Title :
Linewidth enhancement factor of quantum cascade lasers with single phonon resonance-continuum depopulation structure on Peltier cooler
Author :
Ishihara, Manabu ; Morimoto, Takuya ; Furuta, S. ; Kasahara, K. ; Akikusa, N. ; Fujita, Kinya ; Edamura, T.
Author_Institution :
Dept. of Photonics, Ritsumeikan Univ., Kusatsu, Japan
fDate :
11/1/2009 12:00:00 AM
Abstract :
The linewidth enhancement factor (alpha-factor) of a commercially available 6.1 mum InGaAs/InAlAs distributed-feedback quantum cascade laser capable of continuous-wave operation with a Peltier cooler and its current dependence were investigated. alpha tended to increase slowly with an increase in current. alpha, probably affected by detuning, was still smaller than that of conventional 1.55 mum semiconductor laser diodes.
Keywords :
III-V semiconductors; Peltier effect; aluminium compounds; distributed feedback lasers; gallium arsenide; indium compounds; quantum cascade lasers; InGaAs-AlGaAs; Peltier cooler; alpha-factor; distributed feedback laser; linewidth enhancement factor; quantum cascade lasers; single phonon resonance-continuum depopulation structure; wavelength 6.1 mum;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2009.2782
