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Title: Correlation between measured voltage and observed wavelength in commercial AlGaInP laser diode

Temperature of a commercial AlGaInP/GaInP quantum well laser diode (LD) is measured using two methods: peak wavelength shift and the diode voltage drop caused by working current. Time evolutions of temperature obtained by the two methods during the LD self-heating are measured and compared. No significant difference between the thus obtained temperature evolutions is obtained. Correlation between the LD voltage drop and the laser radiation frequency is established using a simple four-level semiconductor laser scheme and the LD gap energy is estimated. The LD gap energy decreases from 1.66 eV to 1.56 eV for temperature increase of 21 K, at close to room temperature. It is found that LD's frequency decrease is caused by the gap energy decrease.
Authors:
; ; ;  [1]
  1. Faculty of Physics, University of Belgrade, 11000 Belgrade (Serbia)
Publication Date:
OSTI Identifier:
22275823
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 18; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; ALUMINIUM COMPOUNDS; COMPARATIVE EVALUATIONS; CORRELATIONS; ELECTRIC CURRENTS; ELECTRIC POTENTIAL; ENERGY GAP; GALLIUM COMPOUNDS; HETEROJUNCTIONS; INDIUM PHOSPHIDES; LASER RADIATION; QUANTUM WELLS; SEMICONDUCTOR LASERS; VOLTAGE DROP