Direct and absolute temperature mapping and heat transfer measurements in diode-end-pumped Yb:YAG

Sébastien Chenais (1) , Sébastien Forget (1) , Frédéric Druon (1) , François Balembois (1) , Patrick Georges (1)

1 Laboratoire Charles Fabry de l'Institut d'Optique / Elsa

We report direct and absolute temperature measurements in a diode-end-pumped Yb:YAG crystal, using a calibrated infrared camera, with a 60-µm spatial resolution. The heat transfer coefficient has been measured, for the first time to our knowledge, with four different types of thermal contact (H = 0.25, 0.28, 0.9 and 2.0 for bare contact, graphite layer, indium foil and heat sink grease respectively). The dynamics of thermal effects is also presented.

Mots clés: thermal measurements; diode-pumped laser

Domaines: Optique [physics.optics]

Sébastien Chenais, Sébastien Forget, Frédéric Druon, François Balembois, Patrick Georges. Direct and absolute temperature mapping and heat transfer measurements in diode-end-pumped Yb:YAG. Applied Physics B - Laser and Optics, 2004, 79, pp.221-224. ⟨hal-00105108⟩