4.35 kW peak power femtosecond pulse mode-locked VECSEL for supercontinuum generation.
4.35 kW peak power femtosecond pulse mode-locked VECSEL for supercontinuum generation.
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DOI：
10.1364/oe.21.001599
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发表时间：
2013-01
期刊：
影响因子：
3.8
通讯作者：
K. Wilcox;A. Tropper;H. Beere;D. Ritchie;B. Kunert;B. Heinen;W. Stolz
中科院分区：
文献类型：
--
作者：
K. Wilcox;A. Tropper;H. Beere;D. Ritchie;B. Kunert;B. Heinen;W. Stolz
报道了一台被动锁模垂直外腔表面发射激光器(VECSEL)，获得了峰值功率为4.35kW的400ps脉冲。该激光器的平均输出功率为3.3W，中心波长为1013 nm，重复频率为1.67 GHz。使用了一种近反共振的、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操作。在半导体表面使用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1W的VECSEL输出被发射到2m长、纤芯为2.2µm的光子晶体光纤(PCF)中时，产生了平均功率为0.5W、跨度为175 nm的超连续谱。
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.