Abstract

This paper describes the results of transmitted wavefront error (WFE) measurements on a volume phase holographic (VPH) grating operating at a temperature of 120 K. The VPH grating was mounted in a cryogenically compatible optical mount and tested in situ in a cryostat. The nominal root mean square (RMS) wavefront error at room temperature was 19 nm measured over a 50 mm diameter test aperture. The WFE remained at 18 nm RMS when the grating was cooled. This important result demonstrates that excellent WFE performance can be obtained with cooled VPH gratings, as required for use in future cryogenic infrared astronomical spectrometers planned for the European Extremely Large Telescope.

©2012 Optical Society of America

Diffracted wavefront measurement of a volume phase holographic grating at cryogenic temperature

Pierre-Alexandre Blanche, Serge Habraken, Philippe Lemaire, and Claude Jamar
Appl. Opt. 45(27) 6910-6913 (2006)

Cryogenic tests of volume-phase holographic gratings: results at 100 K

Naoyuki Tamura, Graham J. Murray, Peter Luke, Colin Blackburn, David J. Robertson, Nigel A. Dipper, Ray M. Sharples, and Jeremy R. Allington-Smith
Appl. Opt. 45(23) 5923-5928 (2006)

Wavefront sensor based on the Talbot effect with the precorrected holographic grating

Dmytro Podanchuk, Vitalij Kurashov, Andrey Goloborodko, Volodymyr Dan’ko, Myhaylo Kotov, and Natalya Goloborodko
Appl. Opt. 51(10) C125-C132 (2012)

Measurement of throughput variation across a large format volume-phase holographic grating

Naoyuki Tamura, Graham J. Murray, Ray M. Sharples, David J. Robertson, and Jeremy R. Allington-Smith
Opt. Express 13(11) 4125-4133 (2005)

Mid-infrared Shack-Hartmann wavefront sensor fully cryogenic using extended source for endoatmospheric applications

Clélia Robert, Vincent Michau, Bruno Fleury, Serge Magli, and Laurent Vial
Opt. Express 20(14) 15636-15653 (2012)