Journal
REVIEW OF SCIENTIFIC INSTRUMENTS
Volume 80, Issue 3, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3079698
Keywords
carbon compounds; gas lasers; optical elements; optical pulse shaping; plasma devices; plasma heating
Categories
Funding
- National Science Foundation
Ask authors/readers for more resources
The pulse from a transversely excited atmospheric CO2 laser consists of a sharp spike followed by a long, drawn out tail region spanning about 2-5 mu s caused by the nitrogen gas in the laser cavity. The nitrogen tail is undesirable in many applications because it decreases the average power of the laser pulse. We employ a pinhole plasma shutter for eliminating the nitrogen tail and shortening the pulse width. The pinhole shutter optically triggers plasma at a certain point in time with respect to the temporal profile of the laser pulse. This way, a good portion of the sharp spike is transmitted, while the energy stored in the nitrogen tail is consumed in heating the plasma. This simplistic plasma shutter is easy to build and inexpensive compared to other existing plasma shutter designs.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available