Single-mode high-power interband cascade lasers for mid-infrared absorption spectroscopy.
Single-mode high-power interband cascade lasers for mid-infrared absorption spectroscopy.
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用于中红外吸收光谱的单模高功率带间级联激光器。
DOI：
10.1364/oe.23.002446
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发表时间：
2015
期刊：
影响因子：
3.8
通讯作者：
S. Forouhar
中科院分区：
文献类型：
--
作者：
C. Borgentun;C. Frez;R. Briggs;M. Fradet;S. Forouhar
对于高灵敏度吸收光谱，能够在 3 至 5 µm 波长范围内发射高光输出功率的单模光源至关重要。在这里，我们报告了带间级联激光器，该激光器使用二阶横向耦合布拉格光栅进行分布式反馈，在室温下以单光谱模式发射 20 mW 的光功率，在 0 °C 下发射高达 40 mW 的光功率。该激光器采用双脊设计，其中一个 3 µm 宽的窄顶脊用于限制光学模式，另一个 9 µm 宽的脊用于限制电流。这些激光器是为集成腔输出光谱仪器而开发的，用于在 3.3746 µm 波长下平流层检测氯化氢，并以超过 34 mW 的单模功率以目标波长发射。
For high-sensitivity absorption spectroscopy, single-mode light sources capable of emitting high optical output power in the 3 to 5 µm wavelength range are vital. Here, we report on interband cascade lasers that emit 20 mW of optical power in a single spectral mode at room temperature and up to 40 mW at 0 °C using second-order laterally coupled Bragg gratings for distributed feedback. The lasers employ a double-ridge design with a narrow 3-µm-wide top ridge to confine the optical mode and a 9-µm-wide ridge for current confinement. The lasers were developed for an integrated cavity output spectroscopy instrument for stratospheric detection of hydrogen chloride at a wavelength of 3.3746 µm and emit at the target wavelength with more than 34 mW of single-mode power.