Laser beam collimation using a phase conjugate Twyman-Green interferometer

Ram Prakash Shukla; Mostafa Dokhanian; M. C. George; Putcha Venkateswarlu

doi:10.1117/12.55817

1 April 1991 Laser beam collimation using a phase conjugate Twyman-Green interferometer

Ram Prakash Shukla, Mostafa Dokhanian, M. C. George, Putcha Venkateswarlu

Author Affiliations +

Optical Engineering, Vol. 30, Issue 4, (April 1991). https://doi.org/10.1117/12.55817

Abstract

This paper presents an improved technique for testing laser beam collimation using a phase conjugate Twyman-Green interferometer. The technique is useful for measuring laser beam divergence. It is possible using this technique to detect the defocusing of the order of one micrometer for a well corrected collimating lens. A relation is derived for the defocusing that can be detected by the phase conjugate interferometer.

Citation Download Citation

Ram Prakash Shukla, Mostafa Dokhanian, M. C. George, and Putcha Venkateswarlu "Laser beam collimation using a phase conjugate Twyman-Green interferometer," Optical Engineering 30(4), (1 April 1991). https://doi.org/10.1117/12.55817

Published: 1 April 1991

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