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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, Renata Kruszka, Kamil Kosiel, Marek Wzorek, Krystyna Gołaszewska, Artur Trajnerowicz, Piotr Karbownik, Maciej Kuc, Tomasz G. Czyszanowski, Michał J. Walczakowski, 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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