caa a22 4500 445371560 CHVBK 20180317142948.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1007/s00340-011-4696-8 doi (NATIONALLICENCE)springer-10.1007/s00340-011-4696-8 Optical pump concepts for highly efficient quasi-three-level lasers [Elektronische Daten] [K. Albers, U. Wittrock] Efficient quasi-three-level laser operation requires the generation of the highest possible pump rate from a given pump source. We derive the fundamental scaling laws for the pump rate and we extract optimization criteria for pump concepts from these laws. The analysis is then applied to the thin-disk laser. Based on the results, a novel pump concept for thin-disk lasers is proposed, which allows for several tens of pump beam passes and reduces the optical complexity of conventional pump concepts. Furthermore, the beam quality of the pump source is preserved almost completely, facilitating the highest possible pump rate. Springer-Verlag, 2011 Albers K. Photonics Laboratory, Muenster University of Applied Sciences, Stegerwaldstrasse 39, 48565, Burgsteinfurt, Germany aut Wittrock U. Photonics Laboratory, Muenster University of Applied Sciences, Stegerwaldstrasse 39, 48565, Burgsteinfurt, Germany aut Applied Physics B Springer-Verlag 105/2(2011-11-01), 245-254 0946-2171 105:2<245 2011 105 340 https://doi.org/10.1007/s00340-011-4696-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00340-011-4696-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Albers K. Photonics Laboratory, Muenster University of Applied Sciences, Stegerwaldstrasse 39, 48565, Burgsteinfurt, Germany aut NATIONALLICENCE 700 1- Wittrock U. Photonics Laboratory, Muenster University of Applied Sciences, Stegerwaldstrasse 39, 48565, Burgsteinfurt, Germany aut NATIONALLICENCE 773 0- Applied Physics B Springer-Verlag 105/2(2011-11-01), 245-254 0946-2171 105:2<245 2011 105 340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer