Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

An Infra-Red Prism Spectrometer of High Resolving Power

Not Accessible

Your library or personal account may give you access

Abstract

An infra-red spectrometer employing interchangeable 60°-prisms with faces 10 by 15 cm of potassium bromide, sodium chloride, and lithium fluoride in Wadsworth-Littrow mounting is briefly described. A one-meter 10° off-axis paraboloid is used for collimation. The radiation passing through the exit slit is focused on the thermocouple receiver by means of an ellipsoidal mirror with foci at distances 42 and 6 cm. The entrance slit has two sets of curved jaws, one set for the LiF prism and another for the NaCl and KBr prisms. When prisms are changed by push-button control the proper entrance slit automatically moves into position. The position of sharp bands can be determined to within ±0.005 micron at 5μ and ±0.002 micron at 10μ. The correction for stray radiation is less than 1 percent of full scale deflection below 13μ. With the potassium bromide prism, and lithium fluoride shutter, the correction for stray radiation is 5 percent of total deflection at 15μ and 10 percent at 18μ. When a sodium chloride shutter is used beyond 18μ the correction for stray radiation is negligible. The construction and performance of the instrument are illustrated by nine figures.

© 1947 Optical Society of America

Full Article  |  PDF Article
More Like This
An Automatic Recording Infra-Red Spectrophotometer

W. S. Baird, H. M. O’Bryan, George Ogden, and Dorothy Lee
J. Opt. Soc. Am. 37(10) 754-761 (1947)

Infra-Red Spectrometry from 15 to 25μ

Earle K. Plyler
J. Opt. Soc. Am. 37(10) 746-753 (1947)

An Infra-Red Spectrophotometer for Industrial Research

E. J. Martin, A. W. Fischer, B. Mandel, and R. E. Nusbaum
J. Opt. Soc. Am. 37(11) 923-931 (1947)

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

Figures (9)

You do not have subscription access to this journal. Figure files 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