Measuring the elevated temperature dependence of up-conversion in Nd:YAG
Measuring the elevated temperature dependence of up-conversion in Nd:YAG
We present the measurement of the energy transfer upconversion coefficient temperature-dependence from the main upper laser level (4F3/2) of 1at.% doped Nd:YAG. This is achieved by a very simple method employing the z-scan technique, through monitoring the transmitted power of a probe laser tuned to the main absorption peak at 808 nm. In addition, to fully develop a simple model to support the measurements, we have accurately measured the temperature dependent absorption coefficient for this absorption band, covering the range from 300-450K. The spatially dependent two-level rate equation model is described, which simulates the relationship between the incident pump irradiance and power transmitted by the crystal, in function of its temperature. By comparing the experimental results with the model, we obtain a value for the energy transfer upconversion coefficient of 5.1±0.4 ×10-17 cm3/s, at room temperature, decreasing to 2.0 ×10-17 cm3/s at 450 K.
Yan, RenPeng
dff664a8-b31b-4f6b-8d49-3985c33cc94b
Yoon, Sung Jin
fcca92bf-3283-4ba8-85d5-767ca419aa9f
Beecher, Stephen J.
b3664adc-d6b5-4a5a-a09a-8e1415c6d3f5
Mackenzie, Jacob I.
1d82c826-fdbf-425b-ac04-be43ccf12008
January 2015
Yan, RenPeng
dff664a8-b31b-4f6b-8d49-3985c33cc94b
Yoon, Sung Jin
fcca92bf-3283-4ba8-85d5-767ca419aa9f
Beecher, Stephen J.
b3664adc-d6b5-4a5a-a09a-8e1415c6d3f5
Mackenzie, Jacob I.
1d82c826-fdbf-425b-ac04-be43ccf12008
Yan, RenPeng, Yoon, Sung Jin, Beecher, Stephen J. and Mackenzie, Jacob I.
(2015)
Measuring the elevated temperature dependence of up-conversion in Nd:YAG.
IEEE Journal of Selected Topics in Quantum Electronics, 21 (1), [1601208].
(doi:10.1109/JSTQE.2014.2336776).
Abstract
We present the measurement of the energy transfer upconversion coefficient temperature-dependence from the main upper laser level (4F3/2) of 1at.% doped Nd:YAG. This is achieved by a very simple method employing the z-scan technique, through monitoring the transmitted power of a probe laser tuned to the main absorption peak at 808 nm. In addition, to fully develop a simple model to support the measurements, we have accurately measured the temperature dependent absorption coefficient for this absorption band, covering the range from 300-450K. The spatially dependent two-level rate equation model is described, which simulates the relationship between the incident pump irradiance and power transmitted by the crystal, in function of its temperature. By comparing the experimental results with the model, we obtain a value for the energy transfer upconversion coefficient of 5.1±0.4 ×10-17 cm3/s, at room temperature, decreasing to 2.0 ×10-17 cm3/s at 450 K.
Text
Yan 2015 IEEE STQE V21 No1 pg1601208
- Author's Original
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Accepted/In Press date: 3 July 2014
e-pub ahead of print date: 8 July 2014
Published date: January 2015
Organisations:
Optoelectronics Research Centre
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Local EPrints ID: 369628
URI: http://eprints.soton.ac.uk/id/eprint/369628
ISSN: 1077-260X
PURE UUID: 2a4f1937-57fa-4b61-8944-68ccf5abc7e1
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Date deposited: 08 Oct 2014 12:17
Last modified: 15 Mar 2024 03:07
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Author:
RenPeng Yan
Author:
Sung Jin Yoon
Author:
Stephen J. Beecher
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