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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 8 — Apr. 16, 2007
  • pp: 4726–4734

Dispersion characteristics of acousto-optic deflector for scanning Gaussian laser beam of femtosecond pulses

Derong Li, Zeng Shaoqun, Xiaohua Lv, Jun Liu, Rui Du, Runhua Jiang, Wei R. Chen, and Qingming Luo  »View Author Affiliations

Optics Express, Vol. 15, Issue 8, pp. 4726-4734 (2007)

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Pulse evolution after the acousto-optic deflector (AOD) and its dependence on AOD parameters is not clear, but is important to AOD applications in scanning microscopy. By considering the abnormal Bragg AOD as a combination of a dispersion media and a diffraction grating with Littrow structure, the dispersion characteristics of AOD when scanning Gaussian laser beam of femtosecond pulses were analyzed. Pulse width about AOD parameters was explored theoretically and verified with experiments. It is found that after exiting AOD, the pulse width of laser beam either merely decreases or first decreases and then increases before it finally goes steady with the propagation distance, depending on the interaction between the material dispersion and angular dispersion.

© 2007 Optical Society of America

OCIS Codes
(170.5810) Medical optics and biotechnology : Scanning microscopy
(230.1040) Optical devices : Acousto-optical devices
(320.5520) Ultrafast optics : Pulse compression
(320.7090) Ultrafast optics : Ultrafast lasers

ToC Category:
Optical Devices

Original Manuscript: February 13, 2007
Revised Manuscript: March 18, 2007
Manuscript Accepted: March 29, 2007
Published: April 3, 2007

Derong Li, Shaoqun Zeng, Xiaohua Lv, Jun Liu, Rui Du, Runhua Jiang, Wei R. Chen, and Qingming Luo, "Dispersion characteristics of acousto-optic deflector for scanning Gaussian laser beam of femtosecond pulses," Opt. Express 15, 4726-4734 (2007)

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