A theoretical investigation and experiment of hybrid metal-mesh output coupler

作者：Kong Wei-Peng; Wang Du; Guo Chao; Chen Chen; Li Ze-Yu; Luo Zhen-Fei; Zhou Xun^*

来源：Journal of Infrared and Millimeter Waves, 2015, 34(5): 588-592.

• THz laser
• Hybrid output coupler
• metal-mesh
• CO2 laser pump

As one of the key components of high-power optically pumped THz laser, hybrid metal-mesh output coupler is critical for the output power and the beam quality. A model for the hybrid metal-mesh output coupler has been developed. The reflectance, transmittance and loss of the coupler was evaluated. Output couplers at 2.52 THz have been fabricated. The reflectance and transmittance are 70% and 11% for type I, 87% and 4% for type II. The coupler can sustain high-power CO2 laser pump with the reflectivity over 95 %. This research provides theoretical and technical supports for developing high-power optically pumped THz laser.

• 出版日期2015-10
• 单位中国工程物理研究院; 中国工程物理研究院激光聚变研究中心