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.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
