%0 Journal Article %T Thermal characterization of a nematic liquid crystal suited for the fabrication of NIR spectrally-tunable vertical cavity surface emitting lasers %+ Équipe MICrosystèmes d'Analyse (LAAS-MICA) %+ Service Techniques et Équipements Appliqués à la Microélectronique (LAAS-TEAM) %+ Institut FRESNEL (FRESNEL) %+ RCMO (RCMO) %+ Department of Electronics and Telecommunications = DET Dipartimento di Elettronica e Telecomunicazioni [Politecnico di Torino] (DET) %+ Istituto di Elettronica e di Ingegneria dell'Informazione e delle Telecomunicazioni (IEIIT) %A Simaz, Andrea %A Boisnard, Benjamin %A Doucet, Jean-Baptiste %A Camps, Thierry %A Reig, Benjamin %A Lumeau, Julien %A Begou, Thomas %A Tibaldi, Alberto %A Debernardi, Pierluigi %A Bardinal, Véronique %< avec comité de lecture %Z Rapport LAAS n° 22120 %@ 2159-3930 %J Optical Materials Express %I OSA pub %V 12 %N 2 %P 383-391 %8 2022-02 %D 2022 %R 10.1364/OME.445217 %Z Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] %Z Engineering Sciences [physics]/Optics / PhotonicJournal articles %X In this work, the thermo-optical properties of a nematic liquid crystal are determined through reflectance measurements performed on a high finesse tunable filter fabricated using a polymer-based microcell technology. The final aim is to insert such material in the optical cavity of a 850 nm tunable VCSEL device, in which local self-heating due to CW pumping must be taken into account. These localized interferometric experiments are performed in the near-infra-red range and at temperatures up to 115 °C. A thermal model is derived from the acquired data. Finally, we demonstrate that the birefringence of QYPDLC-36 liquid crystal remains higher than 0.18 at 60 °C, feature well suited to real device operation. %G English %2 https://hal.laas.fr/hal-03639738/document %2 https://hal.laas.fr/hal-03639738/file/ome-12-2-383.pdf %L hal-03639738 %U https://hal.laas.fr/hal-03639738 %~ UNIV-TLSE2 %~ UNIV-TLSE3 %~ CNRS %~ UNIV-AMU %~ INSA-TOULOUSE %~ IF %~ LAAS %~ EC-MARSEILLE %~ UT1-CAPITOLE %~ LAAS-MICA %~ LAAS-TEAM %~ LAAS-MICRO-NANO-BIO-TECHNOLOGIES %~ INSA-GROUPE %~ ANR %~ TOULOUSE-INP %~ UNIV-UT3 %~ UT3-INP %~ UT3-TOULOUSEINP