Dr. Hongwu Ren Profile

Dr. Hongwu Ren

Principal Engineer at Alcon

Area of Expertise:

Photonics

Publications (16)

Proceedings Article | 12 February 2008 Paper

A video rate laser scanning confocal microscope

Hongwu Ren, Hongzhou Ma, James Jiang, Alex Cable

Proceedings Volume 6861, 68610D (2008) https://doi.org/10.1117/12.761709

KEYWORDS: Confocal microscopy, Scanners, Video, Laser scanners, Luminescence, Objectives, Imaging systems, Mirrors, Microscopes, Collimators

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SPIE Journal Paper | 1 September 2004 Open Access

Accurate measurement of blood vessel depth in port wine stained human skin in vivo using pulsed photothermal radiometry

Bincheng Li, Boris Majaron, John Viator, Thomas Milner, Zhongping Chen, Yonghua Zhao, Hongwu Ren, John Nelson

JBO, Vol. 9, Issue 05, (September 2004) https://doi.org/10.1117/12.10.1117/1.1784470

KEYWORDS: Blood vessels, Skin, Reconstruction algorithms, Radiometry, Temperature metrology, In vivo imaging, Pulsed laser operation, Blood, Solids, Medical laser equipment

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Proceedings Article | 1 July 2004 Paper

Determination of burn depth by phase-resolved polarization-sensitive optical coherence tomography

Ronald Walton, Woonggyu Jung, Zhongping Chen, J. Stuart Nelson, Hongwu Ren, Jun Zhang, Zhihua Ding

Proceedings Volume 5316, (2004) https://doi.org/10.1117/12.529874

KEYWORDS: Polarization, Birefringence, Optical coherence tomography, Skin, Tissue optics, Tissues, In vivo imaging, Modulators, Signal analyzers, Signal processing

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Proceedings Article | 8 July 2003 Paper

Power optical Doppler tomography imaging of blood vessel in human skin and M-mode Doppler imaging of blood flow in chick chrioallantoic membrane

Zhongping Chen, Yimin Wang, J. Stuart Nelson, Hongwu Ren

Proceedings Volume 4956, (2003) https://doi.org/10.1117/12.479028

KEYWORDS: Doppler tomography, Blood circulation, Skin, Optical coherence tomography, Tissue optics, Optical imaging, Blood vessels, Coherence (optics), Biomedical optics, Tomography

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Proceedings Article | 8 July 2003 Paper

Phase-resolved polarization sensitive optical coherence tomography imaging of tendon and muscle

J. Stuart Nelson, Hongwu Ren, Yimin Wang, Zhongping Chen, Zhihua Ding, Yonghua Zhao

Proceedings Volume 4956, (2003) https://doi.org/10.1117/12.478965

KEYWORDS: Polarization, Optical coherence tomography, Coherence imaging, Birefringence, Optical imaging, Coherence (optics), Biomedical optics, Signal processing, Fringe analysis, Signal analyzers

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Proceedings Article | 8 July 2003 Paper

Ultrahigh-resolution optical coherent tomography using continuum generation from a photonic crystal fiber

J. Stuart Nelson, Yonghua Zhao, Hongwu Ren, Yimin Wang, Zhongping Chen

Proceedings Volume 4956, (2003) https://doi.org/10.1117/12.478972

KEYWORDS: Optical coherence tomography, Tissue optics, Tomography, Photonic crystal fibers, Coherence (optics), Imaging systems, Biomedical optics, Lithium, Optical resolution, Light

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Proceedings Article | 14 June 2002 Paper

High-resolution OCT using continuum generation from a photonic crystal fiber

J. Stuart Nelson, Yonghua Zhao, Zhihua Ding, Yimin Wang, Hongwu Ren, Zhongping Chen

Proceedings Volume 4619, (2002) https://doi.org/10.1117/12.470491

KEYWORDS: Optical coherence tomography, Light sources, Image resolution, Crystals, Tissues, Photonic crystal fibers, In vivo imaging, Sapphire lasers, Optical filters, Coherence (optics)

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Proceedings Article | 14 June 2002 Paper

Axicon lens for high-resolution optical coherence tomography over a long focus depth

J. Stuart Nelson, Zhihua Ding, Zhongping Chen, Yonghua Zhao, Hongwu Ren

Proceedings Volume 4619, (2002) https://doi.org/10.1117/12.470468

KEYWORDS: Axicons, Optical coherence tomography, Reflectivity, Interferometers, Signal detection, Coherence (optics), Optical components, Light sources, Mirrors, Image resolution

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Proceedings Article | 14 June 2002 Paper

Real-time phase resolved optical coherence tomography and optical Doppler tomography using optical Hilbert Transformation

Yonghua Zhao, Jianjun Miao, Zhihua Ding, Zhongping Chen, Woong Jung, Hongwu Ren, J. Stuart Nelson

Proceedings Volume 4619, (2002) https://doi.org/10.1117/12.470472

KEYWORDS: Doppler tomography, Optical coherence tomography, Blood circulation, Polarization, Tissue optics, Biomedical optics, Interferometers, Doppler effect, Scanners, In vivo imaging

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Proceedings Article | 14 June 2002 Paper

Imaging transverse flow velocity using spectral bandwidth of the Doppler frequency shift in phase-resolved ODT

Kjell Brecke, Hongwu Ren, Yonghua Zhao, Zhihua Ding, Zhongping Chen, J. Stuart Nelson

Proceedings Volume 4619, (2002) https://doi.org/10.1117/12.491304

KEYWORDS: Doppler effect, Doppler tomography, Geometrical optics, Velocity measurements, Signal detection, Biomedical optics, Particles, Phase shifts, Spatial resolution, Capillaries

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Proceedings Article | 23 May 2001 Paper

High-resolution optical coherence tomography using self-adaptive FFT and array detection

Shaohua Xiang, Zhongping Chen, Robert Windeler, Hongwu Ren, Jinendra Ranka, Yonghua Zhao, J. Stuart Nelson, Andrew Stentz, Zhihua Ding

Proceedings Volume 4251, (2001) https://doi.org/10.1117/12.427904

KEYWORDS: Optical coherence tomography, Algorithm development, Detector arrays, Speckle, Light sources, Sensors, Tissue optics, Tissues, Objectives, Biomedical optics

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Proceedings Article | 9 May 2000 Paper

Measurements of refractive index and physical thickness using optical coherence tomography

Guiju Song, Weizai Zhang, Hongwu Ren, Xiangzhao Wang, Lianying Zhang, Zujie Fang

Proceedings Volume 4077, (2000) https://doi.org/10.1117/12.385563

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Proceedings Article | 17 September 1999 Paper

Subsurface object imaging in turbid media using optical coherence tomography

Guiju Song, Zujie Fang, Hongwu Ren, Weizai Zhang, Lianying Zhang

Proceedings Volume 3863, (1999) https://doi.org/10.1117/12.364394

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Proceedings Article | 7 August 1998 Paper

Lattice random walk modeling of photon migration in turbid media

Hongwu Ren, Zujie Fang

Proceedings Volume 3548, (1998) https://doi.org/10.1117/12.317859

KEYWORDS: Scattering, 3D modeling, Absorption, Photon transport, Monte Carlo methods, Diffusion, Biomedical optics, Light scattering, Multiple scattering, Tissue optics

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