We identify the role of transverse modes in causing temporal instability in an all-solid-state laser system and thus propose a new method to trigger deterministic optical rogue waves. Experimental investigations show that the near-degenerate transverse modes with mode frequency difference close to the relaxation oscillation frequency is responsible for the rogue waves. By tilting the reflective mirror, the transverse modes beating frequency decreases and gets close to relaxation oscillation frequency, thus the system exhibits self-pulsing behavior and rarely-arising giant pulses. The statistical distribution of the pulse intensity deviates from the exponential statistics to the L-shaped distributions with long tails, indicating the appearance of optical rogue waves. The conclusion can be extended to other Class-B lasers where the population inversion cannot be eliminated adiabatically.

中文翻译：

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Nd:YVO4 激光器中由近简并横模引起的确定性光学杂波

我们确定了横模在全固态激光系统中引起时间不稳定性的作用，因此提出了一种触发确定性光学杂波的新方法。实验研究表明，模式频率差接近弛豫振荡频率的近简并横模是造成流氓波的原因。通过倾斜反射镜，横模拍频降低并接近弛豫振荡频率，因此系统表现出自脉冲行为和罕见的巨脉冲。脉冲强度的统计分布从指数统计偏离到长尾的L形分布，表明光学流氓波的出现。