期刊
OPTICAL MATERIALS EXPRESS
卷 3, 期 11, 页码 1872-1884出版社
OPTICAL SOC AMER
DOI: 10.1364/OME.3.001872
关键词
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资金
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1306397] Funding Source: National Science Foundation
Quantum cascade laser (QCL) is an important source of electromagnetic radiation in mid infrared region. Recent research in mid-IR QCLs has resulted in record high wallplug efficiency (WPE), high continuous wave (CW) output power, single mode operation and wide tunability. CW output power of 5.1 W with 21% WPE has been achieved at room temperature (RT). A record high WPE of 53% at 40K has been demonstrated. Operation wavelength of QCL in CW at RT has been extended to as short as 3 mu m. Very high peak power of 190 W has been obtained from a broad area QCL of ridge width 400 mu m. 2.4W RT, CW power output has been achieved from a distributed feedback (DFB) QCL. Wide tuning based on dual section sample grating DFB QCLs has resulted in individual tuning of 50cm(-1) and 24 dB side mode suppression ratio with continuous wave power greater than 100mW. (C) 2013 Optical Society of America
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