激光器
材料科学
光电子学
光抽运
散热片
激光功率缩放
量子阱
垂直腔面发射激光器
激光泵浦
边坡效率
光学
波长
光纤激光器
物理
热力学
作者
Davide Priante,Mingyang Zhang,Alexander R. Albrecht,Roman Bek,Michael Zimmer,Catherine Nguyen,David Follman,Garrett D. Cole,Mansoor Sheik‐Bahae
标识
DOI:10.1109/jstqe.2021.3109803
摘要
We present a detailed characterization and comparative study of a membrane external-cavity surface-emitting laser (MECSEL) operating in the λ = 1125-1190 nm wavelength range under in-well pumping (at 1070 nm) and barrier-pumping (at 808 nm). The slope efficiency of the laser is significantly improved from 21% with barrier-pumping to 39% when pumping only the quantum wells at 1070 nm at a heat-sink temperature of 10 °C. To address the low pump absorbance with in-well pumping, we design and implement a low-aberration multi-pass pumping scheme. An optical output power of 28.5 W and slope efficiency of ∼28% is achieved with 8 circulating passes. This represents the highest output power demonstrated in any MECSEL, as well as the highest output power in-well pumped vertical external-cavity surface-emitting laser (VECSEL). It is noted that our reported output power is only limited by the available laser input power and no thermal roll-over is observed.
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