Dr. Ajay Kumar Saxena Profile

Dr. Ajay Kumar Saxena

Head, Photonics Div at Indian Institute of Astrophysics

SPIE Involvement:

Author

SPIE Journal Paper | 1 December 2010

Extended use of two crossed Babinet compensators for wavefront sensing in adaptive optics

Lancelot Paul, Ajay Saxena

OE, Vol. 49, Issue 12, 126601, (December 2010) https://doi.org/10.1117/12.10.1117/1.3518068

KEYWORDS: Wavefronts, Wavefront sensors, Sensors, Adaptive optics, Interferometry, Zernike polynomials, Monochromatic aberrations, Optical engineering, Atmospheric optics, Interferometers

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Proceedings Article | 1 November 1997 Paper

Development of technology for vacuum ultraviolet plane grating monochromator to be used with XUV synchrotron source of INDUS I

Ajay Saxena, Ramnath Cowsik

Proceedings Volume 3152, (1997) https://doi.org/10.1117/12.279375

KEYWORDS: Mirrors, Monochromators, Polishing, Zerodur, Vacuum ultraviolet, Extreme ultraviolet, Synchrotron technology, Synchrotrons, Astrophysics, Silica

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Proceedings Article | 15 October 1997 Paper

HiRES: the High-Resolution EUV Spectroheliometer

J. Gethyn Timothy, Paolo Bergamini, Jagadish Bhattacharyya, Martin Huber, Surendra Jain, Giampiero Naletto, Ralph Nicholls, Piergiorgio Nicolosi, Ajay Saxena, Giuseppe Tondello, Arthur Walker

Proceedings Volume 3114, (1997) https://doi.org/10.1117/12.290135

KEYWORDS: Extreme ultraviolet, Telescopes, Mirrors, Sensors, Space telescopes, Spectroscopy, Imaging systems, Spatial resolution, Diffraction gratings, Calibration

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Proceedings Article | 10 December 1993 Paper

Development of an active-optics system for 27-inch thin mirror

Ajay Saxena, J. Lancelot, J. Samson

Proceedings Volume 2003, (1993) https://doi.org/10.1117/12.165442

KEYWORDS: Mirrors, Wavefronts, Telescopes, Active optics, Adaptive optics, Interferometry, Monochromatic aberrations, Wavefront sensors, Polarization, Sensors

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Proceedings Article | 22 January 1993 Paper

HiRES: High-resolution extreme-ultraviolet spectroheliometer toroidal diffraction grating performance evaluation

Thomas Berger, Paolo Bergamini, Arthur Walker, J. Gethyn Timothy, Surendra Jain, Ajay Saxena, Jagadish Bhattacharyya, Martin Huber, Giuseppe Tondello, Giampiero Naletto, Phillip Baker

Proceedings Volume 1764, (1993) https://doi.org/10.1117/12.140849

KEYWORDS: Diffraction gratings, Extreme ultraviolet, Spectrographs, Sensors, Lamps, Ultraviolet radiation, Telescopes, Rockets, Spectral resolution, Spherical lenses

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Proceedings Article | 1 January 1992 Paper

Design and test of a high-resolution EUV spectroheliometer

Thomas Berger, J. Gethyn Timothy, Arthur Walker, Helen Kirby, Jeffrey Morgan, Surendra Jain, Ajay Saxena, Jagadish Bhattacharyya, Martin Huber, Giuseppe Tondello, Giampiero Naletto

Proceedings Volume 1546, (1992) https://doi.org/10.1117/12.51241

KEYWORDS: Mirrors, Telescopes, Sensors, Diffraction gratings, Spectroscopy, Extreme ultraviolet, Grazing incidence, Image quality, X-ray optics, Tolerancing

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SPIE Journal Paper | 1 August 1991

HIRES: a high-resolution stigmatic extreme ultraviolet spectroheliometer for studies of the fine-scale structure of the solar chromosphere, transition region, and corona

J. Gethyn Timothy, Thomas Berger, Jeffrey Morgan, Arthur Walker, Surendra Jain, Ajay Saxena, Jagadish Bhattacharyya, Martin Huber, Giuseppe Tondello, Giampiero Naletto

OE, Vol. 30, Issue 08, (August 1991) https://doi.org/10.1117/12.10.1117/12.55921

KEYWORDS: Extreme ultraviolet, Spectroscopy, Sensors, Diffraction gratings, Imaging systems, Infrared spectroscopy, Rockets, Coronagraphy, Calibration, Space telescopes

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Proceedings Article | 1 February 1991 Paper

High-resolution stigmatic EUV spectroheliometer for studies of the fine scale structure of the solar chromosphere, transition region, and corona

J. Gethyn Timothy, Thomas Berger, Jeffrey Morgan, Arthur Walker, Jagadish Bhattacharyya, Surendra Jain, Ajay Saxena, Martin Huber, Giuseppe Tondello, Giampiero Naletto

Proceedings Volume 1343, (1991) https://doi.org/10.1117/12.23223

KEYWORDS: Extreme ultraviolet, Sensors, Spectroscopy, Diffraction gratings, Imaging systems, Infrared spectroscopy, Coronagraphy, Calibration, Space telescopes, Rockets

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SPIE Journal Paper | 1 December 1990

Low cost method for subarcsecond testing of a right angle prism

Ajay Saxena, L. Yeswanth

OE, Vol. 29, Issue 12, (December 1990) https://doi.org/10.1117/12.10.1117/12.55755

KEYWORDS: Prisms, Fizeau interferometers, Reflection, Optical components, Autocollimation, Interferometers, Glasses, Fringe analysis, Error analysis, Wavefronts

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Proceedings Article | 1 July 1990 Paper

Large optical mirror making technology and facility at Indian Institute of Astrophysics

Ajay Saxena

Proceedings Volume 1319, (1990) https://doi.org/10.1117/12.34906

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Showing 5 of 10 publications

Conference Committee Involvement (2)

Advances in Metrology for X-Ray and EUV Optics IV

12 August 2012 | San Diego, California, United States

Advances in Metrology for X-Ray and EUV Optics III

1 August 2010 | San Diego, California, United States

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