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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 18 — Sep. 15, 2009
  • pp: 2823–2825

Femtosecond Yb : Lu 2 O 3 thin disk laser with 63 W of average power

C. R.E. Baer, C. Kränkel, C. J. Saraceno, O. H. Heckl, M. Golling, T. Südmeyer, R. Peters, K. Petermann, G. Huber, and U. Keller  »View Author Affiliations


Optics Letters, Vol. 34, Issue 18, pp. 2823-2825 (2009)
http://dx.doi.org/10.1364/OL.34.002823


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Abstract

We present successful power-scaling of an Yb : Lu 2 O 3 thin disk laser to record high-power levels both in cw and mode-locked operation. In a simple multimode resonator we achieved 149 W of output power in cw operation with 73% optical-to-optical efficiency ( η opt ) . Building an 81 MHz fundamental transverse mode resonator with dispersion compensation and a semiconductor saturable absorber mirror (SESAM) for passive mode locking we achieved 63 W of average power in 535 fs pulses ( η opt = 35 % ) . The output beam is nearly diffraction limited ( M 2 < 1.2 ) . The 0.78 μJ pulses with a peak power of 1.28 MW had a central wavelength of 1034 nm and were close to the Fourier transform limit. With an SESAM with a larger modulation depth we obtained pulses as short as 329 fs at 40 W average power corresponding to a pulse energy of 0.49 μJ and a peak power of 1.32 MW.

© 2009 Optical Society of America

OCIS Codes
(140.3380) Lasers and laser optics : Laser materials
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.4050) Lasers and laser optics : Mode-locked lasers
(140.3615) Lasers and laser optics : Lasers, ytterbium

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: June 3, 2009
Manuscript Accepted: August 12, 2009
Published: September 10, 2009

Citation
C. R. E. Baer, C. Kränkel, C. J. Saraceno, O. H. Heckl, M. Golling, T. Südmeyer, R. Peters, K. Petermann, G. Huber, and U. Keller, "Femtosecond Yb:Lu2O3 thin disk laser with 63 W of average power," Opt. Lett. 34, 2823-2825 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-18-2823

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