Volume-Phase Holographic Gratings and the Efficiency of Three Simple Volume-Phase Holographic Gratings

Astronomy and Astrophysics – Astronomy

Scientific paper

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Instrumentation: Spectrographs

Scientific paper

Volume-phase holographic (VPH) gratings show great potential as an alternative dispersing element to the classical surface-relief (SR) gratings presently used in most astronomical spectrographs. We present an introduction to this technology and give the results of an evaluation of three different VPH gratings: a 300 line mm-1 grating optimized at 1064 nm, a 1200 line mm-1 grating optimized at 532 nm, and a 2400 line mm-1 grating optimized for operation at 532 nm.

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