由532nm光纤激光绿色光源泵浦的连续波光参量振荡器。

Continuous-wave optical parametric oscillator pumped by a fiber laser green source at 532 nm.

作者信息

Samanta G K, Kumar S Chaitanya, Das Ritwick, Ebrahim-Zadeh M

机构信息

ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, 08860 Castelldefels, Barcelona, Spain.

出版信息

Opt Lett. 2009 Aug 1;34(15):2255-7. doi: 10.1364/ol.34.002255.

DOI:10.1364/ol.34.002255

PMID:19649062

Abstract

We report a high-power, cw, singly resonant optical parametric oscillator (SRO) using a simple, compact fiber pump laser architecture in the green. The SRO, based on MgO:sPPLT, is pumped by 9.6 W of single-frequency cw radiation at 532 nm obtained by single-pass second-harmonic generation (SHG) of a 30 W Yb fiber laser, also in MgO:sPPLT. Using two identical crystals of 30 mm length for SHG and SRO, we generate cw idler powers of up to 2 W over 855-1408 nm, with a peak-to-peak power stability <11.7% over 40 min, in a TEM(00) spatial mode with M(2)<1.26. Using finite output coupling of the resonant wave, we extract 800 mW of signal power with peak-to-peak power stability <10.7% over 40 min, and a frequency stability <75 MHz over 15 min. The signal and idler output have TEM(00) beam profile with M(2)<1.52 across the tuning range.

摘要

我们报道了一种高功率连续波单谐振光学参量振荡器（SRO），它采用了一种简单、紧凑的绿色光纤泵浦激光器结构。该SRO基于MgO:sPPLT，由通过30 W Yb光纤激光器的单通二次谐波产生（SHG）在532 nm处获得的9.6 W单频连续波辐射泵浦，同样也在MgO:sPPLT中。使用两块长度为30 mm的相同晶体用于SHG和SRO，我们在855 - 1408 nm范围内产生了高达2 W的连续波闲频光功率，在40分钟内峰峰值功率稳定性<11.7%，处于TEM(00)空间模式且M(2)<1.26。通过对谐振波采用有限输出耦合，我们提取了800 mW的信号功率，在40分钟内峰峰值功率稳定性<10.7%，在15分钟内频率稳定性<75 MHz。在整个调谐范围内，信号和闲频光输出具有TEM(00)光束轮廓且M(2)<1.52。