Cante, Silvia and Mackenzie, Jacob (2020) Energy transfer upconversion in Nd:YAG at cryogenic-temperatures. Optical Materials Express, 10 (9), 2019-2029. (doi:10.1364/OME.397034).
Abstract
The precise characterisation of the ground state absorption cross section around 800nm of Nd:YAG from Room Temperature to Liquid Nitrogen Temperature is presented. These results enabled the measurement of the Energy Transfer Upconversion macroparameter over the same temperature range for 0.3at.% - and 0.6at.%-doped samples via a simple and automated z-scan technique. The main absorption cross section peak at 808nm is found to increase from (6.90±0.30)pm2 at the highest to (42.30±2.10) pm2 at the lowest temperatures, respectively. Over the same range, the ETU parameter increases from (21.5±2.3)10−18cm3/s to (52.6±2.5)10−18cm3/s and from (36.0±2.8)10−18cm3 to (65.7±1.9)10−18cm/s, for 0.3at.% and 0.6at.%, respectively. Although a limiting factor in the RT operation at 946nm of Nd:YAG, we calculate that despite the twofold increase in the ETU parameter, with the crystal cooled to LNT its effect on laser threshold is negligible.
This record has no associated files available for download.
More information
Identifiers
Catalogue record
Export record
Altmetrics
Contributors
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.