Rise Kinetics of Up-Conversion Luminescence of the LiY0.8Yb0.2F4:Tm3+ (0.2 at %) Crystal with Pulsed Excitation
- Authors: Mikheev A.V.1, Kazakov B.N.2
- 
							Affiliations: 
							- Kazan National Research Technological University
- Kazan Federal University
 
- Issue: Vol 61, No 5 (2019)
- Pages: 860-866
- Section: Optical Properties
- URL: https://journal-vniispk.ru/1063-7834/article/view/205562
- DOI: https://doi.org/10.1134/S1063783419050172
- ID: 205562
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Abstract
The regression analysis of the rise kinetics of up-conversion luminescence of the LiY0.8Yb0.2F4:Tm3+ (0.2 at %) crystal is performed. The kinetics curve is obtained with rectangular pulsed excitation by radiation from a laser diode (IR LD) with a wavelength of λp = 933 nm. The most important—in these experimental conditions—mechanisms of the energy transfer from Yb3+ ions to Tm3+ ions are established, which are responsible for the transitions between the ground 3H6 and excited 3F4, 3H4, 1G4, 1D2, and 1I6 terms of the Tm3+ ions. The durations of the relevant energy transfer processes are determined. It is shown that the energy transfer between rare earth ions in the LiY0.8Yb0.2F4:Tm3+ (0.2 at %) crystal occurs through the dipole–dipole interactions.
About the authors
A. V. Mikheev
Kazan National Research Technological University
							Author for correspondence.
							Email: veehima@gmail.com
				                					                																			                												                	Russian Federation, 							Kazan						
B. N. Kazakov
Kazan Federal University
														Email: veehima@gmail.com
				                					                																			                												                	Russian Federation, 							Kazan						
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