Title :
Beam profile monitor for pulsed CO2-laser
Author :
Kowalewicz, R. ; Eberl, E.
Author_Institution :
Dept. of Phys., Erlangen-Nurnberg Univ., Germany
fDate :
2/1/1996 12:00:00 AM
Abstract :
Commercial beam profile monitors for pulsed CO2 lasers (10.6 μm wavelength) are expensive and suffer from a low damage threshold. To overcome these problems, a robust detector with a high damage threshold was developed. The detector is made of a special type of graphite which is evaporated during the interaction with the laser beam. A plasma is formed which radiates visible light. Using a conventional fast shutter imaging system, this plasma light directly shows the spatial intensity distribution of the laser beam. The detector works in the power range of 105-107 W/cm2
Keywords :
carbon compounds; gas lasers; graphite; laser beams; laser variables measurement; plasma production by laser; 10.6 micrometre; CO2; beam profile monitor; fast shutter imaging system; graphite; high damage threshold; laser beam interaction; plasma; pulsed CO2-laser; spatial intensity distribution; visible light radiation; Detectors; Frequency; Laser beams; Monitoring; Particle beams; Plasma measurements; Plasma properties; Plasma temperature; Power lasers; Production;
Journal_Title :
Plasma Science, IEEE Transactions on
