Title :
Singlemode quantum cascade lasers with power dissipation below 1 W
Author :
Hinkov, B. ; Bismuto, A. ; Bonetti, Y. ; Beck, M. ; Blaser, Sebastian ; Faist, J.
Author_Institution :
Inst. for Quantum Electron., ETH Zurich, Zürich, Switzerland
Abstract :
Presented are narrow-ridge, singlemode (λ=4.49 μm) quantum cascade lasers with low power consumption in continuous-wave operation. Episide up mounted 3 μm-wide and 1 mm-long devices with high-reflectivity backside coating show an electrical dissipation at laser threshold as low as 840 mW at 20°C. The devices can be tuned singlemode and mode-hop free between -30°C and -50°C and in a range of injected electrical power of 0.7 and 1.3 W with a sidemode suppression ratio better than 27 dB.
Keywords :
laser tuning; optical films; quantum cascade lasers; continuous wave operation; electrical dissipation; high reflectivity backside coating; laser threshold; mode-hop free lasers; power 0.8 W to 840 mW; power dissipation; sidemode suppression ratio; single mode quantum cascade lasers; size 1 mm; size 3 mum; temperature -30 degC to 50 degC; tuning; wavelength 4.49 mum;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2012.1204
