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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 66, Iss. 12 — Dec. 1, 1976
  • pp: 1384–1388

Propagation of laser beams having an on-axis null in the presence of thermal blooming

J. E. Pearson, C. Yeh, and W. P. Brown, Jr.  »View Author Affiliations


JOSA, Vol. 66, Issue 12, pp. 1384-1388 (1976)
http://dx.doi.org/10.1364/JOSA.66.001384


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Abstract

The propagation of focused beams having an on-axis irradiance null is considered in the presence of thermal blooming. Two cases are treated: (a) beam profiles that have an irradiance zero in the beam center at the focal plane as well as the transmitter aperture; (b) beam profiles that have an on-axis irradiance null only at the transmitter. It is demonstrated that none of the beam profiles considered in case (a) has a meaningful advantage over a Gaussian beam profile. Some of the case (b) profiles do produce a larger bloomed irradiance in the focal plane, particularly when the initial intensity distribution is very uniform in its nonzero regions. Addition of a simple central obscuration to a “filled” irradiance distribution is found to have no advantage, however, for the cases considered.

© 1976 Optical Society of America

Citation
J. E. Pearson, C. Yeh, and W. P. Brown, Jr., "Propagation of laser beams having an on-axis null in the presence of thermal blooming," J. Opt. Soc. Am. 66, 1384-1388 (1976)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-66-12-1384

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