Electrical calibration of high intensity laser energy's measuring

As the development of inertial confinement fusion (ICF) driver, the aperture of laser beam increases gradually, and the energy need to be measured precisely. However, the present calibration method doesn't satisfy the measuring precision degree (with uncertainty not greater than 2%). A new electrical calibration method of high intensity laser calorimeters is presented. Semiconductors consisting of Bi 2Te 3-Sb 2Te 3 are used as energy converting devices. Research on calorimeters' calibration which uses electrical energy to substitute the laser energy has been done. Thermal model of volume-absorbing glass under pulsed-laser heating and electrical heating has been developed. Results show that, electrical heating and laser heating are equivalent in ambient thermodynamics models. Some experimental results have been obtained, which demonstrate the feasibility of the electrical heating's application.