Wavelength-tunable, GaSb-based, cascaded type-I quantum-well laser emitting over a range of 300 nm

Chichkov, Nikolai B., Yadav, Amit, Zherebtsov, Evgeny, Wang, Meng, Kipshidze, Gela, Belenky, Gregory, Shterengas, Leon and Rafailov, Edik U. (2018). Wavelength-tunable, GaSb-based, cascaded type-I quantum-well laser emitting over a range of 300 nm. IEEE Photonics Technology Letters ,

Abstract

We present a wavelength-tunable, external-cavity GaSb-based quantum-well laser operating near 3.2 μm. The laser setup consists of an intra-cavity grating in Littman-Metcalf configuration and a cascade pumped GaSb-based gain chip with a narrow-ridge waveguide. The narrow-ridge waveguide has a length of 2 mm and width of 7.5 μm. Cascade pumping is realized with three type-I quantum-wells, using one quantum-well per cascade stage. The laser provides continuous-wave output powers up to 8 mW and slope-efficiencies of 13 % at room temperature. Laser operation is demonstrated over a wavelength range of more than 300 nm, using continuous-wave and pulsed operation regimes.

Publication DOI: https://doi.org/10.1109/LPT.2018.2873049
Divisions: Engineering & Applied Sciences > Institute of Photonics
Engineering & Applied Sciences
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Full Text Link: https://ieeexpl ... cument/8478367/
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Published Date: 2018-10-01
Authors: Chichkov, Nikolai B.
Yadav, Amit
Zherebtsov, Evgeny ( 0000-0002-3635-1430)
Wang, Meng
Kipshidze, Gela
Belenky, Gregory
Shterengas, Leon
Rafailov, Edik U. ( 0000-0002-4152-0120)

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