光学
放大器
光放大器
半导体激光器理论
梁(结构)
二极管
物理
激光器
激光束质量
波导管
光电子学
材料科学
激光束
CMOS芯片
作者
Shawn M. Redmond,Kevin Creedon,Jan Kansky,Steven J. Augst,L.J. Missaggia,Michael K. Connors,Robin Huang,Bien Chann,T. Y. Fan,G. W. Turner,Antonio Sanchez‐Rubio
出处
期刊:Optics Letters
[The Optical Society]
日期:2011-03-14
卷期号:36 (6): 999-999
被引量:69
摘要
We have demonstrated active coherent beam combination (CBC) of up to 218 semiconductor amplifiers with 38.5 W cw output using up to eleven one-dimensional 21-element individually addressable diode amplifier arrays operating at 960 nm. The amplifier array elements are slab-coupled-optical-waveguide semiconductor amplifiers (SCOWAs) set up in a master-oscillator–power-amplifier configuration. Diffractive optical elements divide the master-oscillator beam to seed multiple arrays of SCOWAs. A SCOWA was phase actuated by adjusting the drive current to each element and controlled using a stochastic-parallel-gradient-descent (SPGD) algorithm for the active CBC. The SPGD is a hill-climbing algorithm that maximizes on-axis intensity in the far field, providing phase locking without needing a reference beam.
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