Analysis of high-frequency oscillations in mutually-coupled nano-lasers

The dynamics of mutually coupled nano-lasers has been analyzed using rate equations which include the Purcell cavity-enhanced spontaneous emission factor F and the spontaneous emission coupling factor beta. It is shown that in the mutually-coupled system; small-amplitude oscillations with frequencies of order 100 GHz are generated and are maintained with remarkable stability. The appearance of such high-frequency oscillations is associated with the effective reduction of the carrier lifetime for larger values of the Purcell factor, F, and spontaneous coupling factor, beta. In mutually-coupled nano-lasers the oscillation frequency changes linearly with the frequency detuning between the lasers. For non-identical bias currents, the oscillation frequency of mutually-coupled nano-lasers also increases with bias current. The stability of the oscillations which appear in mutually coupled nano-lasers offers opportunities for their practical applications and notably in photonic integrated circuits. (C) 2018 Optical Society or America under the terms of the OSA Open Access Puhlishing Agreement

利用包含珀塞尔腔增强自发辐射因子F和自发辐射耦合因子β的速率方程，对相互耦合的纳米激光器的动力学进行了分析。结果表明，在相互耦合的系统中，会产生频率约为100吉赫兹的小振幅振荡，并且具有显著的稳定性。这种高频振荡的出现与珀塞尔因子F和自发耦合因子β较大时载流子寿命的有效缩短有关。在相互耦合的纳米激光器中，振荡频率随激光器之间的频率失谐线性变化。对于不同的偏置电流，相互耦合的纳米激光器的振荡频率也随偏置电流增加。相互耦合的纳米激光器中出现的振荡的稳定性为其实际应用，特别是在光子集成电路中的应用提供了机会。（根据美国光学学会开放获取出版协议条款，2018年美国光学学会版权所有）