Pulse Compression of CO2 laser in SF6 and it's Mixtures with Dymel Gas
Abstract
Laser pulse compression using OFID in ammonia, and CH3F gases has been reported in the past. Recent work in dymel gas indicated a four times sharper pulse than that in vacuum [1]. In the present work, experiments were conducted in SF6 gas to investigate the possibility of an OFID effecting a compressed CO2 laser pulse. An average of fourty laser pulses was acquired at a typical gas pressure in the test cell. Pressure of SF6 was varied from 0 to 2.5 torr while that of dymel (in a mixture with SF6) was varied from 0 to 6 torr. Pressure of SF6 was limited to a maximum of 2.5 torr due to strong absorption leading to weakening of output pulse. Results indicate that the addition of SF6 to dymel led to a variation in sharpness (intensity divided by pulsewidth) of a pulse and also to a shift in pressure at which maximum compression in dymel normally occurs. [1]D. Yi, and S.Mahajan,"Pulse Compression of CO2 laser by Optical Free Induction decay (OFID) Effect, Bulletin of APS,Vol.47,No.7,October 2002,pp.27,
- Publication:
-
APS Annual Gaseous Electronics Meeting Abstracts
- Pub Date:
- October 2003
- Bibcode:
- 2003APS..GECSRP041Y