Faculté des sciences

Spectral and modulation properties of a largely tunable MEMS-VCSEL in view of gas phase spectroscopy applications

Schilt, Stéphane ; Zogal, K. ; Kögel, B. ; Meissner, P. ; Maute, M. ; Protasio, R. ; Amann, M.-C.

In: Applied Physics B : Lasers and Optics, 2010, vol. 100, no. 2, p. 321-329

An extensive characterization of the spectral properties of a largely tunable laser in the 1.56-μm spectral range is reported. This device combines a vertical-cavity surface-emitting laser (VCSEL) with a micro-machined (MEMS) Bragg mirror in a very compact arrangement. The large tunability obtained by an electro-thermal actuation of the MEMS mirror makes this device very attractive for... Plus

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    Summary
    An extensive characterization of the spectral properties of a largely tunable laser in the 1.56-μm spectral range is reported. This device combines a vertical-cavity surface-emitting laser (VCSEL) with a micro-machined (MEMS) Bragg mirror in a very compact arrangement. The large tunability obtained by an electro-thermal actuation of the MEMS mirror makes this device very attractive for high-resolution spectroscopy. Relevant laser parameters for the implementation of wavelength modulation spectroscopy techniques in gas sensing, such as tuning and modulation properties, are presented. A preliminary gas spectroscopy experiment performed with this laser is also shown.