Tuning Efficiency and Modulation Speed of Epi-Up and Epidown Mounted Distributed Feedback Quantum Cascade Laser

Authors :: Feng Xie
Catherine Caneau
Satish C. Chaparala
Chung-En Zah
Ming-Tsung Ho
Herve P. LeBlanc
Lawrence C. Hughes
Sean Coleman
Source :: 2014 International Semiconductor Laser Conference.
Publication Year :: 2014
Publisher :: IEEE, 2014.
Abstract: We demonstrated a wide CW wavelength tuning range of 18 cm-1 for an epi-up mounted distributed feedback (DFB) quantum cascade laser (QCL) around 4.5 m, via current change. The wavelength tuning coefficient of an epi-up mounted DFB QCL is about 2.2 times of that of an epi-down mounted one. The 3dB modulation bandwidths of an epi-up and an epi-down mounted DFB QCLs are 15 kHz and 400 kHz, respectively.

Subjects :: Wavelength
Distributed feedback laser
Optics
Materials science
law
Modulation
business.industry
Optoelectronics
Quantum cascade laser
business
Frequency modulation
Temperature measurement
law.invention

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