Direct and absolute temperature mapping and heat transfer measurements   in diode-end-pumped Yb:YAG
  We report direct and absolute temperature measurements in a diode-end-pumped Yb:YAG crystal, using a calibrated infrared camera, with a 60-$\mu$m 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. 
Sebastien Chenais (LCFIO), Sebastien Forget (LCFIO), Frederic Druon   (LCFIO), Francois Balembois (LCFIO), Patrick Georges (...