Laser characteristics of an injection microdisk with quantum dots and its free-space outcoupling efficiency

The spectral, threshold, and power characteristics of a microdisk laser 31 μm in diameter with an active region based on InAs/InGaAs quantum dots, operating in the continuous-wave (cw) mode at room temperature are studied. The minimum threshold current density is 0.58 kA/cm 2 , the subthreshold line...

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Veröffentlicht in:	Semiconductors (Woodbury, N.Y.) N.Y.), 2016-10, Vol.50 (10), p.1408-1411
Hauptverfasser:	Zubov, F. I., Kryzhanovskaya, N. V., Moiseev, E. I., Polubavkina, Yu. S., Simchuk, O. I., Kulagina, M. M., Zadiranov, Yu. M., Troshkov, S. I., Lipovskii, A. A., Maximov, M. V., Zhukov, A. E.
Format:	Artikel
Sprache:	eng
Schlagworte:	Active regions (lasers) Atoms Continuous radiation CURRENT DENSITY ENERGY EFFICIENCY GALLIUM ARSENIDES INDIUM ARSENIDES LASERS LINE WIDTHS Magnetic Materials Magnetism MATERIALS SCIENCE Physics Physics and Astronomy Physics of Semiconductor Devices QUANTUM DOTS Radiation (Physics) Room temperature TEMPERATURE RANGE 0273-0400 K THRESHOLD CURRENT Threshold currents
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Zusammenfassung:	The spectral, threshold, and power characteristics of a microdisk laser 31 μm in diameter with an active region based on InAs/InGaAs quantum dots, operating in the continuous-wave (cw) mode at room temperature are studied. The minimum threshold current density is 0.58 kA/cm 2 , the subthreshold linewidth of the whispering-gallery mode is 50 pm at a wavelength lying in the range of 1.26–1.27 μm. The total power emitted into free space reaches ~0.1 mW in the cw mode, whereas the radiation power of the whispering-gallery modes is ~2.8%.
ISSN:	1063-7826 1090-6479
DOI:	10.1134/S1063782616100250