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Optics Letters

Optics Letters

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  • Vol. 24, Iss. 23 — Dec. 1, 1999
  • pp: 1777–1779

High-energy pulse compression by use of negative phase shifts produced by the cascade χ(2)(2) nonlinearity

Xiang Liu, Liejia Qian, and Frank Wise  »View Author Affiliations


Optics Letters, Vol. 24, Issue 23, pp. 1777-1779 (1999)
http://dx.doi.org/10.1364/OL.24.001777


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Abstract

We report a simple optical pulse-compression technique based on quadratic nonlinear media. Negative nonlinear phase shifts are generated by phase-mismatched second-harmonic generation, and the phase-modulated pulses are then compressed by propagation through materials with normal dispersion. Millijoule-energy pulses from a Ti:sapphire amplifier are compressed from 120 to 30 fs, and calculations indicate that compression ratios of >10 are realistically achievable by use of this approach with optimal materials. The insertion loss of the compressor can be less than 10% of the pulse energy, and scaling to higher pulse energies will be straightforward.

© 1999 Optical Society of America

OCIS Codes
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(320.5520) Ultrafast optics : Pulse compression
(320.7110) Ultrafast optics : Ultrafast nonlinear optics

Citation
Xiang Liu, Liejia Qian, and Frank Wise, "High-energy pulse compression by use of negative phase shifts produced by the cascade χ(2)(2) nonlinearity," Opt. Lett. 24, 1777-1779 (1999)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-24-23-1777


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