Title :
Surface-plasmon distributed-feedback mid-infrared quantum cascade lasers based on hybrid plasmon/air-guided modes
Author :
Bousseksou, A. ; Moreau, V. ; Colombell, R. ; Sirtori, C. ; Patriarche, G. ; Mauguin, O. ; Largeau, L. ; Beaudoin, G. ; Sagnes, I.
Author_Institution :
Inst. d´´Electron. Fondamentale, Univ. Paris Sud, Orsay
Abstract :
Surface-plasmon distributed-feedback quantum cascade lasers with a first-order grating realised by the sole patterning of the top metallic contact are demonstrated. The devices have a single-mode emission with a sidemode suppression ratio greater than 20 dB. The emission wavelength at 78 K is centred at 7.3 m and has a tuning rate as a function of temperature 0.4 nm/K.
Keywords :
diffraction gratings; distributed feedback lasers; laser modes; laser tuning; quantum cascade lasers; surface plasmons; distributed-feedback lasers; first-order grating; hybrid plasmon-air-guided modes; laser tuning; metallic contact; midinfrared quantum cascade lasers; sidemode suppression ratio; single-mode emission; sole patterning; surface-plasmon lasers; temperature 78 K;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20080756
