Abstract

We present successful power-scaling of an $\mathrm{Yb}:{\mathrm{Lu}}_2{\mathrm{O}}_3$ 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 $\left({\eta }_{\mathrm{opt}}\right)$. 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 $({\eta }_{\mathrm{opt}}=35\%)$. 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

Efficient femtosecond high power Yb:Lu2O3 thin disk laser

S. V. Marchese, C. R. E. Baer, R. Peters, C. Kränkel, A. G. Engqvist, M. Golling, D. J. H. C. Maas, K. Petermann, T. Südmeyer, G. Huber, and U. Keller
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Femtosecond thin-disk laser with 141 W of average power

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Peak-power scaling of femtosecond Yb:Lu₂O₃ thin-disk lasers

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Sub-100-fs Kerr lens mode-locked Yb:Lu₂O₃ thin-disk laser oscillator operating at 21 W average power

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Opt. Express 27(11) 16111-16120 (2019)

16.2-W average power from a diode-pumped femtosecond Yb:YAG thin disk laser

J. Aus der Au, G. J. Spühler, T. Südmeyer, R. Paschotta, R. Hövel, M. Moser, S. Erhard, M. Karszewski, A. Giesen, and U. Keller
Opt. Lett. 25(11) 859-861 (2000)