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首页> 外文期刊>Optics Letters >High-power, continuous-wave, current-tunable, single-mode quantum-cascade distributed-feedback lasers at λapprox5.2 and λapprox7.95 μm
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High-power, continuous-wave, current-tunable, single-mode quantum-cascade distributed-feedback lasers at λapprox5.2 and λapprox7.95 μm

机译:λapprox5.2和λapprox7.95μm的高功率,连续波,电流可调,单模量子级联分布式反馈激光器

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摘要

Quantum-cascade distributed-feedback lasers with high-power, continuous-wave (cw), tunable, single-mode emission are reported. The emission wavelengths are near 5.2 and 7.95 μm. The lasers are operated at liquid-nitrogen temperature and above. A maximum output power of>100 mW is obtained per facet at 80 K for both wavelengths, which is the result of careful positioning of the peak gain with respect to the Bragg wavelength. Continuous tuning with either heat-sink temperature or cw current is demonstrated. The tuning coefficients are 0.35 nm/K (5.2 μm) and 0.51 nm/K (7.95 μm) for thermal tuning and vary from 20 to 40 nm/A for tuning with current. The lasers are being used in high-resolution and high-sensitivity gas-sensing applications.
机译:据报道,具有高功率,连续波(cw),可调,单模发射的量子级联分布反馈激光器。发射波长接近5.2和7.95μm。激光器在液氮温度及以上的温度下工作。对于两种波长,在80 K时,每个小平面都可获得大于100 mW的最大输出功率,这是峰值增益相对于布拉格波长进行仔细定位的结果。演示了用散热器温度或连续电流连续调节的方法。对于热调谐,调谐系数为0.35 nm / K(5.2μm)和0.51 nm / K(7.95μm),对于电流调谐,调谐系数为20至40 nm / A。激光被用于高分辨率和高灵敏度的气体传感应用中。

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