太赫兹科学与电子信息学报, 2016, 14 (2): 167, 网络出版: 2016-12-07
光泵气体THz激光器金属网栅输出耦合镜设计
Research of hybrid metal-mesh output coupler on optically pumped gas molecules THz laser
THz 激光器 金属网栅输出耦合镜 光刻技术 远红外傅里叶光谱 THz laser hybrid metal-mesh output coupler photoetching far infrared Fourier transform spectroscopy
摘要
为追求光泵气体THz 激光器更高的输出功率和更好的光束质量，设计制作了金属网栅输出耦合镜，金属网栅输出耦合镜相比传统的小孔输出镜具有很多优势。详细描述了金属网栅输出耦合镜的结构，研究了金属网栅的理论模型。选择g /2a =76 μm/20 μm 和g /2a =76 μm/10 μm 这2组参数制作了金属网栅输出耦合镜，利用远红外傅里叶光谱仪对其THz 波段的透过率进行测试，根据计算仿真得到结论：随着金属网栅线宽2a 的增大，金属网栅的THz 辐射透过率增大。
Abstract
In the pursuit of increased THz laser output power and higher beam quality, hybrid metal-mesh output coupler is designed and fabricated. The advantages of hybrid metal-mesh output coupler and its structure are described in this paper. The model of metal-mesh is studied to evaluate the transmittance. g /2a =76 μm/20 μm and g /2a =76 μm/10 μm are chosen to fabricate hybrid metal-mesh output coupler, and its THz transmittance is evaluated by Far Infrared Rays(FIR) Fourier transform spectroscopy. This study and former researches show that the transmittance of metal-mesh gets higher with the increase of 2a .
郭超, 孔维鹏, 王度, 罗振飞, 周逊. 光泵气体THz激光器金属网栅输出耦合镜设计[J]. 太赫兹科学与电子信息学报, 2016, 14(2): 167. GUO Chao, KONG Weipeng, WANG Du, LUO Zhenfei, ZHOU Xun. Research of hybrid metal-mesh output coupler on optically pumped gas molecules THz laser[J]. Journal of terahertz science and electronic information technology, 2016, 14(2): 167.
PDF全文
