Inverse design of two-dimensional disordered structures for spectral optimization of random lasers
Inverse design of two-dimensional disordered structures for spectral optimization of random lasers
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DOI：
10.1016/j.optcom.2021.127775
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发表时间：
2021-12
影响因子：
2.4
通讯作者：
T. Okamoto;Keigo Imamura;Kouki Kajisa
中科院分区：
文献类型：
--
作者：
T. Okamoto;Keigo Imamura;Kouki Kajisa
设计二维随机激光器的无序增益介质的结构以获得特定的发射光光谱。具有棋盘结构的散射介质用于产生随机激光。使用直接二分搜索方法进行结构优化。模拟结果表明，发射的光可以集中在单一波长或特定波长范围内。还检查了泵浦速率和制造误差对激光发射优化光谱的影响。在本文中，我们提出了一种新的设计方案，通过将多重散射介质视为确定性空腔来实现具有任何指定光谱形状的激光发射。
The structure of disordered gain media for a two-dimensional random laser was designed to obtain the specified spectrum of the emitted light. A scattering medium with a checkerboard structure was used to produce random lasing. Structural optimization was performed using a direct binary search method. The simulation results show that the emitted light can be concentrated at a single wavelength or within a specific wavelength range. The effect of the pump rate and manufacturing errors on the optimized spectrum of the laser emission was also examined. In this paper, we propose a new design scheme for achieving laser emission with any specified spectral shape by considering a multiple scattering medium as deterministic cavities.