Transmission gratings and immersion gratings for instruments of Subaru Telescope and TMT

N. Ebizuka, T. Okamoto, M. Takeda, T. Hosobata, Y. Yamagata, M. Sasaki, M. Uomoto, T. Shimatsu, S. Sato, N. Hashimoto, I. Tanaka, T. Hattori, S. Ozaki, W. Aoki

Research output: Contribution to conferencePaper

Abstract

We would introduce current status of developments of a reflector facet transmission (RFT) grating for the WFOS (Wide-Field Optical Spectrograph) of the TMT (Thirty Meter Telescope), hybrid grism (direct vision grating) for the MOIRCS (Multi-Objects Infrared Camera and Spectrograph) of the 8.2m Subaru Telescope, and volume binary (VB) grating for an echelle grism of the MOIRCS. We also introduce test fabrications of a birefringence VPH grating with liquid crystals of an UV curable and normal liquid crystal or a resin of visible light curable, and test fabrications of a quasi-Bragg (QB) immersion grating which is combined a QB grating with tilted mirror array, Littrow prism and surface mirror.

Original languageEnglish
DOIs
Publication statusPublished - 2017 Nov 13
Event9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017 - Hiroshima City, Japan
Duration: 2017 Nov 132017 Nov 17

Other

Other9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017
CountryJapan
CityHiroshima City
Period17/11/1317/11/17

Keywords

  • Echelle spectrograph
  • Mems technology
  • RCWA
  • Shaper cutting
  • Volume grating

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering

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    Ebizuka, N., Okamoto, T., Takeda, M., Hosobata, T., Yamagata, Y., Sasaki, M., Uomoto, M., Shimatsu, T., Sato, S., Hashimoto, N., Tanaka, I., Hattori, T., Ozaki, S., & Aoki, W. (2017). Transmission gratings and immersion gratings for instruments of Subaru Telescope and TMT. Paper presented at 9th International Conference on Leading Edge Manufacturing in 21st Century, LEM 2017, Hiroshima City, Japan. https://doi.org/10.1299/jsmelem.2017.9.165