Heating in a diamond-anvil cell using relaxation oscillations of a Q-switched Nd:YAG laser

Funamori, Nobumasa; Sato, Tomoko
September 2006
Review of Scientific Instruments;Sep2006, Vol. 77 Issue 9, p093903
Academic Journal
We have made a trial to utilize relaxation oscillations of a Nd:YAG laser as a light source for heating in a diamond-anvil cell. The peak power of the relaxation-oscillation pulses can be adjusted by controlling the on-off timing and the on-off degree (i.e., the intermediate state between on and off) of the Q switch of the laser. The peak width is inversely correlated to the peak power. The properties, such as peak power and peak width, of the relaxation-oscillation pulses are intermediate between those of normal Q-switched pulses and continuous waves. Using the relaxation-oscillation pulses, we have succeeded in heating a sample under conditions where it could not be heated by continuous waves and have also succeeded in making a time-resolved measurement of the thermal-radiation light emitted from the heated sample, which could not be made with normal Q-switched pulses.


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