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Performance of a low-pass filter for far-infrared wavelengths

Bock, J. J. and Lange, A. E. (1995) Performance of a low-pass filter for far-infrared wavelengths. Applied Optics, 34 (31). pp. 7254-7257. ISSN 0003-6935.

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We describe a low-pass filter that provides high in-band transmittance and excellent rejection at nu > 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 nu < 50 cm^-1 and is calculated to be < 10^-9 for nu > 300 cm^-1. The filter was successfully used in a liquid-helium-cooled, rocketborne, far-infrared absolute photometer.

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Bock, J. J.0000-0002-5710-5212
Additional Information:© 1995 Optical Society of America Received 18 April 1995; revised manuscript received 20 July 1995. The authors thank P. L. Richards for the use of his spectrometer. The details of the LP100 filter were kindly provided by M. T. Stier. The authors acknowledge support by NASAunder grants NAGW-1352 and NGT-50771.
Subject Keywords:Far-infrared, low-pass filter, spectroscopy
Issue or Number:31
Record Number:CaltechAUTHORS:BOCao95a
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:2910
Deposited By: Archive Administrator
Deposited On:06 May 2006
Last Modified:03 Mar 2020 13:01

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