Broadband tunable pulses in quasi-phase-matched crystal based optical parametric amplification

被引：3

作者：

Liu Tao ^{[1
]}

Yu Song ^{[1
]}

Zhang Hua ^{[1
]}

Shi Pei-Ming ^{[1
]}

Gu Wan-Yi ^{[1
]}

机构：

[1] Beijing Univ Posts & Telecommun, Key Lab Opt Commun & Lightwave Technol Minist Edu, Beijing 100876, Peoples R China

来源：

ACTA PHYSICA SINICA | 2009年 / 58卷 / 04期

关键词：

optical parametric amplification; grating period; noncollinear geometry; bandwidth; GENERATION; OSCILLATION; GAIN;

D O I：

10.7498/aps.58.2482

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The influence of grating period and noncollinear geometry on the broadly tunable bandwidth of optical parametric amplification are investigated theoretically and numerically for quasi-phase-matched crystal. The concept of maximum grating period is proposed to achieve the phase matching and group-velocity matching simultaneously in a wide range. By employing the maximum grating period, geometry I is recommended due to the much wider signal tunable range compared with geometry II. An expression is proposed to calculate the maximum grating period for congruent periodically poled LiNbO3 with 800 nm pump wave. A feasible scheme is presented to determine the working temperature and noncollinear angle a, maximize the tunable range and simplify :he tuning by rotating angle theta only. Finally, the parametric bandwidth is studied with consideration of the influences of the maximum grating period and noncollinear geometry.

引用

页码：2482 / 2487

页数：6

共 17 条

[1] Nanosecond periodically poled lithium niobate optical parametric generator pumped at 532 nm by a single-frequency passively Q-switched Nd:YAG laser [J].