太赫兹科学与电子信息学报, 2015, 13 (3): 361, 网络出版: 2015-11-30
高输出功率锥形波导太赫兹量子级联激光器
High output power tapered terahertz quantum cascade laser
摘要
制作了基于锥形波导结构的高输出功率的太赫兹(THz)量子级联激光器。激光器采用单面金属波导结构,并采用锥形波导形状提高光输出功率,且保证了良好的光斑远场发散角。激光器水平方向远场光斑发散角为18.4°,器件输出中心波长为93 μm(3.23 THz),器件最高输出功率达到了185 mW,最高工作温度为95 K。80 K 时,器件的最高脉冲输出功率能达到65 mW。基于如此高的输出功率,制作了液氮杜瓦封装的小型便携式太赫兹激光源。
Abstract
High output power terahertz(THz) quantum cascade laser based on tapered waveguide profile is fabricated. Semi-insulating surface-plasma waveguide structure and tapered profile are adopted to enable high output power and excellent far-field lobe profile. The Full Width at Half Maximum(FWHM) of the laser beam in the horizontal direction is 18.4°. The emission wavelength is centered at 93 μm(3.23 THz), the highest output power is 185 mW and the highest operation temperature is 95 K. The output power at 80 K is 65 mW. Based on the high output property, portable terahertz laser source is packaged by liquid nitrogen dewar.
王涛, 刘俊岐, 刘峰奇. 高输出功率锥形波导太赫兹量子级联激光器[J]. 太赫兹科学与电子信息学报, 2015, 13(3): 361. WANG Tao, LIU Junqi, LIU Fengqi. High output power tapered terahertz quantum cascade laser[J]. Journal of terahertz science and electronic information technology, 2015, 13(3): 361.