Title :
Continuously tunable singlemode VECSEL at 3.3μm wavelength for spectroscopy
Author :
Rahim, Mohamed ; Khiar, A. ; Fill, M. ; Felder, F. ; Zogg, H.
Author_Institution :
Thin Film Phys. Group, ETH Zurich, Zürich, Switzerland
Abstract :
A singlemode tunable vertical external cavity surface emitting laser (VECSEL) has been realised. The VECSEL can be tuned continuously over more than 80 nm from ~3.22 to 3.3μm wavelength. Tuning is performed by changing the cavity length with a piezoelectric driver. Covering this wavelength range allows various potential applications, especially for gas spectroscopy of organic compounds. The VECSEL is optically pumped, and emits a maximum output power of 20 mWp when cooled with a Peltier element to -20-°C. The active medium consist of PbSe quantum wells embedded in Pb1-xSrxSe (x=0.08) barrier layers and is grown on a Si-substrate.
Keywords :
IV-VI semiconductors; Peltier effect; integrated optics; laser cavity resonators; laser modes; laser tuning; lead compounds; optical pumping; quantum well lasers; spectroscopy; strontium compounds; surface emitting lasers; PbSe-Pb1-xSrxSe; Peltier element; Si; Si-substrate; barrier layers; cavity length; continuously tunable singlemode VECSEL; gas spectroscopy; laser output power; optical pumping; organic compounds; piezoelectric driver; quantum wells; temperature -20 degC; vertical external cavity surface emitting laser; wavelength 3.3 mum; wavelength tuning;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2011.2201
