Tunable bandwidth and parametric bandwidth for periodically poled LiNbO3 based optical parametric amplification

Tao Liu; Baogang Li

doi:10.1117/12.865982

6 October 2010 Tunable bandwidth and parametric bandwidth for periodically poled LiNbO₃ based optical parametric amplification

Tao Liu, Baogang Li

Author Affiliations +

Proceedings Volume 7655, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 76551R (2010) https://doi.org/10.1117/12.865982
Event: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2010, Dalian, China

Abstract

The tunable bandwidth and parametric bandwidth are investigated theoretically and numerically for periodically poled LiNbO₃ based optical parametric amplification. For two different optical parametric amplification geometries, which we called as geometry I and geometry II respectively according to different positions of the wave vector k_s and k_m with respect to wave vector k_p, both the grating period of PPLN and the noncollinear angle θ have optimal values when signal beam can be amplified in a maximum tunable range. With the increase of temperature, the optimal grating period nearlinearly decreased while the optimal noncollinear angle θ almost unchanged. An equation is derived to achieve the optimal grating period for different temperatures. Under the same conditions, the tunable bandwidth we achieved by employing geometry I is closed to that of geometry II. Considering the stability of tunable bandwidth, geometry II should be chose for the actual optical parametric amplification geometry because the tunable bandwidth is insensitive to the small deviation of θ when employing it. The parametric bandwidth varied with grating period and noncollinear angle θ. Compared with the change of θ, parametric bandwidth is sensitive to the variation of grating period. When achieving maximum and flat parametric bandwidth, the optimal grating period and optimal noncollinear angle θ are equal to those at which we obtained the maximum tunable bandwidth.

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Tao Liu and Baogang Li "Tunable bandwidth and parametric bandwidth for periodically poled LiNbO₃ based optical parametric amplification", Proc. SPIE 7655, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 76551R (6 October 2010); https://doi.org/10.1117/12.865982

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KEYWORDS

Phase matching

Crystals

Nonlinear crystals

Lithium

Optics manufacturing

Femtosecond phenomena

Mid-IR

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