期刊
ELECTRONICS LETTERS
卷 47, 期 11, 页码 667-U56出版社
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/el.2011.0753
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资金
- Texas Higher Education Coordinating Board
Reported are the design and performance of GaInAs/AlInAs/InP quantum cascade laser sources based on intra-cavity second-harmonic generation providing an output at 2.95 mu m wavelength. To produce frequency doubling, devices contain a passive heterostructure tailored for giant optical nonlinearity integrated on top of an active region and patterned for quasi-phase matching. The sources have a threshold current density of 2.2 kA/cm(2) and provide approximately 35 mu W of second-harmonic output at room temperature. The second-harmonic conversion efficiency is approximately 75 mu W/W-2.
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