The measured OPD results of thin-disk crystal and output characteristics of continuous wave laser

The instrument for measuring the maximum temperature of crystal surface under different pump power is fluke T400 thermal imager, where the surface emissivity is set to 0.9;Experimental measurement results of thermal induced OPD of crystal in 1.4mm measuring aperture under different pump power, and the wavefront sensor is Phasics SID4-GE; The relation curve between output power and pump power of CW laser. The slope efficiency is obtained by linear fitting and the near field of output spot is measured by CCD Ophir LT665 at about 1m of output mirror.