We investigate the characteristics of a thin disk laser system based on the master oscillator—power amplifier design. The amplifier emits parasitic laser oscillation (PL) when the wavelength of the tunable narrow-bandwidth seed pulse is detuned more than from the gain maximum at . For suppression of this unwanted PL, a birefringent filter (Lyot filter) was inserted into the amplifier cavity in order to generate wavelength selective losses, especially at the gain maximum of the Yb:YAG crystal. It is shown that the tunability range of the laser system can be extended by a factor of 4, when a prop erly chosen Lyot filter is applied and its angle of rotation is adapted to the seed wavelength of the system.
© 2010 Optical Society of AmericaFull Article | PDF Article
OSA Recommended Articles
Opt. Express 21(22) 26174-26181 (2013)
Detlef Nickel, Christian Stolzenburg, Adolf Giesen, and Frank Butze
Opt. Lett. 29(23) 2764-2766 (2004)
Anne-Laure Calendron, Hüseyin Çankaya, and Franz X. Kärtner
Opt. Express 22(20) 24752-24762 (2014)