Long wavelength VCSELs for advanced spectroscopic gas detection systems

• Research unit: INNOSUISSE
• Project number: 8714.2;5 PFNM-NM

Short description (English)

Long wavelength VCSELs for advanced spectroscopic gas detection systems

Short description (French)

Long wavelength VCSELs for advanced spectroscopic gas detection systems

Abstract (English)

The project will develop long wavelength (1200-2300nm) vertical cavity surface emitting lasers (VCSELs) with precisely controlled emission wavelength (± 1nm) for gas sensing applications. This will be accomplished using the localized wafer fusion technology developed by BeamExpress and EPFL, which allows nanometer-scale engineering of the VCSEL optical cavity and consequently nm precision in emission wavelength. The developed VCSELs will be employed in demonstrating gas sensing systems for selected molecules, namely, ammonia (1512nm absorption wavelength) and combustible gases (1686nm absorption wavelength), using the novel optical detection method developed at IR Microsystems.

Abstract (French)

The project will develop long wavelength (1200-2300nm) vertical cavity surface emitting lasers (VCSELs) with precisely controlled emission wavelength (± 1nm) for gas sensing applications. This will be accomplished using the localized wafer fusion technology developed by BeamExpress and EPFL, which allows nanometer-scale engineering of the VCSEL optical cavity and consequently nm precision in emission wavelength. The developed VCSELs will be employed in demonstrating gas sensing systems for selected molecules, namely, ammonia (1512nm absorption wavelength) and combustible gases (1686nm absorption wavelength), using the novel optical detection method developed at IR Microsystems.