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Proceedings Paper

Multipulse passively Q-switched Nd:YAG laser for material surface cleaning
Author(s): Constantin G. Fenic; Aurel Stratan; Razvan V. Dabu; Ion N. Mihailescu; Constantin Blanaru; Constantin Ungureanu
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Paper Abstract

A flash-lamp pumped Nd:YAG laser with confocal unstable resonator and super-Gaussian output mirror, multi-pulse passively Q- switched employing Cr4+:YAG and LiF:F2 crystals with small-signal absorption in the 22-82% range, has been developed. At 49 J energy and 1 Hz repetition rate of the pump pulses, using a passive shutter with 37% initial transmission, a train of 12-13 pulses, separated by more than 8 microseconds, with average 52 mJ single pulse energy and 20 ns pulse-width, were measured. Under these conditions, the laser intensity at the optical fiber input face is under the fiber damage level, but output power density is high enough to reach the ablation threshold of various pollution layers deposited on the material surface.

Paper Details

Date Published: 9 August 2002
PDF: 6 pages
Proc. SPIE 4762, ALT'01 International Conference on Advanced Laser Technologies, (9 August 2002); doi: 10.1117/12.478628
Show Author Affiliations
Constantin G. Fenic, National Institute for Lasers, Plasma, and Radiation Physics (Romania)
Aurel Stratan, National Institute for Lasers, Plasma, and Radiation Physics (Romania)
Razvan V. Dabu, National Institute for Lasers, Plasma, and Radiation Physics (Romania)
Ion N. Mihailescu, National Institute for Lasers, Plasma, and Radiation Physics (Romania)
Constantin Blanaru, National Institute for Lasers, Plasma, and Radiation Physics (Romania)
Constantin Ungureanu, National Institute for Lasers, Plasma, and Radiation Physics (Romania)


Published in SPIE Proceedings Vol. 4762:
ALT'01 International Conference on Advanced Laser Technologies

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