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Proceedings Paper

Near-diffraction-limited excimer laser beam from a XeCl POPA system
Author(s): Sarah Bollanti; Paolo Di Lazzaro; Francesco Flora; Gualtiero Giordano; Tommaso Letardi; Daniele Murra; C. Petrucci; Giovanni Schina; Olivier P. Uteza; Cheng En Zheng
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Paper Abstract

We present the results of a compact three-electrode XeCl laser operated in a power oscillator-power amplifier (POPA) configuration with transverse mode selection. The smaller of two laser heads is an oscillator, equipped with a generalized self-filtering unstable resonator (GSFUR). The oscillator output beam has an energy of 9 mJ in a 75 ns FWHM pulse and is only 1.1 times over its diffraction limit. The single-pass amplified beam has an output energy of 90 mJ in a pulse 85 ns long and, with a times diffraction limit (TDL) equal to 1.6, reaches a brightness of 3 (DOT) 1014 Wcm-2ster-1. Operating the laser at low repetition rate (1 Hz), the beam pointing stability (BPS) of both oscillator and amplifier output beams has been measured. The angular fluctuations of the focused beams are each within 1/6 of their own total beam divergence.

Paper Details

Date Published: 26 August 1996
PDF: 8 pages
Proc. SPIE 2788, High-Power Lasers: Gas and Solid State Lasers, (26 August 1996); doi: 10.1117/12.248600
Show Author Affiliations
Sarah Bollanti, ENEA (Italy)
Paolo Di Lazzaro, ENEA (Italy)
Francesco Flora, ENEA (Italy)
Gualtiero Giordano, ENEA (Italy)
Tommaso Letardi, ENEA (Italy)
Daniele Murra, ENEA (Italy)
C. Petrucci, ENEA (Italy)
Giovanni Schina, ENEA (Italy)
Olivier P. Uteza, ENEA (Italy)
Cheng En Zheng, ENEA (Italy)

Published in SPIE Proceedings Vol. 2788:
High-Power Lasers: Gas and Solid State Lasers
Tommaso Letardi; Horst Weber, Editor(s)

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