Published June 2020 | Version v1
Journal article

Study of the Spectra of Arched-Cavity Quantum-Cascade Lasers

  • 1. Ioffe Institute (Russian Federation)
  • 2. Center for Physical Sciences and Technology (Lithuania)
  • 3. Peter the Great St. Petersburg Polytechnic University (Russian Federation)
  • 4. St. Petersburg Electrotechnical University "LETI" (Russian Federation)
  • 5. ITMO University (Russian Federation)
  • 6. Connector Optics LLC (Russian Federation)

Description

The temperature characteristics of arched-cavity quantum-cascade lasers with different geometrical dimensions emitting in the spectral range of 7–8 μm are studied. The laser heterostructure was grown by molecular-beam epitaxy. The active region consisted of 50 cascades based on a heteropair of In0.53Ga0.47As/Al0.48In0.52As solid alloys. Single-mode lasing is demonstrated for lasers with the semicircular cavity segment 100 μm in diameter and the linear segment 1 mm long. The maximum side-mode suppression ratio at a temperature of 290 K was 26 dB, and the emission wavelength was 7.73 μm.

Additional details

Identifiers

Publishing Information

Journal Title
Optics and Spectroscopy
Journal Volume
128
Journal Issue
6
Journal Page Range
p. 702-706
ISSN
0030-400X
CODEN
OPSUA3

Optional Information

Copyright
Copyright (c) 2020 © Pleiades Publishing, Ltd. 2020