Cryogenic tests of volume-phase holographic gratings

Naoyuki Tamura; Graham J. Murray; Peter Luke; Colin Blackburn; David J. Robertson; Nigel A. Dipper; Ray M. Sharples; Jeremy R. Allington-Smith

doi:10.1117/12.550797

30 September 2004 Cryogenic tests of volume-phase holographic gratings

Naoyuki Tamura, Graham J. Murray, Peter Luke, Colin Blackburn, David J. Robertson, Nigel A. Dipper, Ray M. Sharples, Jeremy R. Allington-Smith

Author Affiliations +

Proceedings Volume 5492, Ground-based Instrumentation for Astronomy; (2004) https://doi.org/10.1117/12.550797
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

We present results from cryogenic tests of a Volume-Phase Holographic (VPH) grating at 200 K measured at near-infrared wavelengths. The aims of these tests were to see whether the diffraction efficiency and angular dispersion of a VPH grating are significantly different at a low temperature from those at a room temperature, and to see how many cooling and heating cycles the grating can withstand. We have completed 5 cycles between room temperature and 200 K, and find that the performance is nearly independent of temperature, at least over the temperature range which we are investigating. In future, we will not only try more cycles between these temperatures but also perform measurements at a much lower temperature (e.g., ~80 K).

Citation Download Citation

Naoyuki Tamura, Graham J. Murray, Peter Luke, Colin Blackburn, David J. Robertson, Nigel A. Dipper, Ray M. Sharples, and Jeremy R. Allington-Smith "Cryogenic tests of volume-phase holographic gratings", Proc. SPIE 5492, Ground-based Instrumentation for Astronomy, (30 September 2004); https://doi.org/10.1117/12.550797

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