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Proceedings Paper

Fiber laser front ends for high-energy short pulse lasers
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Paper Abstract

We are developing an all fiber laser system optimized for providing input pulses for short pulse (1-10ps), high energy (~1kJ) glass laser systems. Fiber lasers are ideal solutions for these systems as they are highly reliable and once constructed they can be operated with ease. Furthermore, they offer an additional benefit of significantly reduced footprint. In most labs containing equivalent bulk laser systems, the system occupies two 4’x8’ tables and would consist of 10's if not a 100 of optics which would need to be individually aligned and maintained. The design requirements for this application are very different those commonly seen in fiber lasers. High energy lasers often have low repetition rates (as low as one pulse every few hours) and thus high average power and efficiency are of little practical value. What is of high value is pulse energy, high signal to noise ratio (expressed as pre-pulse contrast), good beam quality, consistent output parameters and timing. Our system focuses on maximizing these parameters sometimes at the expense of efficient operation or average power. Our prototype system consists of a mode-locked fiber laser, a compressed pulse fiber amplifier, a “pulse cleaner”, a chirped fiber Bragg grating, pulse selectors, a transport fiber system and a large flattened mode fiber amplifier. In our talk we will review the system in detail and present theoretical and experimental studies of critical components. We will also present experimental results from the integrated system.

Paper Details

Date Published: 22 April 2005
PDF: 8 pages
Proc. SPIE 5709, Fiber Lasers II: Technology, Systems, and Applications, (22 April 2005); doi: 10.1117/12.591147
Show Author Affiliations
Jay W. Dawson, Lawrence Livermore National Lab. (United States)
Zhi Liao, Lawrence Livermore National Lab. (United States)
Scott Mitchell, Lawrence Livermore National Lab. (United States)
Michael Messerly, Lawrence Livermore National Lab. (United States)
Raymond Beach, Lawrence Livermore National Lab. (United States)
Igor Jovanovic, Lawrence Livermore National Lab. (United States)
Curtis Brown, Lawrence Livermore National Lab. (United States)
Stephen Payne, Lawrence Livermore National Lab. (United States)
C. P. J. Barty, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 5709:
Fiber Lasers II: Technology, Systems, and Applications
L. N. Durvasula; Andrew J. W. Brown; Johan Nilsson, Editor(s)

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