Speaker
Karsten Schuhmann
(ETH Zurich)
Description
Spatial hole burning prevents single-frequency operation of thin-disk lasers when the thin disk is used as a folding mirror. We present an evaluation of the saturation effects in the disk for disks acting as end-mirrors and as folding-mirrors explaining one of the main obstacles towards single-frequency operation. It is shown that a twisted-mode scheme based on a multi-order quarter-wave plate combined with a polarizer provides an almost complete suppression of spatial hole burning and creates an additional wavelength selectivity that enforces efficient single-frequency operation. We want to discuss the disadvantages and benefits of spatial hole burning in different laser systems.
Author
Karsten Schuhmann
(ETH Zurich)
Co-authors
Dr
Aldo Antognini
(Paul Scherrer Institute; ETH Zürich)
Prof.
Klaus Kirch
(Paul Scherrer Institute; ETH Zürich)
Laura Sinkunaite
Manuel Zeyen
(ETH Zürich)
Miroslaw Marszalek
(Paul Scherrer Institut)
Randolf Pohl
(Johannes Gutenberg University Mainz, Germany)
francois nez
(CNRS)
