InAs/AlSb widely tunable external cavity quantum cascade laser around 3.2 μm
InAs/AlSb widely tunable external cavity quantum cascade laser around 3.2 μm
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InAs/AlSb 宽范围可调谐外腔量子级联激光器 3.2 μm 左右
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
E. Rafailov
中科院分区：
文献类型：
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作者：
T. Kruczek;K. Fedorova;G. Sokolovskii;R. Teissier;A. Baranov;E. Rafailov
报道了室温、可调谐、外腔短波长 InAs/AlSb 量子级联激光器 (QCL)。通过旋转形成外腔的衍射光栅，可以实现 3190 nm 至 3275 nm 之间光谱范围的 85 nm 波长调谐。为了抑制 QCL 腔内的激光，其脊在外腔端倾斜 7°。通过仔细考虑来自准利特罗配置中的衍射光栅的 TM 偏振波导模式的回波损耗以及来自倾斜激光端面的法布里-珀罗反馈，选择了激光脊的最佳倾斜角度。没有使用抗反射涂层。
Room temperature, tunable, external-cavity short-wavelength InAs/AlSb quantum cascade laser (QCL) is reported. Wavelength tuning of 85 nm for the spectral range between 3190 nm and 3275 nm has been achieved by rotating the diffraction grating forming the external cavity. To suppress lasing inside the QCL cavity, its ridge was tilted by 7° at the external cavity end. The optimal tilting angle of the laser ridge was chosen by careful consideration of the return losses of the TM-polarized waveguide mode from the diffraction grating in a quasi-Littrow configuration and the Fabry-Perot feedback from the tilted laser facet. No antireflection coating was used.