Nadeem Faisal, Postma Berber R, Postma Geert, Cristescu Simona M, Mandon Julien, Harren Frans J M
Appl Opt. 2018 Jan 10;57(2):154-163. doi: 10.1364/AO.57.000154.
A 3D ray tracing model is used to simulate optical reinjection in a nonresonant optical cavity, for off-axis integrated cavity output spectroscopy. The optical cavities are optimized for maximum intensity enhancement factors via a grid search and a genetic algorithm. Intensity enhancement factors up to 1400 are found for short cavities (3 cm) and up to 101 for long cavities (50 cm). The model predicts that short absorption cells can be used, having a long effective path length and a high throughput power. This opens new opportunities in the field of ultrasensitive absorption spectroscopy and allows the design of compact optical gas sensors.
一个三维光线追踪模型被用于模拟非共振光学腔中的光再注入，以用于离轴集成腔输出光谱学。通过网格搜索和遗传算法对光学腔进行优化，以获得最大强度增强因子。对于短腔（3厘米），发现强度增强因子高达1400，对于长腔（50厘米），高达101。该模型预测，可以使用具有长有效光程和高通过功率的短吸收池。这为超灵敏吸收光谱学领域带来了新机遇，并允许设计紧凑型光学气体传感器。
