Title :
Broad continuous tunable range with single frequency Sb-based external-cavity VCSEL emitting in MIR
Author :
Ouvrard, A. ; Cerutti, L. ; Garnache, A.
Author_Institution :
LPPM, Univ. Paris Sud, Paris
Abstract :
A large tunable single frequency Sb-based VeCSEL emitting at 2.3 mum for spectroscopy applications has been developed. The gain tuning was studied in order to achieve laser operation over a broad continuous tunability. A 224 GHz mode hop free tuning range has been achieved. Compact 4 15 mm long diode-pumped VeCSELs were developed, with few milliwatts of output power and a narrow laser linewidth. It is demonstrated that thermally induced gain tuning, through the change of the spatial laser-pump overlapping during the cavity length modulation, explains the large tuning range observed.
Keywords :
antimony; infrared spectroscopy; laser cavity resonators; laser tuning; measurement by laser beam; optical modulation; optical pumping; semiconductor lasers; surface emitting lasers; thermo-optical effects; MIR spectral range; SbJkJk; broad continuous tunable range; cavity length modulation; diode-pumped VCSEL; frequency 224 GHz; hop free tuning range; laser linewidth; laser spectroscopy; laser tunability; single frequency external-cavity VCSEL; size 4 mm to 15 mm; spatial laser-pump; thermally induced gain tuning; wavelength 2.3 mum;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2009.0503
