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The Infrared Imaging Spectrograph (IRIS) for TMT: Volume Phase Holographic Grating Performance Testing and Discussion

Chen, Shaojie; Meyer, Elliot; Wright, Shelley A.; Moore, Anna; Mieda, Etsuko; Larkin, J; Maire, Jêrôme; Simard, Luc


Maximizing the grating efficiency is a key goal for the first light instrument IRIS (Infrared Imaging Spectrograph) currently being designed to sample the diffraction limit of the TMT (Thirty Meter Telescope). Volume Phase Holographic (VPH) gratings have been shown to offer extremely high efficiencies that approach 100% for high line frequencies (i.e., 600 to 6000l/mm), which has been applicable for astronomical optical spectrographs. However, VPH gratings have been less exploited in the...[Show more]

CollectionsANU Research Publications
Date published: 2014
Type: Conference paper
Source: Proceedings of SPIE - The International Society for Optical Engineering
DOI: 10.1117/12.2055609
Access Rights: Open Access


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