Quantum efficiency measurements in Yb-doped crystals using an optical method

Author

Chénais, S. ; Balembois, F. ; Druon, F. ; Lucas-Leclin, G. ; Georges, Patrick

Author_Institution

Lab. Charles Fabry, Univ. Paris Sud, Orsay, France

fYear

2003

fDate

22-27 June 2003

Firstpage

338

Abstract

The quantum efficiency, defined as the ratio of excited ions that decay radiatively (under nonlasing conditions), is an important parameter for laser efficiency. concentration quenching (and to a lesser extent multiphonon nonradiative decay) is likely to take place in Yb-doped materials, and reduces the quantum efficiency in highly-doped crystals that are commonly used under diode pumping. In this paper we relate quantum efficiency measurements in Ytterbium-doped YAG, GGG, KGW, YSO, GdCOB and YCOB, performed with a thermal lensing measurement technique, developed for diode-end-pumping configurations.

Keywords

calcium compounds; gadolinium compounds; gallium compounds; optical materials; optical pumping; phonon-phonon interactions; potassium compounds; quantum optics; radiation quenching; solid lasers; thermal lensing; ytterbium; yttrium compounds; GGG; GdCOB; KGW; YAG; YCOB; YSO; Yb-doped crystal; concentration quenching; diode pumping; laser efficiency; multiphonon nonradiative decay; quantum efficiency measurement; thermal lensing measurement; Crystalline materials; Crystals; Diodes; Laser excitation; Optical materials; Optical pumping; Particle beam optics; Performance evaluation; Pump lasers; Thermal lensing;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Europe, 2003. CLEO/Europe. 2003 Conference on

Print_ISBN

0-7803-7734-6

Type

conf

DOI

10.1109/CLEOE.2003.1312399

Filename

1312399