Discharge Initiated High Power Repetitively Pulsed Hf/Df Laser
XX INTERNATIONAL SYMPOSIUM ON HIGH-POWER LASER SYSTEMS AND APPLICATIONS 2014(2015)
Abstract
The design and performance of a closed cycle, repetitively pulsed HF/DF laser is described. For obtained higher stable laser pulse energy and running frequency, discharge stability with different electrode profile and different gas circulation structure are researched. The functional relations of laser pulse energy with electric field strength (E) and gas mixture pressure (P) for various gas flow velocity are studied. It is shown that with preliminary optimized of the gas injection segment structure before pump region and optimal E/P conditions, maximal running frequency of 100Hz is obtained and operating stability keeps well. Under these conditions, the laser average power is 40W and peak power is 4MW.
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Key words
pulsed HF/DF laser, discharge initiated, repetition-rate, discharge stability, gas circulation
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