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Applied Optics

Applied Optics


  • Vol. 37, Iss. 7 — Mar. 1, 1998
  • pp: 1236–1242

Optically Anisotropic Crystalline Grisms for Astronomical Spectrographs

Noboru Ebizuka, Masanori Iye, and Toshiyuki Sasaki  »View Author Affiliations

Applied Optics, Vol. 37, Issue 7, pp. 1236-1242 (1998)

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We show that a crystalline LiNbO3 grism and a hybrid grism made of a LiNbO3 transmission grating and a ZnS prism can be new and powerful dispersing elements with refractive indices high enough to realize high spectral resolution for visible to near-infrared astronomical spectrographs with transmission optics. We describe the basic principle and the limitation to minimizing the spectral separation that is due to the inherent birefringence of such an optically anisotropic crystal used for grisms.

© 1998 Optical Society of America

OCIS Codes
(260.1180) Physical optics : Crystal optics
(350.1260) Other areas of optics : Astronomical optics

Noboru Ebizuka, Masanori Iye, and Toshiyuki Sasaki, "Optically Anisotropic Crystalline Grisms for Astronomical Spectrographs," Appl. Opt. 37, 1236-1242 (1998)

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