Influence of signal and pump wavelengths on the characteristics of ultrashort-pulse optical parametric generation

Xu Li; Zhen-he Zhu; Tao Gu; Yu-nan Sun

doi:10.1117/12.580371

28 January 2005 Influence of signal and pump wavelengths on the characteristics of ultrashort-pulse optical parametric generation

Xu Li, Zhen-he Zhu, Tao Gu, Yu-nan Sun

Author Affiliations +

Proceedings Volume 5646, Nonlinear Optical Phenomena and Applications; (2005) https://doi.org/10.1117/12.580371
Event: Photonics Asia, 2004, Beijing, China

Abstract

The shapes and durations of generated pulses and the output intensity of ultrashort-pulse (USP) optical parametric generation (OPG) for two cases of λ_p=0.4μm and λ_p=0.8μm are calculated as functions of signal wavelength. The calculation result shows that the conversion efficiency of photon number reduces when the generated pulse frequencies are tuned away from the degenerate point (ν_s=ν_i=ν_p/2), and the signal pulse duration is lengthened when the generated pulse frequencies are tuned far away from the degenerate point. These results can be explained. For this purpose, the intrapulse group-velocity dispersion (IGVD) and group-velocity mismatch (GVM) parameters are calculated as functions of signal wavelength; a new reference of nonlinear interaction length -- pulse-leaving length is introduced to describe the effects of GVM more directly and is calculated as a function of signal wavelength; the phase mismatch for side frequencies of signal, idler and pump pulses,Δk_si,Δk_ps and Δk_pi are calculated as functions of signal wavelength.

Citation Download Citation

Xu Li, Zhen-he Zhu, Tao Gu, and Yu-nan Sun "Influence of signal and pump wavelengths on the characteristics of ultrashort-pulse optical parametric generation", Proc. SPIE 5646, Nonlinear Optical Phenomena and Applications, (28 January 2005); https://doi.org/10.1117/12.580371

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