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Series
in Quantum Electronics
edited
by
Henry Baltes, Peter Günter, Ursula Keller,
Fritz K. Kneubühl †, Walter Lukosz,
Hans Melchior, Markus W. Sigrist
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Vol. 64 Alexander Klenner, Gigahertz frequency combs from
high-power diode-pumped solid-state lasers 1st edition 2015. XXII, 128 pages, € 64,00. ISBN 978-3-86628-537-8 |
Self-referenced optical frequency combs
allow the characterization of optical frequencies with highest precision and
provide the basis for optical metrology with applications such as optical
clocks. An excellent laser technology for gigahertz frequency combs is
diode-pumped solid-state lasers. This thesis describes the most recent research
on the development of very compact, reliable and cost-effective gigahertz
ultrafast lasers and the stabilization of novel high-power frequency combs.
The diode-pumped gigahertz solid-state
lasers, presented in this thesis, represent the state-of-the-art with more than
20 kW of peak power and pulse durations of sub-60 fs. This new generation of
stable high-power femtosecond gigahertz lasers was enabled by combining multiple
key elements: robust SESAM modelocking, the novel
gain material Yb:CaGdAlO4, reliable
high-power diode-pumping and an all-optical Q-switching limiter.
The high potential of diode-pumped solid-state
lasers for high-power frequency combs was demonstrated by two groundbreaking
experiments: the first carrier-envelope-offset (CEO)-stabilization of a SESAM-modelocked thin disk laser and the first CEO-stabilization
of a diode-pumped gigahertz laser. These research results mark milestones for
frequency combs with unprecedented power per comb line and pave the way for the
next generation of compact and reliable laser frequency combs.
About the author:
Alexander Klenner graduated in 2010 with a diploma in physics from the Freie Universität Berlin, Germany
working on laser-assisted manipulation of molecules. He joined the Institute
for Quantum Electronics at the Swiss Federal Institute of Technology in Zurich,
Switzerland in 2011. His research focuses on ultrafast solid-state lasers in
particular with gigahertz repetition rate, optical frequency combs and
frequency metrology. He has written or co-authored more than 40 scientific
journal articles and conference contributions.
Keywords: ultrafast semiconductor lasers,
VECSELs, diode-pumped gigahertz solid-state lasers, robust SESAM modelocking, novel gain material Yb:CaGdAlO4,
reliable high-power diode-pumping, all-optical Q-switching limiter
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