Share Email Print

Optical Engineering

Single switch as a driver of two-repetition-rate lasers
Author(s): Dhruba J. Biswas; J. Padma Nilaya; Udit Chatterjee
Format Member Price Non-Member Price
PDF $20.00 $25.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

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.

Paper Details

Date Published: 1 February 1997
PDF: 5 pages
Opt. Eng. 36(2) doi: 10.1117/1.601231
Published in: Optical Engineering Volume 36, Issue 2
Show Author Affiliations
Dhruba J. Biswas, Bhabha Atomic Research Ctr. (India)
J. Padma Nilaya, Bhabha Atomic Research Ctr. (India)
Udit Chatterjee, Bhabha Atomic Research Ctr. (India)

© SPIE. Terms of Use
Back to Top