期刊
IEEE PHOTONICS TECHNOLOGY LETTERS
卷 30, 期 12, 页码 1099-1102出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2018.2833169
关键词
All-optical modulation; quantum cascade laser; high-speed frequency modulation
资金
- National Natural Science Foundation of China [61177093, 61077057]
- Institute of Fluid Physics Foundation [052430]
- China Post-Doctoral Science Foundation [2018M633408]
Pulse optimization and control are demonstrated in a standard middle-infrared quantum cascade laser by illuminating its front facet with two near-infrared lasers. The 1550- and 850-nm near-infrared lasers are used to optimize the pulse rise/fall time and the pulse shape, respectively, of the quantum cascade laser. Compared with the electric drive, the electron interband transition is directed by the all-optical approach. Simultaneously, the quantum cascade laser's pulse width, amplitude, and repetition rate are controlled precisely by changing the two near-infrared lasers' delay time, average power, and repetition rate. Such an all-optical approach is beneficial in the high-speed optimization and control of the quantum cascade laser pulse. It has the potential for application in free-space optical communication and high-speed frequency modulation spectroscopy.
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