Cryogenic VPH gratings for the CELT/TMT

Sebastien Blais-Ouellette; Dani Guzman; Amal Elgamil; Richard Rallison

doi:10.1117/12.552185

24 September 2004 Cryogenic VPH gratings for the CELT/TMT

Sebastien Blais-Ouellette, Dani Guzman, Amal Elgamil, Richard Rallison

Proceedings Volume 5494, Optical Fabrication, Metrology, and Material Advancements for Telescopes; (2004) https://doi.org/10.1117/12.552185
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

Characterization of Volume Phase Holographic gratings at cryogenic temperatures have been conducted using a new test facility at Caltech. The new test bench includes a cryostat that allows large angles for incident and diffracted light. Gratings under tests are shielded from thermal background, and precisely and uniformly temperature controlled. Preliminary results are presented and show little temperature dependence of the efficiency function.

Citation Download Citation

Sebastien Blais-Ouellette, Dani Guzman, Amal Elgamil, and Richard Rallison "Cryogenic VPH gratings for the CELT/TMT", Proc. SPIE 5494, Optical Fabrication, Metrology, and Material Advancements for Telescopes, (24 September 2004); https://doi.org/10.1117/12.552185

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