Spectral dependence of the linewidth enhancement factor in quantum dot lasers

Journal Article · Sun Dec 15 00:00:00 EST 2013 · Semiconductors

DOI:https://doi.org/10.1134/S1063782613120233· OSTI ID:22300415

Shernyakov, Yu. M.; Maximov, M. V. ^[1]; Zhukov, A. E. ^[2]; Livshits, D. A. ^[3]; Payusov, A. S.; Nadtochiy, A. M. ^[1]; Savelyev, A. V.; Kryzhanovskaya, N. V. ^[2]; Gordeev, N. Yu. ^[1]

---

1. Russian Academy of Sciences, Ioffe Physical-Technical Institute (Russian Federation)
2. Russian Academy of Sciences, St. Petersburg Academic University-Nanotechnology Research and Education Center (Russian Federation)
3. Innolume GmbH (Germany)

The spectral analysis of amplified spontaneous emission is used to determine the linewidth enhancement factor (α-factor) in lasers based on InAs/InGaAs quantum dots (QDs) in a wide spectral range near the ground-state optical transition energy. The effect of the pump current and number of QDs on the spectral dependences of the α-factor is examined. The temperature dependence of the spectra of the α-factor is experimentally determined for the first time for lasers with InAs/InGaAs QDs. An explanation is suggested for the observed anomalous decrease in the α-factor with increasing temperature.

• OSTI ID: 22300415
• Journal Information: Semiconductors, Vol. 47, Issue 12; Other Information: Copyright (c) 2013 Pleiades Publishing, Ltd.; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7826
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
EMISSION
GALLIUM ARSENIDES
GROUND STATES
INDIUM ARSENIDES
LASERS
QUANTUM DOTS
SPECTRA
TEMPERATURE DEPENDENCE