Al0.45Ga0.55As/GaAs-based single-mode distributed-feedback quantum-cascade lasers with surface gratings

Anna Szerling; Renata Kruszka; Kamil Kosiel; Marek Wzorek; Krystyna Gołaszewska; Artur Trajnerowicz; Piotr Karbownik; Maciej Kuc; Tomasz Czyszanowski; Michał Walczakowski; Norbert Palka

doi:10.1117/12.2252791

20 February 2017 Al_0.45Ga_0.55As/GaAs-based single-mode distributed-feedback quantum-cascade lasers with surface gratings

Anna Szerling, Renata Kruszka, Kamil Kosiel, Marek Wzorek, Krystyna Gołaszewska, Artur Trajnerowicz, Piotr Karbownik, Maciej Kuc, Tomasz Czyszanowski, Michał Walczakowski, Norbert Palka

Author Affiliations +

Proceedings Volume 10123, Novel In-Plane Semiconductor Lasers XVI; 101231M (2017) https://doi.org/10.1117/12.2252791
Event: SPIE OPTO, 2017, San Francisco, California, United States

Abstract

Conditions of fabrication of first order distributed-feedback surface gratings designed for single-mode Al_0.45Ga_0.55As/GaAs quantum cascades lasers with the emission wavelength of about 10μm are presented. The 1 μm-deep rectangular-shaped gratings with the period of about 1.55 μm and duty cycle in the range of 65-71% made by the standard photolithography are demonstrated. The wavenumber difference of about 7 cm^-1 at 77 K is observed for the radiation emitted by lasers fabricated from the same epitaxial structure with ridge widths in the range of 15-25 μm. Moreover, the emission wavelength of the lasers could be tuned with temperature at a rate of 1 nm/K in the temperature range of 77-120 K. The full width at half maximum of the emitted spectra is ~ 0.4 cm^-1.

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Anna Szerling, Renata Kruszka, Kamil Kosiel, Marek Wzorek, Krystyna Gołaszewska, Artur Trajnerowicz, Piotr Karbownik, Maciej Kuc, Tomasz Czyszanowski, Michał Walczakowski, and Norbert Palka "Al_0.45Ga_0.55As/GaAs-based single-mode distributed-feedback quantum-cascade lasers with surface gratings", Proc. SPIE 10123, Novel In-Plane Semiconductor Lasers XVI, 101231M (20 February 2017); https://doi.org/10.1117/12.2252791

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