光纤激光器自组织相干阵列的理论分析
Theoretic analysis on self-organized coherence of fiber laser array
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摘要: 分析了光纤激光器自相干阵列最简单的情况——两个光纤激光器之间的相位锁定过程。建立了该过程的数学模型，并对它的时间特性和输出光束的模式进行了理论和数值分析，讨论了运行频率差和耦合系数对锁相过程的影响。对于运行频率相等的两个光纤激光器，当两个光纤激光器初始相位差不为0时，相位锁定后的激光器阵列输出模式为异相模；对于运行频率不等的情形，给出了锁相运行对两个光纤激光器运行频率差的要求，并分析了降低这种要求的几种方法。Abstract: Elementary theoretical investigation on self-organized fiber laser array was carried out in this paper. The simplest case for the fiber laser array, i.e., the phase-locking course of two fiber lasers was modeled and analyzed theoretically and numerically. The effect of detuning frequency and coupling coefficient to the phase-locking course was analyzed. For the case that there was no frequency detuning, the array was always in out-of-phase mode. Otherwise, the condition of frequency detuning for phase locking was deduced, and the method for weakening the condition was analyzed in short.
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Key words:
- fiber laser /
- coherent combining /
- self-organized coherence /
- laser array /
- out-of-phase mode
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