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 that, whereas standard LC E7 is not suited for real device operation, the maximal operating temperature of QYDPLC-36 LC is 95 °C, with a birefringence at 1.55μm higher than 0.18 at 60 °C.
Thermal Characterization of the Birefringence of Nematic Liquid Crystals for the Design of Widely-tunable LC-VCSELs / Simaz, Andrea; Boisnard, Benjamin; Camps, Thierry; Doucet, Jean-Baptiste; Reig, Benjamin; Tibaldi, Alberto; Debernardi, Pierluigi; Bardinal, Veronique. - ELETTRONICO. - (2020), pp. 73-74. (Intervento presentato al convegno 20th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD 2020) tenutosi a Online conference nel September 2020) [10.1109/NUSOD49422.2020.9217648].
Thermal Characterization of the Birefringence of Nematic Liquid Crystals for the Design of Widely-tunable LC-VCSELs
Tibaldi, Alberto;
2020
Abstract
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 that, whereas standard LC E7 is not suited for real device operation, the maximal operating temperature of QYDPLC-36 LC is 95 °C, with a birefringence at 1.55μm higher than 0.18 at 60 °C.File | Dimensione | Formato | |
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https://hdl.handle.net/11583/2848452