Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Applied Spectroscopy
  • Vol. 27,
  • Issue 2,
  • pp. 135-136
  • (1973)

Ultrahigh Sensitivity Detection System for Far Infrared Spectrophotometers

Not Accessible

Your library or personal account may give you access

Abstract

The problems of detection in far infrared grating spectrophotometers can generally be related to several factors: (1) low intensity of available radiation from the source, (2) energy loss due to the filters which are necessary for blocking of unwanted radiation, (3) only a narrow band of energy (the resolution width) available to the detector in a given time increment, (4) inefficiencies in the optical train, and (5) detector characteristics such as sensitivity to incident radiation and inherent noise fluctuations. Some of these problems can be solved in part by careful design of filters and optics. However, even in the case of a nearly perfect optical train the detector sensitivity becomes the limiting factor, and large improvements can be made only by cooling the detector to low temperatures and reducing the background radiation seen by the detector. The low temperature germanium bolometer detector developed by Low<sup>1</sup> is several hundred to several thousand time more sensitive than uncooled detectors, depending on the incident background level, and, properly coupled to the spectrophotometer optical train, offers the possibility of greatly enhancing the performance of far infrared instruments.

PDF Article
More Like This
The Cooled Germanium Bolometer as a Far Infrared Detector

Charlie E. Jones, A. Ray Hilton, J. B. Damrel, and C. C. Helms
Appl. Opt. 4(6) 683-685 (1965)

An Optical Null Double-Beam Far Infrared Spectrophotometer

Hiroshi Yoshinaga, Shigeo Minami, Isao Makino, Isao Iwahashi, Masao Inaba, and Koichi Matsumoto
Appl. Opt. 3(12) 1425-1430 (1964)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved