1 April 1991 Laser beam collimation using a phase conjugate Twyman-Green interferometer
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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.
Ram Prakash Shukla, Ram Prakash Shukla, Mostafa Dokhanian, Mostafa Dokhanian, M. C. George, M. C. George, Putcha Venkateswarlu, 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 . Submission:
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