Publication: Comparative investigation of diode-pumped Tm3+: YAlO3 lasers: influence of doping concentration
Program
KU Authors
Co-Authors
N/A
Advisor
Publication Date
2005
Language
English
Type
Conference proceeding
Journal Title
Journal ISSN
Volume Title
Abstract
We investigated the effect of thulium ion concentration on the continuous-wave power performance of diode single-end-pumped Tm3+:YAlO3 (Tm:YAP) lasers operating at 2 µm by using crystals with 1.5%, 3%, and 4% Tm3+ concentration. Best results were obtained with the 1.5% Tm3+:YAP crystal. Spectroscopic measurements and rate-equation analysis suggest that cross relaxation should already be effective at 1.5% Tm3+ concentration. Increase in reabsorption losses, non-radiative decay rates, and internal heating are likely causes of power degradation with increasing ion concentration. By using the laser efficiency data, the effective stimulated emission cross section was determined to be 4.2×10−21 cm2 at 1.94 µm, in agreement with previous results.
Description
Source:
Optics Infobase Conference Papers
Publisher:
The Optical Society (OSA) Publishing
Keywords:
Subject
Chemistry, Physics