Dr. Michael Shribak Profile

Dr. Michael Shribak

Associate Scientist at Marine Biological Lab

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Publications (21)

SPIE Journal Paper | 6 January 2017 Open Access

Mapping optical path length and image enhancement using quantitative orientation-independent differential interference contrast microscopy

Michael Shribak, Kieran Larkin, David Biggs

JBO, Vol. 22, Issue 01, 016006, (January 2017) https://doi.org/10.1117/12.10.1117/1.JBO.22.1.016006

KEYWORDS: Digital image correlation, Prisms, Microscopes, Image enhancement, Objectives, Microscopy, Biomedical optics, Deconvolution, Refractive index, Glasses

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Proceedings Article | 22 February 2013 Paper

Using liquid crystal variable retarders for fast modulation of bias and shear direction in quantitative differential interference contrast (DIC) microscope

Michael Shribak

Proceedings Volume 8589, 85891I (2013) https://doi.org/10.1117/12.2008243

KEYWORDS: Digital image correlation, Prisms, Liquid crystals, Microscopes, Polarization, Beam splitters, Phase shifts, Wave plates, Modulation, Calibration

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SPIE Journal Paper | 1 January 2008 Open Access

Orientation-independent differential interference contrast microscopy and its combination with an orientation-independent polarization system

Michael Shribak, James LaFountain, David Biggs, Shinya Inoue

JBO, Vol. 13, Issue 01, 014011, (January 2008) https://doi.org/10.1117/12.10.1117/1.2837406

KEYWORDS: Digital image correlation, Polarization, Microscopes, Microscopy, Ocean optics, Wave plates, Prisms, Phase contrast, Objectives, Image resolution

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Proceedings Article | 19 February 2007 Paper

Quantitative orientation-independent differential interference contrast (DIC) microscopy

Michael Shribak, James LaFountain, David Biggs, Shinya Inoué

Proceedings Volume 6441, 64411L (2007) https://doi.org/10.1117/12.709901

KEYWORDS: Digital image correlation, Microscopes, Polarization, Microscopy, Prisms, Objectives, Ocean optics, Image resolution, Phase contrast, Birefringence

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Proceedings Article | 10 September 2004 Paper

Mapping polymer birefringence in three-dimensions using a polarizing microscope with oblique illumination

Michael Shribak, Rudolf Oldenbourg

Proceedings Volume 5462, (2004) https://doi.org/10.1117/12.549050

KEYWORDS: Birefringence, Microscopes, Polarization, Wave plates, Ocean optics, Liquid crystals, Linear polarizers, Polarizers, Refractive index, Crystal optics

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We have been developing a polarized light microscope with liquid crystal universal compensator and circular polarizer (the LC-PolScope) for recording images, which are independent of the orientation of birefringent objects. Separate images show the retardance and the slow axis azimuth distributions of the in-plane birefringence of the focused region in the specimen. However the measured (apparent) retardance still depends on the angle between the crystal optic axis and the axis of the illuminating beam of light. If the illuminating beam is close to parallel to the optic axis the measured retardance value decreases dramatically and becomes zero when the two axes are parallel. The description of birefringent objects oriented in 3-dimensional space requires the introduction of two additional parameters: the principal retardance and the inclination angle. Together with the azimuth angle they completely characterize the birefringence properties of a specimen, assuming the specimen has a uniaxial optical indicatrix. We devised a new technique for measuring the three birefringence parameters without moving the specimen. For exploring the out-of-plane birefringence the new instrument which is based on the LC-PolScope technique contains an additional spatial light modulator, implemented here as a liquid crystal mask. The mask is located in the aperture plane of the condenser lens. Partial occlusion of the condenser aperture changes the direction of the central ray of the cone of light converging on the specimen. So we can obtain the retardance and azimuth images using different sets of illumination rays. For experimental verification we used a biological object called an aster. An aster consists of nearly parallel arrays of microtubules, a stiff biopolymer, radiating from a common organizing center called a centrosome. The object is spherically symmetric, and its 3 dimensional distribution of birefringence orientation can be predicted. Experimental results have shown the developed polarizing microscope can successfully be used for imaging and measuring three-dimensional orientation of birefringent objects

Proceedings Article | 25 September 2002 Paper

Sensitive measurements of two-dimensional birefringence distributions using near-circularly polarized beam

Michael Shribak, Rudolf Oldenbourg

Proceedings Volume 4819, (2002) https://doi.org/10.1117/12.463750

KEYWORDS: Wave plates, Polarization, Birefringence, Liquid crystals, Polarizers, Microscopes, Imaging systems, Time metrology, Linear polarizers, Sensors

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Proceedings Article | 15 May 2002 Paper

Scanning aperture polarized light microscope: observation of small calcite crystals using oblique illumination

Michael Shribak, Rudolf Oldenbourg

Proceedings Volume 4621, (2002) https://doi.org/10.1117/12.467840

KEYWORDS: Crystals, Microscopes, Calcite, Birefringence, Crystal optics, Liquid crystals, Polarization, Wave plates, Refractive index, Objectives

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SPIE Journal Paper | 1 May 2002

Polarization aberrations caused by differential transmission and phase shift in high numerical aperture lenses: theory, measurement, and retification

Michael Shribak, Shinya Inoue, Rudolf Oldenbourg

OE, Vol. 41, Issue 05, (May 2002) https://doi.org/10.1117/12.10.1117/1.1467669

KEYWORDS: Polarization, Lenses, Microscopes, Objectives, Refractive index, Phase shifts, Polarizers, Glasses, Optical testing, Mineralogy

Proceedings Article | 9 January 2002 Paper

Rectifiers for suppressing depolarization caused by differential transmission and phase shift in high NA lenses

Michael Shribak, Shinya Inoue, Rudolf Oldenbourg

Proceedings Volume 4481, (2002) https://doi.org/10.1117/12.452885

KEYWORDS: Polarization, Lenses, Microscopes, Refractive index, Birefringence, Glasses, Polarizers, Objectives, Phase shifts, Liquid crystals

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Proceedings Article | 9 January 2002 Paper

Fiber optic sensor for birefringence

Michael Shribak

Proceedings Volume 4481, (2002) https://doi.org/10.1117/12.452886

KEYWORDS: Sensors, Polarization, Beam splitters, Birefringence, Fiber optics sensors, Multimode fibers, Optical fiber cables, Optical fibers, Polarizers, Fiber optics

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Proceedings Article | 16 April 2001 Paper

3D imaging properties of a polarized light microscope revealed by birefringence measurements of small calcite crystals

Michael Shribak, Rudolf Oldenbourg

Proceedings Volume 4261, (2001) https://doi.org/10.1117/12.424522

KEYWORDS: Crystals, Calcite, Microscopes, Wave plates, Birefringence, Liquid crystals, Crystal optics, Superposition, Objectives, Polarization

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Proceedings Article | 14 June 2000 Paper

Phase-shifting method for two-dimensional birefringence measurement with return-path beams

Michael Shribak, Yukitoshi Otani, Toru Yoshizawa

Proceedings Volume 4148, (2000) https://doi.org/10.1117/12.388464

KEYWORDS: Birefringence, Polarization, Polarimetry, Phase shifts, CCD cameras, Laser beam diagnostics, Wave plates, Mirrors, Beam splitters, Cameras

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Proceedings Article | 25 October 1999 Paper

Return-path polarimeter for two-dimensional birefringence distribution measurement

Michael Shribak, Yukitoshi Otani, Toru Yoshizawa

Proceedings Volume 3754, (1999) https://doi.org/10.1117/12.366325

KEYWORDS: Birefringence, Wave plates, Beam splitters, Polarimetry, Polarization, CCD cameras, Calibration, Measurement devices, Phase measurement, Helium neon lasers

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Proceedings Article | 13 August 1998 Paper

Optical polarimetric temperature sensor

Michael Shribak

Proceedings Volume 3555, (1998) https://doi.org/10.1117/12.318208

KEYWORDS: Polarization, Temperature metrology, Polarimetry, Crystals, Beam splitters, Sensors, Phase shifts, Quartz, Laser crystals, Laser beam diagnostics

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Proceedings Article | 20 October 1997 Paper

Mechanical and optical properties of LCD elements: requirements and methods of control

Michael Shribak, Victor Kolpashchikov, Oleg Martynenko, A. Shnip

Proceedings Volume 3238, (1997) https://doi.org/10.1117/12.284798

KEYWORDS: LCDs, Optical properties, Optical components, Polarization, Optical testing, Phase shifts, Analytical research

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Proceedings Article | 1 April 1997 Paper

Compensation detector of birefringence

Michael Shribak, Victor Kolpashchikov

Proceedings Volume 3094, (1997) https://doi.org/10.1117/12.271803

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Proceedings Article | 24 September 1996 Paper

Fiber optic sensor of linear displacement

Michael Shribak, Victor Kolpashchikov, Oleg Martynenko

Proceedings Volume 2895, (1996) https://doi.org/10.1117/12.252151

KEYWORDS: Sensors, Mirrors, Beam splitters, Fiber optics sensors, Polarization, Liquids, Multimode fibers, Space mirrors, Mathematical modeling, Head

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Proceedings Article | 18 September 1996 Paper

Autocollimating detectors of birefringence

Michael Shribak

Proceedings Volume 2782, (1996) https://doi.org/10.1117/12.250815

KEYWORDS: Birefringence, Sensors, Measurement devices, Interferometry, Anisotropy, Optical recording, Solids, Crystals, Magnetism

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Proceedings Article | 1 September 1996 Paper

The polarization division of incident and reflected beams in optical disc systems

Michael Shribak

Proceedings Volume 2778, 27785D (1996) https://doi.org/10.1117/12.2299076

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Proceedings Article | 16 August 1996 Paper

Compensation detector of birefringence

Michael Shribak, Victor Kolpashchikov

Proceedings Volume 2873, (1996) https://doi.org/10.1117/12.246251

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Proceedings Article | 30 November 1994 Paper

Polarization methods for raising the level of an intelligence signal in fiber optical sensors using a single light guide

Victor Kolpashchikov, Oleg Martynenko, Michael Shribak

Proceedings Volume 2341, (1994) https://doi.org/10.1117/12.195552

KEYWORDS: Waveguides, Fiber optics sensors, Beam splitters, Sensors, Fiber optics, Polarization, Signals intelligence, Interferometry, Phase shifts, Photodiodes

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Showing 5 of 21 publications

Conference Committee Involvement (2)

Optomechatronic Actuators and Manipulation IV

17 November 2008 | San Diego, California, United States

Optomechatronic Actuators and Manipulation II

1 October 2006 | Boston, Massachusetts, United States

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