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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 16 — Jul. 30, 2012
  • pp: 18066–18071

Role of apodization in optical parametric amplifiers based on aperiodic quasi-phasematching gratings

C. Heese, C. R. Phillips, L. Gallmann, M. M. Fejer, and U. Keller  »View Author Affiliations


Optics Express, Vol. 20, Issue 16, pp. 18066-18071 (2012)
http://dx.doi.org/10.1364/OE.20.018066


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Abstract

We experimentally demonstrate and analyze two different techniques for apodizing the nonlinear coupling in aperiodically poled MgO:LiNbO3 (APPLN) used in an ultrabroadband optical parametric chirped pulse amplifier (OPCPA). With an adiabatic increase of the nonlinear coupling, a smooth gain spectrum and spectral phase is preserved during amplification in such media. The two approaches we explore are poling period apodization (PPA) and duty cycle apodization (DCA). For the first implementation of the apodized APPLN amplifier we use a constant chirp-rate in the grating k-vector. The nonlinear coupling is apodized over 10% of the total length at each side of the APPLN chip. This allows us to achieve high-intensity output pulses with clean temporal structure.

© 2012 OSA

OCIS Codes
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.7090) Lasers and laser optics : Ultrafast lasers
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: May 3, 2012
Revised Manuscript: July 10, 2012
Manuscript Accepted: July 17, 2012
Published: July 23, 2012

Citation
C. Heese, C. R. Phillips, L. Gallmann, M. M. Fejer, and U. Keller, "Role of apodization in optical parametric amplifiers based on aperiodic quasi-phasematching gratings," Opt. Express 20, 18066-18071 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-16-18066


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References

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