Simaz A.

Univ Toulouse, CNRS, LAAS, Toulouse, France; Department of Electronics and Telecommunications, Politecnico di Torino, Turin, Italy


LD05–Optical Design Issues in Electrically Pumped Tunable Liquid-Crystal VCSELs

Simaz A., Tibaldi A., Boisnard B., Camps T., Bertazzi F., Goano M., Reig B., Doucet J. B., Bardinal V., Debernardi P.

In this work we investigate a tunable 850nm laser based on a hybrid combination of a liquid crystal micro-cell and a half GaAs VCSEL. The target application is optical coherence tomography. The inherent tolerances of the hybrid technology, the presence of metals in the cavity and the need for a pure extraordinary mode lasing make […]

LD07–Thermal Characterization of the Birefringence of Nematic Liquid Crystals for the Design of Widely-tunable LC-VCSELs

Simaz A., Boisnard B., Camps T., Doucet J. B., Reig B., Tibaldi A., Debernardi P., Bardinal V.

In this work, the thermo-optical properties of nematic liquid crystals are investigated through localized reflectance spectra measurements performed on a tunable LC-filter. The final aim is to insert such LC in the cavity of a tunable VCSEL device, in which local self-heating due to optical or electrical pumping must be taken into account. We demonstrate […]