Single switch as a driver of two-repetition-rate lasers

Dhruba J. Biswas; J. Padma Nilaya; Udit Chatterjee

doi:10.1117/1.601231

1 February 1997 Single switch as a driver of two-repetition-rate lasers

Dhruba J. Biswas, J. Padma Nilaya, Udit Chatterjee

Optical Engineering, Vol. 36, Issue 2, (February 1997). https://doi.org/10.1117/1.601231

Generation of two synchronized high-voltage discharges at a 200-Hz repetition rate by rotating a suitably configured circular dielectric plate between two pairs of spark gap electrodes is reported. The delay between the discharges could be varied from less than a microsecond to more than a millisecond by locating the electrodes of the spark gaps judiciously with respect to the passing holes of the dielectric plate. The performance of the device has been tested by switching a total of 2.5 kW power on two identical dummy loads resembling a typical transversely excited (TE) laser in terms of resistance. Operation of the switch in the triggered mode has been achieved by use of an optical sensor. The test on a real transversely excited atmosphere (TEA) CO2 laser load was limited to a 50-Hz repetition rate. Inadequate cooling of the laser gas mixture and the accumulation of discharge products led to arcing beyond this pulse repetition frequency.

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Dhruba J. Biswas, J. Padma Nilaya, and Udit Chatterjee "Single switch as a driver of two-repetition-rate lasers," Optical Engineering 36(2), (1 February 1997). https://doi.org/10.1117/1.601231

Published: 1 February 1997

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