Dual-wavelength InP quantum dot lasers

Journal Article · Mon Jun 16 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4883857· OSTI ID:22299876

Shutts, S.; Smowton, P. M. ^[1]; Krysa, A. B. ^[2]

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1. School of Physics and Astronomy, Cardiff University, Cardiff CF24 3AA (United Kingdom)
2. EPSRC National Centre for III-V Technologies, Department of Electronic and Electrical Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD (United Kingdom)

We have demonstrated a two-section dual-wavelength diode laser incorporating distributed Bragg reflectors, with a peak-wavelength separation of 62.5 nm at 300 K. Each lasing wavelength has a different temperature dependence, providing a difference-tuning of 0.11 nm/K. We discuss the mechanisms governing the light output of the two competing modes and explain how the short wavelength can be relatively insensitive to output changes at the longer wavelength. Starting from an initial condition when the output at both wavelengths are equal, a 500% increase in the long wavelength output causes the short wavelength output to fall by only 6%.

• OSTI ID: 22299876
• Journal Information: Applied Physics Letters, Vol. 104, Issue 24; Other Information: (c) 2014 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
INDIUM PHOSPHIDES
QUANTUM DOTS
SEMICONDUCTOR LASERS
TEMPERATURE DEPENDENCE
TUNING
VISIBLE RADIATION
WAVELENGTHS