Fabrication and testing of large-area VPH gratings

Richard D. Rallison; Ruth W. Rallison; LeRoy D. Dickson

doi:10.1117/12.459477

30 January 2003 Fabrication and testing of large area VPH gratings

Richard D. Rallison, Ruth W. Rallison, LeRoy D. Dickson

Proceedings Volume 4842, Specialized Optical Developments in Astronomy; (2003) https://doi.org/10.1117/12.459477
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

Large area volume phase holographic (VPH) gratings have been made for use in spectrographs attached to large telescopes and for scanning LIDAR systems. Examples of the transmitted wavefronts, the spectral efficiency measurements and other parameters such as uniformity, scatter, absorption and Q have been gathered and presented. Two exposure layouts have been used and are described along with some discussion of modulation and bulk index of processed DCG. A discussion of thickness regimes is given. A special case (Dickson) design is presented with examples of performance and some intrinsic properties.

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Richard D. Rallison, Ruth W. Rallison, and LeRoy D. Dickson "Fabrication and testing of large area VPH gratings", Proc. SPIE 4842, Specialized Optical Developments in Astronomy, (30 January 2003); https://doi.org/10.1117/12.459477

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