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Beam profile monitor for pulsed CO2-laser

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2 Author(s)
Kowalewicz, R. ; Dept. of Phys., Erlangen-Nurnberg Univ., Germany ; Eberl, E.

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

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Plasma Science, IEEE Transactions on  (Volume:24 ,  Issue: 1 )