Ultraviolet Ca K-line narrow-bandwidth imaging filters based on holographic Bragg gratings in photorefractive materials

Feng Zhao; Koichi Sayano; Harold E. Miller Jr.; Jason Corwin; Nicolette Werner

doi:10.1117/1.601311

1 October 1997 Ultraviolet Ca K-line narrow-bandwidth imaging filters based on holographic Bragg gratings in photorefractive materials

Feng Zhao, Koichi Sayano, Harold E. Miller Jr., Jason Corwin, Nicolette Werner

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Optical Engineering, Vol. 36, Issue 10, (October 1997). https://doi.org/10.1117/1.601311

Current narrow-band optical filters for professional solar astronomy applications are primarily based on Lyot filters.1 However, the Lyot filter is severely limited in operation at UV wavelengths because of the lack of suitable UV hightransmission polarizers. In addition, the Lyot filter is comprised of over 50 elements ~over 30 cm long and weighing several kilograms! that require precise alignment and temperature stabilization for all of the elements.

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Feng Zhao, Koichi Sayano, Harold E. Miller Jr., Jason Corwin, and Nicolette Werner "Ultraviolet Ca K-line narrow-bandwidth imaging filters based on holographic Bragg gratings in photorefractive materials," Optical Engineering 36(10), (1 October 1997). https://doi.org/10.1117/1.601311

Published: 1 October 1997

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