用于超连续谱产生的4.35千瓦峰值功率飞秒脉冲锁模垂直外腔面发射激光器

4.35 kW peak power femtosecond pulse mode-locked VECSEL for supercontinuum generation.

作者信息

Wilcox Keith G, Tropper Anne C, Beere Harvey E, Ritchie David A, Kunert Bernardette, Heinen Bernd, Stolz Wolfgang

机构信息

School of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, UK.

出版信息

Opt Express. 2013 Jan 28;21(2):1599-605. doi: 10.1364/OE.21.001599.

DOI:10.1364/OE.21.001599

PMID:23389144

Abstract

We report a passively mode-locked vertical external cavity surface emitting laser (VECSEL) producing 400 fs pulses with 4.35 kW peak power. The average output power was 3.3 W and the VECSEL had a repetition rate of 1.67 GHz at a center wavelength of 1013 nm. A near-antiresonant, substrate-removed, 10 quantum well (QW) gain structure designed to enable femtosecond pulse operation is used. A SESAM which uses fast carrier recombination at the semiconductor surface and the optical Stark effect enables passive mode-locking. When 1 W of the VECSEL output is launched into a 2 m long photonic crystal fiber (PCF) with a 2.2 µm core, a supercontinuum spanning 175 nm, with average power 0.5 W is produced.

摘要

我们报道了一种被动锁模垂直外腔面发射激光器（VECSEL），它能产生脉宽为400 fs、峰值功率为4.35 kW的脉冲。平均输出功率为3.3 W，该VECSEL在中心波长1013 nm处的重复频率为1.67 GHz。采用了一种近非谐振、去除衬底的10量子阱（QW）增益结构，该结构旨在实现飞秒脉冲运转。一种利用半导体表面的快速载流子复合和光学斯塔克效应的SESAM实现了被动锁模。当将1 W的VECSEL输出光注入到一根芯径为2.2 µm、长度为2 m的光子晶体光纤（PCF）中时，可产生一个平均功率为0.5 W、跨度为175 nm的超连续谱。