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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 2 — Jan. 15, 2008
  • pp: 128–130

Beam spot size evolution of Gaussian femtosecond pulses after angular dispersion

Derong Li, Xiaohua Lv, Shaoqun Zeng, and Qingming Luo  »View Author Affiliations


Optics Letters, Vol. 33, Issue 2, pp. 128-130 (2008)
http://dx.doi.org/10.1364/OL.33.000128


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Abstract

Beam spot size evolution of spatially Gaussian femtosecond laser pulses after angular dispersion is analyzed and verified with experiments. A general analytical expression for beam spot size at arbitrary propagation distances is obtained, which indicates that beam spot size evolution after angular dispersion is determined by the direct interaction of spectral lateral walk-off by angular dispersion and the intrinsic divergence of the Gaussian beam. This work reveals insights into the propagation of Gaussian femtosecond laser pulses and beams after angular dispersion and may be important for the generation and application of femtosecond laser pulses.

© 2008 Optical Society of America

OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(140.3300) Lasers and laser optics : Laser beam shaping
(320.0320) Ultrafast optics : Ultrafast optics
(320.2250) Ultrafast optics : Femtosecond phenomena

ToC Category:
Ultrafast Optics

History
Original Manuscript: August 23, 2007
Revised Manuscript: November 25, 2007
Manuscript Accepted: December 7, 2007
Published: January 9, 2008

Citation
Derong Li, Xiaohua Lv, Shaoqun Zeng, and Qingming Luo, "Beam spot size evolution of Gaussian femtosecond pulses after angular dispersion," Opt. Lett. 33, 128-130 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-2-128

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