Energy transfer upconversion measurements for popular neodymium-doped crystals

Sung Jin Yoon; RenPeng Yan; Stephen J. Beecher; Jacob I. Mackenzie

doi:10.1117/12.2082707

26 March 2015 Energy transfer upconversion measurements for popular neodymium-doped crystals

Sung Jin Yoon, RenPeng Yan, Stephen J. Beecher, Jacob I. Mackenzie

Proceedings Volume 9342, Solid State Lasers XXIV: Technology and Devices; 93421D (2015) https://doi.org/10.1117/12.2082707
Event: SPIE LASE, 2015, San Francisco, California, United States

Abstract

We report our investigations on measuring the energy transfer upconversion (ETU) parameter in various neodymiumdoped laser crystals (YAG, YVO4, GdVO4, KGW, and YLF) via the z-scan technique. Starting with a simple two-level macro-parameter spatially dependent rate equation model we obtain a good correlation for Nd:YAG at different concentrations and crystal temperatures, however the other crystals illustrate significant deviation between simulation and measurement. Currently we attribute this difference to additional ion-ion interactions in the respective samples, for which a more detailed model is currently being considered. Of the tested materials Nd:YAG appears to have the lowest ETU macro parameter, at around 0.35 x10^-16 cm³/s for a 0.6 at.% doping concentration, compared with nominally thrice this for 0.5 at% Nd:YLF and almost an order of magnitude higher for the 0.5 at.% vanadates (YVO₄ and GdVO₄). These values are significant for determining additional heat load in the respective gain media, especially when trying to increase the output power/energy from lasers employing these crystals, typically achieved by increasing the pump and cavity mode size.

Citation Download Citation

Sung Jin Yoon, RenPeng Yan, Stephen J. Beecher, and Jacob I. Mackenzie "Energy transfer upconversion measurements for popular neodymium-doped crystals", Proc. SPIE 9342, Solid State Lasers XXIV: Technology and Devices, 93421D (26 March 2015); https://doi.org/10.1117/12.2082707

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available