Ytterbium-doped garnets are attractive for use in high-energy diode-pumped solid-state lasers due to their spectral and thermal properties. Yb:YAG is one of the most well developed thin-disk laser materials. Recently, Yb:LuAG [1-4] was investigated as a promising candidate for kW thin-disk lasers because of its superior thermal conductivity especially at high doping concentrations compared to Yb:YAG. In this paper we demonstrate high-energy ns-pulse multipass amplification in Yb:YAG and Yb:LuAG. Pulses with a duration of 6 ns at a center wavelength of 1030 nm were generated in a cavity dumped oscillator and amplified to 20 mJ in an Yb:YAG based booster amplifier. The gain medium of a further (main) amplifier was pumped by a stack of micro-lens homogenized laser diodes operating at 940 nm a peak output power of 4kW. The pump light is focussed to a spot size of 4 mm into the disk while the reflected (not absorbed) light was recovered by an imaging system leading to two double-passes through the gain medium. The output of the booster is sent into a semi-stable resonator cavity (mirror based 4-f imaging system around the laser disk) forming a 10-pass amplifier.

© 2013 IEEE

PDF Article
More Like This
High-energy, diode-pumped Yb:CaF2 disk-laser

M. Siebold, M. Loeser, F. Roeser, F. Kroll, J. Körner, J. Hein, and U. Schramm
CA4_4 The European Conference on Lasers and Electro-Optics (CLEO_Europe) 2011

1-kHz Pulsed Pumped Yb:YAG Thin Disk Regenerative Amplifier

Taisuke Miura, Michal Chyla, Martin Smrž, Siva Sankar Nagisetty, Patricie Severová, Ondřej Novák, Akira Endo, and Tomáš Mocek
CA_5_6 The European Conference on Lasers and Electro-Optics (CLEO_Europe) 2013

High energy diode-pumped Yb:YAG laser for ns-pulses

M. Siebold, S. Klingebiel, C. Wandt, Z. Major, A. Popp, I. Ahmad, T.-J. Wang, J. Hein, F. Krausz, and S. Karsch
MF3 Advanced Solid-State Photonics (ASSP) 2008


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access Optica Member Subscription