Prof. Angarai R. Ganesan Profile

Prof. Angarai R. Ganesan

Professor at Indian Institute of Technology Madras

SPIE Involvement:

Author | Student Chapter Advisor

Publications (16)

Proceedings Article | 7 October 2024 Presentation + Paper

Implementation of reference-less wavefront sensing in a grating array-based wavefront sensor

Biswajit Pathak, Jaspal Singh, C. Narayanamurthy, A. Ganesan

Proceedings Volume 13149, 131491J (2024) https://doi.org/10.1117/12.3027666

KEYWORDS: Optical gratings, Wavefronts, Wavefront sensors, Wavefront aberrations, Point spread functions, Wavefront reconstruction, Diffraction gratings, Lens arrays, Turbulence, Reconstruction algorithms

Read Abstract +

SPIE Journal Paper | 31 May 2022

Shack–Hartmann wavefront sensor with enhanced dynamic range and reference-free operation

Valiyaparambil C. Pretheesh Kumar, Angarai Ganesan

OE, Vol. 61, Issue 05, 054108, (May 2022) https://doi.org/10.1117/12.10.1117/1.OE.61.5.054108

KEYWORDS: Wavefronts, Wavefront sensors, Zernike polynomials, Optical engineering, Reconstruction algorithms, Wavefront reconstruction, MATLAB, Image processing, Sensors, Algorithms

Read Abstract +

Proceedings Article | 15 June 2018 Paper

Effect of visibility of the fringes on the tilt measurement using a cyclic interferometer and polarization phase shifting

V. C. Pretheesh Kumar, C. Joenathan, A. Bernal, A. Ganesan

Proceedings Volume 10692, 106921F (2018) https://doi.org/10.1117/12.2311303

KEYWORDS: Interferometers, Phase shifting, Visibility, Interferometry, Polarization, Mirrors, Wave plates, Phase shifts, CCD cameras, Beam splitters

Read Abstract +

Proceedings Article | 23 August 2017 Presentation + Paper

Experimental investigation of natural convection in a rectangular cavity with two protruded half cylinders using a Mach-Zehnder interferometer

Akhil Krishnan Maliackal, A. Ganesan, Annamalai Mani

Proceedings Volume 10373, 103730C (2017) https://doi.org/10.1117/12.2273716

KEYWORDS: Convection, Mach-Zehnder interferometers, Visualization, Interferometry, Cooling equipment, Copper, Temperature metrology, Helium neon lasers

Read Abstract +

SPIE Journal Paper | 1 February 2017

Quantitative assessment of soft tissue deformation using digital speckle pattern interferometry: studies on phantom breast models

Udayakumar Karuppanan, Sujatha Narayanan Unni, Ganesan Angarai

JMI, Vol. 4, Issue 01, 016001, (February 2017) https://doi.org/10.1117/12.10.1117/1.JMI.4.1.016001

KEYWORDS: Tissues, Breast, Fringe analysis, Algorithm development, Speckle pattern, Interferometry, Tissue optics, Computer simulations, Ultrasonography, Image processing

Read Abstract +

Proceedings Article | 28 August 2016 Paper

Effect of beam quality on tilt measurement using cyclic interferometer

V. C. Pretheesh Kumar, A. Ganesan, C. Joenathan, U. Somasundaram

Proceedings Volume 9960, 99600H (2016) https://doi.org/10.1117/12.2240623

KEYWORDS: Wavefront sensors, Interferometers, Interferometry, Quality measurement, Metrology, Michelson interferometers, Monochromatic aberrations, Wavefronts, Mirrors, Beam splitters

Read Abstract +

SPIE Journal Paper | 9 August 2016

Increasing the sensitivity for tilt measurement using a cyclic interferometer with multiple reflections

Valiyaparambil Chacko Pretheesh Kumar, Charles Joenathan, Angarai Ganesan, Umapathy Somasundram

OE, Vol. 55, Issue 08, 084103, (August 2016) https://doi.org/10.1117/12.10.1117/1.OE.55.8.084103

KEYWORDS: Mirrors, Interferometers, Beam splitters, Reflection, Michelson interferometers, Collimation, Interferometry, Optical engineering, Wavefronts, Turbulence

Read Abstract +

SPIE Journal Paper | 23 July 2015

Tolerance analysis of misalignment in an optical system using Shack–Hartmann wavefront sensor: experimental study

Venkataramana Kalikivayi, Valiyaparambil Chacko Pretheesh Kumar, Krithivasan Kannan, Angarai Ganesan

OE, Vol. 54, Issue 07, 075104, (July 2015) https://doi.org/10.1117/12.10.1117/1.OE.54.7.075104

KEYWORDS: Tolerancing, Monochromatic aberrations, Wavefronts, Photovoltaics, Wavefront sensors, Optical components, Optical testing, Optical engineering, Ray tracing, Wavefront reconstruction

Read Abstract +

Proceedings Article | 17 March 2015 Paper

Digital speckle pattern interferometry based anomaly detection in breast mimicking phantoms: a pilot study

K. Udayakumar, N. Sujatha, A. Ganesan

Proceedings Volume 9417, 94171Z (2015) https://doi.org/10.1117/12.2081594

KEYWORDS: Breast, Tissues, Tumors, Finite element methods, Speckle pattern, Interferometry, Breast cancer, Ultrasonography, Mammography, Biomedical optics

Read Abstract +

SPIE Journal Paper | 19 September 2014 Open Access

Special Section Guest Editorial: Practical Holography: New Procedures, Materials, and Applications

Angarai Ganesan, Pietro Ferraro

OE, Vol. 53, Issue 11, 112301, (September 2014) https://doi.org/10.1117/12.10.1117/1.OE.53.11.112301

KEYWORDS: Holography, Holographic interferometry, Microscopy, Digital holography, Physics, 3D displays, Metrology, Nondestructive evaluation, LCDs, Computing systems

DOWNLOAD PAPER

Proceedings Article | 15 September 2014 Open Access

SPIE's School Outreach Activity Program (SOAP) by IIT Madras SPIE Student Chapter: a review

Lavanya Kalikivayi, V. Kalikivayi, K. Udayakumar, A. Ganesan

Proceedings Volume 9188, 91880I (2014) https://doi.org/10.1117/12.2061590

KEYWORDS: Eyeglasses, Eye, Beam splitters, Visualization, Monochromatic aberrations, Photonics, Glasses, Spherical lenses, Diffraction gratings, Refraction

Read Abstract +

DOWNLOAD PAPER

Proceedings Article | 8 September 2014 Paper

Study on decentration-induced optical aberrations in an optical system using Shack Hartmann wavefront sensor

V. Kalikivayi, R. Krishna Kumar, K. Kannan, A. Ganesan

Proceedings Volume 9195, 919505 (2014) https://doi.org/10.1117/12.2061710

KEYWORDS: Wavefront sensors, Monochromatic aberrations, Optical aberrations, Wavefronts, Tolerancing, Optical alignment, Optical components, Optical testing, Microlens array, Microlens

Read Abstract +

Proceedings Article | 26 September 2013 Paper

A novel method for detection of preferred retinal locus (PRL) through simple retinal image processing using MATLAB

V. Kalikivayi, Sudip Pal, A. Ganesan

Proceedings Volume 8856, 885623 (2013) https://doi.org/10.1117/12.2022342

KEYWORDS: Retina, Cones, RGB color model, Image filtering, Image processing, MATLAB, Rods, Eye, Absorption, Visualization

Read Abstract +

Proceedings Article | 2 January 1998 Paper

Novel techniques for the detection of eigen axes and precise angular alignment of highly birefringent (HiBi) fibers using shear interferometry

Vadakke Murukeshan, Alexander Brozeit, A. Ganesan

Proceedings Volume 3211, (1998) https://doi.org/10.1117/12.345536

KEYWORDS: Interferometry, Fiber optics sensors, Gyroscopes, Birefringence, Polarization, Waveguides

Read Abstract +

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

Read Abstract +

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

Read Abstract +

Showing 5 of 16 publications

Conference Committee Involvement (2)

Interferometry XVII: Techniques and Analysis

17 August 2014 | San Diego, California, United States

Interferometry XVI: Techniques and Analysis

13 August 2012 | San Diego, California, United States

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years