Abstract
Current-tunable diode lasers with narrow emission lines for laser spectroscopy in the 3.2–3.4 µm wavelength range are developed. The lasers, based on an InAsSb/InAsSbP double heterostructure, have a wide-stripe cavity. The wave number increases from 3030 to 3034 cm−1 as the current is raised from 1.5 to 3 times the threshold value at 70 K, while the full width at half-maximum of the laser line decreases from 18 to 10 MHz. It is demonstrated that the linewidth is determined by fluctuations of the cavity resonance frequencies as a result of fluctuations in the concentration of nonequilibrium charge carriers.
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Translated from Fizika i Tekhnika Poluprovodnikov, Vol. 35, No. 3, 2001, pp. 375–379.
Original Russian Text Copyright © 2001 by Imenkov, Kolchanova, Kubat, Moiseev, Civiš, Yakovlev.
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Imenkov, A.N., Kolchanova, N.M., Kubat, P. et al. Current-tunable lasers with a narrow emission line operating at 3.3 µm. Semiconductors 35, 360–364 (2001). https://doi.org/10.1134/1.1356163
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DOI: https://doi.org/10.1134/1.1356163