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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 5 — Mar. 10, 2014
  • pp: 6099–6107

Pulse repetition rate scaling from 5 to 100 GHz with a high-power semiconductor disk laser

Mario Mangold, Christian A. Zaugg, Sandro M. Link, Matthias Golling, Bauke W. Tilma, and Ursula Keller  »View Author Affiliations

Optics Express, Vol. 22, Issue 5, pp. 6099-6107 (2014)

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The high-power semiconductor laser studied here is a modelocked integrated external-cavity surface emitting laser (MIXSEL), which combines the gain of vertical-external-cavity surface-emitting lasers (VECSELs) with the saturable absorber of a semiconductor saturable absorber mirror (SESAM) in a single semiconductor layer stack. The MIXSEL concept allows for stable and self-starting fundamental passive modelocking in a simple straight cavity and the average power scaling is based on the semiconductor disk laser concept. Previously record-high average output power from an optically pumped MIXSEL was demonstrated, however the long pulse duration of 17 ps prevented higher pulse repetition rates and many interesting applications such as supercontinuum generation and broadband frequency comb generation. With a novel MIXSEL structure, the first femtosecond operation was then demonstrated just recently. Here we show that such a MIXSEL can also support pulse repetition rate scaling from ≈5 GHz to >100 GHz with excellent beam quality and high average output power, by mechanically changing the cavity length of the linear straight cavity and the output coupler. Up to a pulse repetition rate of 15 GHz we obtained average output power >1 W and pulse durations <4 ps. Furthermore we have been able to demonstrate the highest pulse repetition rate from any fundamentally modelocked semiconductor disk laser with 101.2 GHz at an average output power of 127 mW and a pulse duration of 570 fs.

© 2014 Optical Society of America

OCIS Codes
(140.3460) Lasers and laser optics : Lasers
(140.4050) Lasers and laser optics : Mode-locked lasers
(140.5960) Lasers and laser optics : Semiconductor lasers
(140.7090) Lasers and laser optics : Ultrafast lasers
(140.7270) Lasers and laser optics : Vertical emitting lasers

ToC Category:
Modelocked Oscillators

Original Manuscript: January 14, 2014
Revised Manuscript: February 18, 2014
Manuscript Accepted: February 20, 2014
Published: March 7, 2014

Virtual Issues
2013 Advanced Solid State Lasers (2013) Optics Express

Mario Mangold, Christian A. Zaugg, Sandro M. Link, Matthias Golling, Bauke W. Tilma, and Ursula Keller, "Pulse repetition rate scaling from 5 to 100 GHz with a high-power semiconductor disk laser," Opt. Express 22, 6099-6107 (2014)

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  22. V. J. Wittwer, M. Mangold, M. Hoffmann, O. D. Sieber, M. Golling, T. Sudmeyer, U. Keller, “High-power integrated ultrafast semiconductor disk laser: multi-Watt 10 GHz pulse generation,” Electron. Lett. 48(18), 1144–1145 (2012). [CrossRef]
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