 8 - 13 June 2014. [Link]
13. R. Zhou†, T. Kim† L. L. Goddard, and G. Popescu*, “Solving the scattering inverse problem in the wavevector space,” Biomedical Optics, OSA Technical Digest (online) (Optica Publishing Group, 2014), paper BS3A.77, Miami, FL, United States, 26 - 30 April 2014. [Link]
12. T. Kim†, R. Zhou†, L. L Goddard, and G. Popescu*, “White-light Diffraction Tomography (WDT) of Live Cells,” Biomedical Optics, OSA Technical Digest (online) (Optica Publishing Group, 2014), paper BM4B.6, Miami, FL, United States, 26 - 30 April 2014. [Link]
11. R. Zhou, C. Edwards, G. Popescu, and L. L. Goddard*, “9nm node wafer defect inspection using visible light,” Proc. SPIE 9050, Metrology, Inspection, and Process Control for Microlithography XXVIII; 905017, San Jose, CA, United States, 22 - 26 February 2014. [Link]
2013
10. R. Zhou, G. Popescu, and L. L. Goddard*, “Diffraction phase microscopy and image post-processing for 22 nm node wafer defect inspection,” SRC-TECHCON Conference, Metrology, paper 13.3, Austin, TX, United States, 9 - 10 September 2013. [Paper not available to public]
9. R. Zhou, G. Popescu, and L. L. Goddard*, “Finding defects in a 22 nm node wafer with visible light,” CLEO: 2013, OSA Technical Digest (online) (Optica Publishing Group, 2013), paper AF2J.2, San Jose, CA, United States, 8 - 13 June 2013. [Link]
8. R. Zhou, G. Popescu, and L. L. Goddard*, “22nm node wafer inspection using diffraction phase microscopy and image post-processing,” Proc. SPIE 8681, Metrology, Inspection, and Process Control for Microlithography XXVII, 86810G, San Jose, CA, United States, 24 - 28 February 2013. [Link]
2012
7. R. Zhou, C. Edwards, G. Popescu, and L. L. Goddard*, “Diffraction Phase Microscopy for Wafer Inspection,” IEEE Photonics Conference, pp. 644-645, Burlingame, CA, United States, 23 - 27 September 2012. [Link]
6. R. Zhou, S. McKeown, B. Griffin, B. Amnueypornsakul, H. Huang, S. Eckhoff, D. Wasserman, and L. L. Goddard*, “CO2 sensing with a 2005 nm thulium holmium co-doped fiber laser,” Imaging and Applied Optics Technical Papers, OSA Technical Digest (online) (Optica Publishing Group, 2012), paper STh2B.4, Monterey, CA, United States, 24 - 28 June 2012. [Link]
2011
5. W. Shi, N. Moor, R. Zhou, K. A. Yahyaei, D. T. Nguyen, Z. Yao, M. A. Stephen, A. Chavez-Pirsona*, and N. Peyghambariana, “Monolithic narrow linewidth pulsed fiber laser transmitters in the C- and L-band for coherent LIDAR applications,” 16th Coherent Laser Radar Conference 2011, Long Beach, CA, United States, 20 - 24 June 2011. [Link]
2010
4. R. Zhou, Q. Zhan, P. E. Powers, B. Ibarra-Escamilla, and J. W. Haus*, “Phase Locking Multiple Fibers by a Talbot Mirror Fiber Device,” Frontiers in Optics 2010/Laser Science XXVI, OSA Technical Digest (CD) (Optica Publishing Group, 2010), paper FThG8, Rochester, NY, United States, 24 - 28 October 2010. [Link]
3. [Invited paper] R. Zhou, Q. Zhan, P. E. Powers, B. Ibarra-Escamilla, and J. W. Haus*, “A multi-fiber laser using a phase-locking Talbot self-imaging effect,” Proc. SPIE 7839, 2nd Workshop on Specialty Optical Fibers and Their Applications (WSOF-2), 78390M, Oaxaca, Mexico, 13 - 15 October 2010. [Link]
2. R. Zhou, B. Ibarra-Escamilla, Q. Zhan, P. E. Powers, and J. W. Haus*, “Self-focusing in gain-guided optical fibers and pulse propagation characteristics,” Proc. SPIE 7582, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications IX, 75820R, San Francisco, CA, United States, 23 - 28 January 2010. [Link]
1. R. Zhou, B. Ibarra-Escamilla, J. W. Haus, P. E. Powers, and Q. Zhan*, “High power erbium doped fiber laser generating switchable radially and azimuthally polarized beams at 1.6 µm wavelength,” Proc. SPIE 7580, Fiber Lasers VII: Technology, Systems, and Applications, 75802Y, San Francisco, CA, United States, 23 - 28 January 2010. [Link]