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25 April 2017 Al0.45Ga0.55As / GaAs -based single-mode distributed-feedback quantum-cascade lasers with surface gratings
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Abstract
Conditions of fabrication of first-order distributed-feedback surface gratings designed for single-mode Al 0.45 Ga 0.55 As / GaAs quantum cascades lasers with the emission wavelength of about 10    μ m are presented. The 1 - μ m -deep rectangular-shaped gratings with the period of about 1.55    μ m and duty cycle in the range of 65% to 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 to 25    μ m . 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 to 120 K. The full width at half maximum of the emitted spectra is 0.4    cm 1 .
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Anna Szerling, Anna Szerling, Renata Kruszka, Renata Kruszka, Kamil Kosiel, Kamil Kosiel, Marek Wzorek, Marek Wzorek, Krystyna Gołaszewska, Krystyna Gołaszewska, Artur Trajnerowicz, Artur Trajnerowicz, Piotr Karbownik, Piotr Karbownik, Maciej Kuc, Maciej Kuc, Tomasz G. Czyszanowski, Tomasz G. Czyszanowski, Michał J. Walczakowski, Michał J. Walczakowski, Norbert Pałka, Norbert Pałka, } "Al0.45Ga0.55As / GaAs -based single-mode distributed-feedback quantum-cascade lasers with surface gratings," Journal of Nanophotonics 11(2), 026004 (25 April 2017). https://doi.org/10.1117/1.JNP.11.026004 . Submission: Received: 27 February 2017; Accepted: 7 April 2017
Received: 27 February 2017; Accepted: 7 April 2017; Published: 25 April 2017
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