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arXiv 1910.04430physics.optics
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具有非线性耦合的laser阵列的改进锁相

Improved phase locking of laser arrays with nonlinear coupling

Simon Mahler, Matthew Goh, Chene Tradonsky, Asher A. Friesem, Nir Davidson

摘要:

提出了一种基于简并腔激光器的装置,用于形成具有腔内可饱和吸收体的非线性耦合激光器阵列。多个$30$激光器被空间相位锁定和时间Q开关。发现具有非线性耦合的布置比具有线性耦合的布置对损耗差的敏感性高$25$倍,并且比具有线性耦合的布置更快$5$倍地收敛到最低损耗锁相状态,从而为具有几个近简并解的问题提供唯一解。

英文摘要:

An arrangement based on a degenerate cavity laser for forming an array of non-linearly coupled lasers with an intra-cavity saturable absorber is presented. More than $30$ lasers were spatially phase locked and temporally Q-switched. The arrangement with nonlinear coupling was found to be $25$ times more sensitive to loss differences and converged $5$ times faster to the lowest loss phase locked state than with linear coupling, thus providing a unique solution to problems that have several near-degenerate solutions.

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