Controlled fundamental supermode operation of phase-locked arrays of gain-guided diode lasers
Controlled fundamental supermode operation of phase-locked arrays of gain-guided diode lasers
复制标题
增益引导二极管激光器锁相阵列的受控基本超模操作
DOI：
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发表时间：
1984
期刊：
影响因子：
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通讯作者：
A. Yariv
中科院分区：
文献类型：
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作者：
E. Kapon;J. Katz;S. Margalit;A. Yariv
均匀半导体激光阵列倾向于在其超模的叠加中振荡，从而导致大的光束发散和光谱扩展。从理论上讨论了锁相阵列中超模的鉴别问题。结果表明，增益制导激光器的复杂光场所产生的近场干涉图案可以使增益制导阵列的超模识别成为可能，从而有利于基模的识别。在GaAlAs/GaAs增益制导激光阵列中首次展示了一种基本的超模操作。这是通过单个激光触点控制阵列上的电流（增益）分布来实现的。
Uniform semiconductor laser arrays tend to oscillate in a superposition of their supermodes, thus leading to large beam divergence and spectral spread. Discrimination among the supermodes in phase-locked arrays is discussed theoretically. It is shown that supermode discrimination in gain-guided arrays, in favor of the fundamental supermode, is made possible by the near-field interference patterns which result from the complex optical fields of the gain-guided lasers. A fundamental supermode operation is demonstrated, for the first time, in GaAlAs/GaAs gain-guided laser arrays. This is achieved by control of the current (gain) profile across the array by means of individual laser contacts.