A Solar Blind Filter for the Ultraviolet Spectral Range

E. G. Vil’kin, L. V. Lapushkina, and A. V. Pashuk

Elektron Central Research Institute, pr. M. Toreza 68, St. Petersburg, 194223 Russia
e-mail: eldy@mail.dux.ru

Received June 8, 2000

Abstract—Transmission factors of potassium films of different thicknesses are calculated. A prototype of a
potassium-based solar blind filter for the ultraviolet spectral range was developed. The filter transmission factor
is 20–30% in a spectral band of 200–300 nm.

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