Closed-Loop Quantum Design of a Multi-Watt 1178 nm VECSEL
Closed-Loop Quantum Design of a Multi-Watt 1178 nm VECSEL
复制标题
多瓦 1178 nm VECSEL 的闭环量子设计
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
W. Stoh
中科院分区：
文献类型：
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作者：
J. Moloney;J. Hader;S. Koch;L. Fan;C. Hessenius;M. Fallahi;W. Stoh
设计了一个 1178 nm 光泵浦 VECSEL 子腔（有源反射镜），由在 25 次重复的无源 DBR 反射镜上生长的 10 个高应变 InGaAs QW 组成的谐振周期增益堆栈组成。这是为了允许增益峰值随着温度的升高而快速移动，以及子腔谐振的较慢移动。计算出的 RPG 堆栈内由 808 nm 泵浦激光器产生的热量可以通过我们设备 3D 光学/热建模中纳入的增益数据库准确确定。最终晶圆上的 PL 测量表明，生长在设计规格范围内是准确的，并且单个样品已被切割和处理。
A 1178 nm optically-pumped VECSEL sub-cavity (active mirror) consisting of a resonant periodic gain stack of 10 highly-strained InGaAs QWs grown on a 25-repeat passive DBR mirror was designed. This is to allow the rapid shift of the gain peak with increasing temperature and slower shift of the sub-cavity resonance. The calculated heat generated within the RPG stack due to the 808 nm pump laser can be determined accurately from gain databases incorporated in our 3D optical/thermal modeling of the device. PL measurements on the final wafer showed that the growth was accurate within the design specifications and a single sample was cleaved and processed.