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Proceedings Paper

SESAM designs for ultrafast lasers
Author(s): Clara J. Saraceno; Cinia Schriber; Mario Mangold; Martin Hoffmann; Oliver H. Heckl; Cyrill R. E. Baer; Matthias Golling; Thomas Südmeyer; Ursula Keller
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Paper Abstract

The invention of the semiconductor saturable absorber mirror (SESAM) nearly 20 years ago was a major advancement for the development of ultrafast laser systems. Today, SESAMs have become key devices for modelocking of numerous laser types, including DPSSLs, fiber lasers, and semiconductor lasers. Semiconductors are ideally suited as saturable absorbers because they can cover a broad wavelength range and yield short recovery times, supporting the generation of picosecond to femtosecond pulse durations. The macroscopic nonlinear optical parameters for modelocking can be optimized over a wide range by the design of the mirror structure and the choice of the semiconductor absorber. Furthermore, their damage threshold can be controlled making them ideally suited for high-power levels. In this presentation, we will focus on recent advances in SESAMs for cutting-edge ultrafast lasers. In particular, we will focus on recent damage and lifetime investigations of SESAMs designed for high-power oscillators. We will present guidelines for robust SESAMs in a large range of saturation parameters, and give an outlook towards novel SESAM designs that will enable future kW-level ultrafast oscillators.

Paper Details

Date Published: 26 February 2013
PDF: 7 pages
Proc. SPIE 8601, Fiber Lasers X: Technology, Systems, and Applications, 86010Q (26 February 2013); doi: 10.1117/12.2008499
Show Author Affiliations
Clara J. Saraceno, ETH Zurich (Switzerland)
Cinia Schriber, ETH Zurich (Switzerland)
Mario Mangold, ETH Zurich (Switzerland)
Martin Hoffmann, ETH Zurich (Switzerland)
Oliver H. Heckl, ETH Zurich (Switzerland)
Cyrill R. E. Baer, ETH Zurich (Switzerland)
Matthias Golling, ETH Zurich (Switzerland)
Thomas Südmeyer, ETH Zurich (Switzerland)
Univ. of Neuchatel (Switzerland)
Ursula Keller, ETH Zurich (Switzerland)


Published in SPIE Proceedings Vol. 8601:
Fiber Lasers X: Technology, Systems, and Applications
Sami T. Hendow, Editor(s)

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