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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 53, Iss. 10 — Apr. 1, 2014
  • pp: 2229–2235

Flat-top picosecond pulses generated by chirped spectral modulation from a Nd:YLF regenerative amplifier for pumping few-cycle optical parametric amplifiers

Katalin Mecseki, Damien Bigourd, Siddharth Patankar, Nicholas H. Stuart, and Roland A. Smith  »View Author Affiliations

Applied Optics, Vol. 53, Issue 10, pp. 2229-2235 (2014)

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In this paper we present an optically synchronized Nd:YLF regenerative amplifier optimized for use as a preamplifier in a few-cycle optical parametric chirped pulse amplification pump laser. In the pump amplification process we employ a combination of spectral modulation and chirping in order to control and optimize the temporal shape of the pulses. We report on a comparative study of two methods for generating near-flat-top or custom real-time variable-shaped pump pulses using either controlled chirp and shaping of the spectrum of the pulses seeding a regenerative amplifier or intracavity spectral filtering to broaden the gain bandwidth of the system. We show that in addition to minimizing gain narrowing and B-integral, the efficiency of the cascaded nonlinear processes of the parametric amplifiers can be increased.

© 2014 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.4480) Lasers and laser optics : Optical amplifiers
(140.3518) Lasers and laser optics : Lasers, frequency modulated

ToC Category:
Lasers and Laser Optics

Original Manuscript: January 21, 2014
Revised Manuscript: February 28, 2014
Manuscript Accepted: February 28, 2014
Published: March 31, 2014

Katalin Mecseki, Damien Bigourd, Siddharth Patankar, Nicholas H. Stuart, and Roland A. Smith, "Flat-top picosecond pulses generated by chirped spectral modulation from a Nd:YLF regenerative amplifier for pumping few-cycle optical parametric amplifiers," Appl. Opt. 53, 2229-2235 (2014)

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