High resolution absolute temperature mapping of laser crystals in diode-end-pumped configuration

Beitrag in einer Fachzeitschrift
(Report)


Details zur Publikation

Autorinnen und Autoren: Didierjean J, Forget S, Chenais S, Balembois F, Georges P, Altmann K, Pflaum C
Zeitschrift: Proceedings of SPIE
Verlag: International Society for Optical Engineering; 1999
Jahr der Veröffentlichung: 2005
Band: 5707
Seitenbereich: 370--379
ISSN: 0277-786X


Abstract


We report on direct, absolute and spatially resolved temperature measurements in various diode-end-pumped laser crystals, using an infrared camera. Our measurement method requires careful calibrations of the camera, to take into account the emissivity of the crystals. We tested the repeatability of the calibration process, and the linearity of calibrations curves was verified to up to 100°C. We obtained good agreement between experimental results and finite elements analysis simulations done with LASCAD. We also studied and compared different types of thermal contacts and to measure the corresponding heat transfer coefficients using an Yb:YAG crystal. Finally we tried to highlight one of the major controversy concerning the comparison of the thermal behaviours of Nd: YVO4 and Nd:GdVO4 crystals.



FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Pflaum, Christoph Prof. Dr.
Professur für Informatik (Numerische Simulation mit Höchstleistungsrechnern)

Zuletzt aktualisiert 2019-17-01 um 16:38