Prof. Rajpal S. Sirohi Profile

Prof. Rajpal S. Sirohi

Professor

SPIE Involvement:

Author | Editor

Publications (42)

SPIE Journal Paper | 30 April 2020 Open Access

Optical beam collimation procedures and collimation testing: a summary

Rajpal Sirohi

OE, Vol. 59, Issue 04, 040801, (April 2020) https://doi.org/10.1117/12.10.1117/1.OE.59.4.040801

KEYWORDS: Collimation, Interferometry, Interferometers, Mirrors, Prisms, Fringe analysis, Diffraction, Optical engineering, Composites, Spherical lenses

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SPIE Journal Paper | 16 August 2013

Lateral shear interferometer using multiplexed holographic lenses and spatial Fourier transform: varying spectrum position and phase fluctuations

Charles Joenathan, Ashley Bernal, Rajpal Sirohi

OE, Vol. 52, Issue 08, 084103, (August 2013) https://doi.org/10.1117/12.10.1117/1.OE.52.8.084103

KEYWORDS: Fourier transforms, Holography, Multiplexing, Interferometers, Holographic interferometry, Lenses, Wavefronts, Collimation, Monochromatic aberrations, Optical engineering

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Proceedings Article | 12 October 2006 Paper

An improved achromatic half-wave plate phase shifter for white light interferometry

Suja Helen Simson, Mahendra Prasad Kothiyal, Rajpal Singh Sirohi

Proceedings Volume 6382, 63820L (2006) https://doi.org/10.1117/12.685080

KEYWORDS: Phase shifts, Interferometers, Wave plates, Polarization, Circular polarizers, Optical interferometry, Jones calculus, Polarizers, Phase interferometry, Fringe analysis

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Proceedings Article | 7 March 2006 Paper

Polarization phase shifting in white-light interferometry

S. Suja Helen, Mahendra Kothiyal, Rajpal Sirohi

Proceedings Volume 4101, (2006) https://doi.org/10.1117/12.498448

KEYWORDS: Phase shifts, Ferroelectric materials, Polarization, Phase shifting, Optical interferometry, Phase interferometry, Interferometers, Beam splitters, Interferometry, Fourier transforms

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Proceedings Article | 7 March 2006 Paper

Compensation techniques in speckle interferometry

Rajpal Sirohi, Baij Gupta

Proceedings Volume 4101, (2006) https://doi.org/10.1117/12.498447

KEYWORDS: Speckle interferometry, Phase shifting, Polarization, Speckle, Photography, Nondestructive evaluation, Fringe analysis, Sensors, Liquids, Charge-coupled devices

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Proceedings Article | 30 May 2003 Paper

Speckle shear photography using photorefractive crystals for in-plane strain measurement

Mohammad Majles Ara, Rajpal Sirohi

Proceedings Volume 5144, (2003) https://doi.org/10.1117/12.499609

KEYWORDS: Crystals, Speckle, Photography, Laser crystals, Speckle pattern, Crystallography, Fringe analysis, Refractive index, Semiconductor lasers, Image processing

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Proceedings Article | 30 August 2002 Paper

Volume holographic lenses and their applications in white light imaging and concentration of solar energy

Chandra Shakher, Rajpal Sirohi

Proceedings Volume 4924, (2002) https://doi.org/10.1117/12.481507

KEYWORDS: Holograms, Holography, Lenses, Diffraction, Solar cells, Volume holography, Solar energy, Modulation, Refractive index, Photovoltaics

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Proceedings Article | 23 January 2002 Paper

Volume hologram recording with an applied electric field and a moving grating in photorefractive crystals

Mohammad Majles Ara, M. Talebi, C. Vijayan, Rajpal Sirohi

Proceedings Volume 4459, (2002) https://doi.org/10.1117/12.454006

KEYWORDS: Crystals, Gallium arsenide, Electro optics, Holograms, Silver, Holography, Volume holography, Modulation, Energy transfer, Spatial frequencies

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SPIE Press Book | 13 November 2001

Selected Papers on Holographic Interferometry: Applications

Proceedings Article | 25 September 2001 Paper

Figure-of-merit parameter of photorefractive crystals

Mohammad Majles Ara, C. Vijayan, Rajpal Sirohi

Proceedings Volume 4417, (2001) https://doi.org/10.1117/12.441336

KEYWORDS: Crystals, Ferroelectric materials, Refractive index, Gallium arsenide, Semiconductors, Silver, Electro optical modeling, Electro optics, Crystallography, Diffusion

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SPIE Journal Paper | 1 July 2001

Analysis of spectrally resolved white light interferograms: use of phase shifting technique

S. Suja Helen, Mahendra Kothiyal, Rajpal Sirohi

OE, Vol. 40, Issue 07, (July 2001) https://doi.org/10.1117/12.10.1117/1.1383997

KEYWORDS: Phase shifts, Phase shifting, Ferroelectric materials, Interferometers, Optical interferometry, Phase interferometry, Polarization, Spectroscopy, Calibration, Light sources

SPIE Journal Paper | 1 August 2000

Eosin dye soaked gelatin as a recording medium

D. Mangaiyarkarasi, P. Palanisamy, Rajpal Sirohi

OE, Vol. 39, Issue 08, (August 2000) https://doi.org/10.1117/12.10.1117/1.1305281

KEYWORDS: Diffraction, Diffraction gratings, Absorption, Holography, Modulation, Molecules, Physics, Nd:YAG lasers, Helium neon lasers, Polymers

SPIE Journal Paper | 1 February 2000

Parametric study of photorefractive beam coupling in BaTiO3 at multiple wavelengths

Mohammad Majles Ara, C. Vijayan, Nandigana Krishna Mohan, Rajpal Sirohi

OE, Vol. 39, Issue 02, (February 2000) https://doi.org/10.1117/12.10.1117/1.602392

KEYWORDS: Crystals, Laser crystals, Absorption, Spatial frequencies, Refractive index, Semiconductor lasers, Image processing, Crystallography, Electro optical modeling, Iron

Proceedings Article | 11 November 1999 Paper

Spectrally resolved white-light interferometry for profilometry with polarization phase shifter

S. Suja Helen, Mahendra Kothiyal, Rajpal Sirohi

Proceedings Volume 3897, (1999) https://doi.org/10.1117/12.369373

KEYWORDS: Phase shifts, Polarization, Interferometers, Phase shifting, Spectroscopy, Optical interferometry, Phase interferometry, Interferometry, Chromium, Profiling

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Proceedings Article | 20 September 1999 Paper

Real-time speckle shear photography using BaTiO3 for in-plane strain and displacement measurements at multiple wavelengths

Mohammad Majles Ara, C. Vijayan, Nandigana Krishna Mohan, Rajpal Sirohi

Proceedings Volume 3801, (1999) https://doi.org/10.1117/12.363934

KEYWORDS: Crystals, Speckle, Photography, Laser crystals, Moire patterns, Ferroelectric materials, Speckle pattern, Fringe analysis, Image processing, Nd:YAG lasers

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SPIE Journal Paper | 1 September 1999

Nondestructive assessment of thinning of plates using digital shearography

Rajpal Sirohi, Cho Tay, Huai Shang, W. Boo

OE, Vol. 38, Issue 09, (September 1999) https://doi.org/10.1117/12.10.1117/1.602210

KEYWORDS: Nondestructive evaluation, Shearography, Interferometry, Charge-coupled devices, Fringe analysis, Phase shifts, Aluminum, Optical engineering, Defect detection, Speckle metrology

Proceedings Article | 19 July 1999 Paper

Collimation testing techniques: a review

Rajpal Sirohi

Proceedings Volume 3749, (1999) https://doi.org/10.1117/12.354754

KEYWORDS: Collimation, Interferometry, Interferometers, Phase conjugation, Wavefronts, Mirrors, Collimators, Michelson interferometers, Diffraction gratings, Imaging systems

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Proceedings Article | 29 April 1999 Paper

Experimental characterization of photorefractive beam coupling in BaTiO3 crystal at multiple wavelengths

Mohammad Majles Ara, C. Vijayan, Nandigana Krishna Mohan, Mahendra Kothiyal, Rajpal Sirohi

Proceedings Volume 3729, (1999) https://doi.org/10.1117/12.346779

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Proceedings Article | 29 April 1999 Paper

Engineering applications of speckle phenomenon

Rajpal Sirohi

Proceedings Volume 3729, (1999) https://doi.org/10.1117/12.346807

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SPIE Journal Paper | 1 November 1998

Phase step calibration and phase measurement in image plane holography using BaTiO3 crystal as a recording medium

S. Suja Helen, Mohammad Majles Ara, J. Darlin, Nandigana Krishna Mohan, Mahendra Kothiyal, Rajpal Sirohi

OE, Vol. 37, Issue 11, (November 1998) https://doi.org/10.1117/12.10.1117/1.601879

KEYWORDS: Crystals, Calibration, Fringe analysis, Phase measurement, Phase shifts, Laser crystals, Holography, Ferroelectric materials, Visualization, Diffraction gratings

Proceedings Article | 29 September 1998 Paper

Optical strain gauge

Rajpal Sirohi, Fook Chau, Siew-Lok Toh, Elgin Quek

Proceedings Volume 3407, (1998) https://doi.org/10.1117/12.323334

KEYWORDS: Speckle, Photodetectors, Velocity measurements, Polarization, Solids, Diffraction, Wave propagation, Beam propagation method, Light scattering, Doppler effect

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Proceedings Article | 29 September 1998 Paper

Shear ESPI with small objects

Rajpal Sirohi, Cho Tay, Huai Shang, W. Boo

Proceedings Volume 3407, (1998) https://doi.org/10.1117/12.323336

KEYWORDS: Fringe analysis, Nondestructive evaluation, Shearography, Beam splitters, Phase shifting, Michelson interferometers, Remote sensing, Speckle, Interferometry, Photographic lenses

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Proceedings Article | 30 June 1998 Paper

Versatile electronic speckle pattern interferometry

Rajpal Sirohi

Proceedings Volume 3478, (1998) https://doi.org/10.1117/12.312964

KEYWORDS: Speckle pattern, Fringe analysis, Interferometry, Speckle interferometry, Electronic components, Speckle, Glasses, Cameras, Modulation, CCD cameras

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SPIE Journal Paper | 1 May 1998

Hybrid wedge plate-grating interferometer for collimation testing

J. Darlin, Mahendra Kothiyal, Rajpal Sirohi

OE, Vol. 37, Issue 05, (May 1998) https://doi.org/10.1117/12.10.1117/1.601672

KEYWORDS: Collimation, Interferometers, Interferometry, Fringe analysis, Spatial frequencies, Wavefronts, Optical engineering, Shearing interferometers, Ronchi rulings, Optical design

SPIE Press Book | 25 February 1998

Selected Papers on Holographic Interferometry: Principles and Techniques

Proceedings Article | 20 March 1997 Paper

Nondestructive evaluation of fiber-reinforced polymer composites by an all-fiber-optic phase-shifting electronic speckle pattern interferometer

Vadakke Murukeshan, A. Ganesan, Rajpal Sirohi, Sant Malhotra

Proceedings Volume 2921, (1997) https://doi.org/10.1117/12.269800

KEYWORDS: Nondestructive evaluation, Fiber reinforced polymers, Fiber optics, Phase shifting, Speckle pattern, Composites, Fringe analysis, Interferometers, Glasses, Modulators

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SPIE Press Book | 13 December 1996

Selected Papers on Electronic Speckle Pattern Interferometry: Principles and Practice

Proceedings Article | 19 July 1996 Paper

New simple ESPI configurations for deformation studies on large structures based on diffused reference beam

T. Santhanakrishnan, Nandigana Krishna Mohan, Rajpal Sirohi

Proceedings Volume 2861, (1996) https://doi.org/10.1117/12.245174

KEYWORDS: Diffusers, Speckle pattern, CCD cameras, Interferometers, Cameras, Mirrors, Video, Image processing, Interferometry, Holography

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Proceedings Article | 17 July 1996 Paper

Double shear speckle interferometry for curvature measurement

A. Ganesan, Vadakke Murukeshan, Peter Meinlschmidt, Rajpal Sirohi

Proceedings Volume 2860, (1996) https://doi.org/10.1117/12.276305

KEYWORDS: Interferometers, Mirrors, Speckle, Moire patterns, Photography, Fringe analysis, Modulation, Speckle interferometry, Physics, Interferometry

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Proceedings Article | 8 May 1995 Paper

Use of optical fiber strain sensor for damage detection in composite structures

Prafulla Masalkar, Sant Malhotra, Rajpal Sirohi, Anand Asundi

Proceedings Volume 2443, (1995) https://doi.org/10.1117/12.208260

KEYWORDS: Composites, Polarization, Optical fibers, Birefringence, Sensors, Damage detection, Beam splitters, Fiber optics sensors, Epoxies, Single mode fibers

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Proceedings Article | 12 December 1994 Paper

Deformation studies with BaTiO3 Crystal as a recording medium

P. Sreedhar, Nandigana Krishna Mohan, Rajpal Sirohi

Proceedings Volume 2340, (1994) https://doi.org/10.1117/12.195939

KEYWORDS: Crystals, Ferroelectric materials, Fringe analysis, Laser crystals, Holography, Crystallography, Speckle, Photography, Interferometry, Collimation

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Proceedings Article | 12 December 1994 Paper

Improved collimation testing with a multiple beam wedge plate lateral shear interferometer

P. Senthikumaran, K. Sriram, Mahendra Kothiyal, Rajpal Sirohi

Proceedings Volume 2340, (1994) https://doi.org/10.1117/12.195929

KEYWORDS: Collimation, Interferometers, Wavefronts, Beam splitters, Visibility, Fringe analysis, Mirrors, Shearing interferometers, Refractive index, Spherical lenses

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SPIE Press Book | 27 October 1994

Selected Papers on Single-Mode Optical Fibers: Characteristics and Applications of Standard and Highly Birefringent Fibers

SPIE Journal Paper | 1 June 1994

Real-time speckle photography with two-wave mixing in photorefractive BaTi03 crystals

P. Sreedhar, Nandigana Krishna Mohan, Rajpal Sirohi

OE, Vol. 33, Issue 06, (June 1994) https://doi.org/10.1117/12.10.1117/12.168865

KEYWORDS: Crystals, Speckle, Photography, Laser crystals, Ferroelectric materials, Fringe analysis, Phase shifts, Optical filters, Modulation, Sensors

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SPIE Journal Paper | 1 June 1994 Open Access

Guest Editorial: Optical Science and Engineering in India

Rajpal Sirohi

OE, Vol. 33, Issue 06, (June 1994) https://doi.org/10.1117/12.10.1117/12.181783

KEYWORDS: Optics, Optical engineering, Physics, Radio optics, Optical metrology, Crystal optics, Glasses, Holography, Laser applications, Nonlinear optics

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SPIE Journal Paper | 1 June 1994

Separation of the influence of in-plane displacement in multiaperture speckle shear interferometry

Nandigana Krishna Mohan, Prafulla Masalkar, Vadakke Murukeshan, Rajpal Sirohi

OE, Vol. 33, Issue 06, (June 1994) https://doi.org/10.1117/12.10.1117/12.167154

KEYWORDS: Speckle, Fringe analysis, Interferometry, Diffraction, Interferometers, Imaging systems, Photography, Moire patterns, Speckle pattern, Collimation

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Proceedings Article | 28 May 1993 Paper

Electronic speckle pattern interferometry with holo-optical element

Nandigana Krishna Mohan, Prafulla Masalkar, Rajpal Sirohi

Proceedings Volume 1821, (1993) https://doi.org/10.1117/12.145541

KEYWORDS: Speckle pattern, Interferometry

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Proceedings Article | 6 April 1993 Paper

Design and fabrication of single-mode waveguides in glass by inverse ion exchange

Prafulla Masalkar, Vuyyuru Venkateswara Rao, Rajpal Sirohi

Proceedings Volume 1794, (1993) https://doi.org/10.1117/12.141894

KEYWORDS: Waveguides, Glasses, Refractive index, Diffusion, Wave propagation, Planar waveguides, Integrated optics, Photonic integrated circuits, Ions, Single mode fibers

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SPIE Journal Paper | 1 January 1993

Self-referencing collimation testing techniques

K. Sriram, Mahendra Kothiyal, Rajpal Sirohi

OE, Vol. 32, Issue 01, (January 1993) https://doi.org/10.1117/12.10.1117/12.60081

KEYWORDS: Collimation, Fringe analysis, Moire patterns, Interferometry, Diffraction gratings, Shearing interferometers, Optical testing, Polishing, Physics, Laser interferometry

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Proceedings Article | 16 December 1992 Paper

Fabrication of singlemode waveguide devices by inverse ion-exchange in glass

Prafulla Masalkar, Rajpal Sirohi, Vuyyuru Venkateswara Rao

Proceedings Volume 1622, (1992) https://doi.org/10.1117/12.636966

KEYWORDS: Waveguides, Glasses, Refractive index, Ions, Diffusion, Photomasks, Silver, Process modeling, Channel waveguides, Planar waveguides

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SPIE Press Book | 1 August 1991

Selected Papers on Speckle Metrology

Proceedings Article | 1 January 1991 Paper

Focal length measurement using diffraction at a grating

Rajpal Sirohi, Harish Kumar, Narinder Jain

Proceedings Volume 1332, (1991) https://doi.org/10.1117/12.51050

KEYWORDS: Diffraction, Diffraction gratings, Collimation, Optical testing, Optical inspection, Transmittance, Microscopes, Eye, Distance measurement, Spherical lenses

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Showing 5 of 42 publications

Conference Committee Involvement (3)

Optical Measurement Systems for Industrial Inspection IV

13 June 2005 | Munich, Germany

Optical Metrology in Production Engineering

27 April 2004 | Strasbourg, France

Microsystems Engineering: Metrology and Inspection III

23 June 2003 | Munich, Germany

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