室温连续波外腔带间级联激光器，调谐范围为3.2至3.6微米。

Room-temperature continuous-wave external cavity interband cascade laser tunable from 3.2 to 3.6 µm.

作者信息

Giraud Etienne, Demolon Pierre, Gresch Tobias, Urio Loïc, Muller Antoine, Maulini Richard

出版信息

Opt Express. 2021 Nov 8;29(23):38291-38297. doi: 10.1364/OE.440525.

Abstract

We report on wide tuning of external cavity interband cascade lasers (EC-ICLs) in continuous-wave operation at room temperature. The antireflection coated ICL gain chips were tuned with a diffraction grating in the Littrow configuration. A tuning range of 313 cm (360 nm) from 2789 cm to 3102 cm (3.22 to 3.58 µm) in continuous wave at 293 K was demonstrated with a 5 µm-wide, 1.5 mm-long gain chip. A maximum output power of 13 mW and a minimum threshold current of 62 mA were measured at the peak gain. The heat dissipation of the chip was 0.2 W at threshold and 0.8 W at the maximum current of 200 mA.

摘要

我们报道了室温下连续波工作的外腔带间级联激光器（EC-ICL）的宽调谐。采用利特罗配置的衍射光栅对镀有增透膜的ICL增益芯片进行调谐。使用一个5 µm宽、1.5 mm长的增益芯片，在293 K的连续波中展示了从2789 cm至3102 cm（3.22至3.58 µm）的313 cm（360 nm）调谐范围。在峰值增益处测得的最大输出功率为13 mW，最小阈值电流为62 mA。芯片在阈值时的散热为0.2 W，在200 mA的最大电流时为0.8 W。