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Renate Gorre D-78465
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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
Vol. 57
Valentin J. Wittwer
New Frontiers of Ultrafast
Semiconductor Disk Lasers High Power
MIXSELs and Low Noise
VECSELs.
1st edition 2013. XXVI, 130 pages, € 64,00.
ISBN
978-3-86628-451-7
In this work, novel
achievements in the field of ultrafast semiconductor disk lasers (SDL) are
discussed. Using this highly promising technology, new frontiers and improved
results are outlined. First, power scaling to record high average output power
levels was achieved by utilizing our novel integrated ultrafast semiconductor
disk technology, the mode-locked integrated external cavity surface-emitting
laser (MIXSEL). It combines the two key elements of ultrafast SDLs, the
vertical external-cavity surface-emitting laser (VECSEL) and the semiconductor saturable absorber mirror (SESAM), in one single structure.
This absorber integration is possible, because both elements consist of
semiconductor layer stacks of the same material system. The full integration of
those mode-locked lasers is a very important step for making this technology
accessible to many applications, where other ultrafast lasers are too
expensive, complex, bulky, or fragile. In addition, an ultrastable
laser prototype was developed and fabricated, in order to investigate low-noise
performance of SESAM mode-locked VECSELs. We achieved the lowest timing jitter
ever reported for this kind of laser. The investigation of noise properties is
very important for the evaluation of the usability of such ultrafast laser
sources for applications that are sensitive to fluctuations in power or timing
of the emitted pulse train.
About the author:
Valentin J. Wittwer received
his diploma degree in physics in 2008 from ETH Zurich, Switzerland. He joined
the Ultrafast Laser Physics group in the Institute of Quantum Electronics at
ETH Zurich in the same year. His research interests focus on the development of
ultrafast semiconductor lasers in particular the integration of the saturable absorber and the construction and characterization
of oscillators with low timing-jitter. He has written or co-authored more than
40 scientific journal articles and conference contributions.
Keywords: ultrafast semiconductor disk lasers, High Power
MIXSELs, Low Noise VECSELs.
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