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Cryogenic tests of volume-phase holographic gratings.

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

Authors

Naoyuki Tamura

Peter Luke

Colin Blackburn

David J. Robertson

Nigel A. Dipper

Ray M. Sharples

Jeremy R. Allington-Smith



Contributors

Alan F.M. Moorwood
Editor

Masanori Iye
Editor

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).

Presentation Conference Type Conference Paper (Published)
Conference Name Ground-based Instrumentation for Astronomy
Online Publication Date Sep 30, 2004
Publication Date 2004-09
Publisher SPIE
Volume 5492
Pages 634-642
Series Title Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series
Series ISSN 0277-786X
Book Title Ground-based Instrumentation for Astronomy.
ISBN 9780819454249
DOI https://doi.org/10.1117/12.550797
Public URL https://durham-repository.worktribe.com/output/1163369