Abstract
We describe a low-pass filter that provides high in-band transmittance and excellent rejection at ν > 100 cm−1. The transmittance of the filter components was measured at liquid-helium temperatures from 10 to 10,000 cm−1. The total transmittance is >50% for ν < 50 cm−1 and is calculated to be <10−9 for ν > 300 cm−1. The filter was successfully used in a liquid-helium-cooled, rocketborne, far-infrared absolute photometer.
© 1995 Optical Society of America
Full Article | PDF ArticleMore Like This
J. J. Bock, M. Kawada, H. Matsuhara, P. L. Richards, and A. E. Lange
Appl. Opt. 34(19) 3651-3657 (1995)
D. D. Nolte, A. E. Lange, and P. L. Richards
Appl. Opt. 24(10) 1541-1545 (1985)
Shinji Sato, Satio Hayakawa, Toshio Matsumoto, Hiroshi Matsuo, Hiroshi Murakami, Kiyomi Sakai, Andrew E. Lange, and Paul L. Richards
Appl. Opt. 28(20) 4478-4481 (1989)