Surface-emitting terahertz quantum cascade laser source based on intracavity difference-frequency generation
Surface-emitting terahertz quantum cascade laser source based on intracavity difference-frequency generation
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基于腔内差频产生的面发射太赫兹量子级联激光源
DOI：
10.1063/1.3009198
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发表时间：
2008
影响因子：
4
通讯作者：
F. Capasso
中科院分区：
文献类型：
--
作者：
C. Pflügl;M. Belkin;Qi Jie Wang;M. Geiser;A. Belyanin;M. Fischer;A. Wittmann;J. Faist;F. Capasso
报道了一种基于双波长中红外量子级联激光器腔内差频产生的面发射太赫兹光源。太赫兹光通过蚀刻到激光脊中的二阶光栅耦合出波导。与从刻面提取差频辐射的源相比，即使相干长度很小，这种方法也能够从设备的整个长度提取太赫兹发射。
We report a surface-emitting terahertz source based on intracavity difference-frequency generation in dual-wavelength midinfrared quantum cascade lasers with integrated giant second-order nonlinear susceptibility. The terahertz light is coupled out of the waveguide by a second-order grating etched into the laser ridges. In contrast to sources where the difference-frequency radiation is extracted from the facet, this approach enables extraction of the terahertz emission from the whole length of the device even when the coherence length is small.
影响因子：
3.8
作者：
Belkin, Mikhail A.;Fan, Jonathan A.;Linfield, Edmund H.
通讯作者：
Linfield, Edmund H.