Characteristics of a CO<sub>2</sub>laser excited by a capacitative ac discharge

Glova, A F; Голубев, В. С.; Кузнецов, А. Б.; Lebedev, F. V.; Feofilaktov, V. A.

doi:10.1070/qe1979v009n03abeh008776

Cited by 5 publications

(1 citation statement)

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“…But the majority of transverse flow CO 2 lasers have been using of the three-phase power frequency SCR source, which is bulky, heavy and inefficient. With the rapid development of recent electronic technology and laser technology, it is the trend that the SCR power will be replaced by the switching power supply [1] . Switching power supply can avoid the instability caused by the frequency modulation mode feedback form to achieve a higher stability.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of CW/pulse discharge for high power transverse flow CO 2 laser and its application

et al. 2007

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Aiming at the 3kW transverse flow CO 2 laser, a hybrid power system and its compatibility with pin-to-flat discharge structure has been studied in the paper, CW/pulse output laser has been obtained. The DC high voltage output consists of switching power supply and main transformer, and three-phase SCR power supply is replaced by switching power supply. The pulse parameters are frequency from 0Hz to 1kHz, duty ratio from 0% to 100%. The pulse waveform of discharge voltage and discharge current are measured. The results show that row resistances have been moved, pin resistances have been reduced to 10kΩ. When the pressure P is 8.45kPa, the highest efficiency of electric-photo conversion of laser is up to 14.8%.The laser output power can be modulated in the state of continuous and pulse at arrange of 3kW. Then particular laser cladding is performed on the airplane engine blade, the laser cladding crack produced in continuous state is solved, and the heat-affected zone of laser cladding is also narrowed

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Section: Introductionmentioning

confidence: 99%