Shukla, R. P. ; Dokhanian, M. ; George, M. C. ; Putcha, Venkateswarlu (1991) Laser beam collimation using a phase conjugate Twyman-Green interferometer Optical Engineering, 30 . pp. 386-390. ISSN 0091-3286
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Official URL: http://spiedigitallibrary.org/oe/resource/1/opegar...
Related URL: http://dx.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.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The International Society for Optical Engineering. |
| Keywords: | Collimation; Interferometers; Laser Beams; Phase Conjugation; Defocusing; Gratings (Spectra); Moire Interferometry; Wave Interaction |
| ID Code: | 68577 |
| Deposited On: | 08 Nov 2011 04:05 |
| Last Modified: | 08 Nov 2011 04:05 |
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