Some applications of the gas laser as a source of light for the testing of optical systems

Murty, M. V. R. K. ; Malacara-Hernandez, Daniel (1964) Some applications of the gas laser as a source of light for the testing of optical systems Japanese Journal of Applied Physics, 1 (Suppl. 1-1). pp. 106-112. ISSN 0021-4922

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Official URL: http://jjap.jsap.jp/link?JJAPS/1S1/106/

Abstract

Recently one of the authors has described a simple lateral shearing interferometer. This consists of a single nearly parallel plate of glass and when used in conjunction with a gas laser source forms a simple and stable lateral shearing interferometer. The amount of shear is variable by changing the angle of incidence on the glass plate. This has been used to set up a test procedure for large optical systems (especially large mirrors). A procedure is given for calculating the wavefront from the shearing pattern. Certain problems associated with the use of a gas laser are discussed. In the optical testing applications, it is necessary to control the spatial coherence of the laser independently and a simple method to achieve this objective is described.

Item Type:Article
Source:Copyright of this article belongs to Institute of Pure and Applied Physics.
ID Code:86290
Deposited On:08 Mar 2012 12:42
Last Modified:08 Mar 2012 12:42

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