VCSEL study for gas sensing usage

Abstract

The studied VCSEL device structure had been manufactored at Ecole Polytechnique Fédérale de Lausanne, Laboratory of Physics of Nanostructures in the framework of the SCOPES project. The LIV characteristics of VCSEL chips had been created for a wider operating temperature range (5°C – 70°C) in order to determine the maximum output emission power and threshold current. The result demonstrates that the optimal temperature regime for a satisfactory functioning of VCSEL lasers represents the temperature values 30-40°C if taking into account the usage in gas sensors.