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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 22, Iss. 9 — Sep. 1, 2005
  • pp: 1903–1908

Transverse intensity distributions of a broadband laser modulated by a hard-edged aperture

Runwu Peng, Yunxia Ye, Zhixiang Tang, and Dianyuan Fan  »View Author Affiliations


JOSA A, Vol. 22, Issue 9, pp. 1903-1908 (2005)
http://dx.doi.org/10.1364/JOSAA.22.001903


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Abstract

By means of the Huygens-Fresnel diffraction integral, the field representation of a laser beam modulated by a hard-edged aperture is derived. The near-field and far-field transverse intensity distributions of the beams with different bandwidths are analyzed by using the representation. The numerical calculation results indicate that the amplitudes and numbers of the intensity spikes decrease with increasing bandwidth, and beam smoothing is achieved when the bandwidth takes a certain value in the near field. In the far field, the radius of the transverse intensity distribution decreases as the bandwidth increases, and the physical explanation of this fact is also given. copy 2005 Optical Society of America

© 2005 Optical Society of America

OCIS Codes
(050.1220) Diffraction and gratings : Apertures
(050.1940) Diffraction and gratings : Diffraction
(140.3300) Lasers and laser optics : Laser beam shaping
(260.1960) Physical optics : Diffraction theory
(350.5500) Other areas of optics : Propagation

Citation
Runwu Peng, Yunxia Ye, Zhixiang Tang, and Dianyuan Fan, "Transverse intensity distributions of a broadband laser modulated by a hard-edged aperture," J. Opt. Soc. Am. A 22, 1903-1908 (2005)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-22-9-1903


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