Minimizing the angle of incidence errors in intensity ratio phosphor thermometry
Cheng, Weilun LU ; Liu, Yingzheng ; Peng, Di and Feuk, Henrik LU
(2025)
In Measurement Science and Technology
36(7).
- Abstract
Intensity ratio-based phosphor thermometry is a promising technique for instantaneous temperature measurement of fast-moving objects. However, its accuracy is limited by the blueshift effects of interference filters induced by angle of incidence (AOI) variations. This is especially problematic for phosphors with significant temperature-dependent emission band shifts. To address this issue, we propose the following two-step method. First, a simulation procedure is developed to evaluate measurement errors induced by AOI variations under different filter sets using the BaMgAl10O17:Eu2+ (BAM:Eu) phosphor. Simulation results are carefully analyzed, and a filter set is selected that generates low AOI errors... (More)
Intensity ratio-based phosphor thermometry is a promising technique for instantaneous temperature measurement of fast-moving objects. However, its accuracy is limited by the blueshift effects of interference filters induced by angle of incidence (AOI) variations. This is especially problematic for phosphors with significant temperature-dependent emission band shifts. To address this issue, we propose the following two-step method. First, a simulation procedure is developed to evaluate measurement errors induced by AOI variations under different filter sets using the BaMgAl10O17:Eu2+ (BAM:Eu) phosphor. Simulation results are carefully analyzed, and a filter set is selected that generates low AOI errors and high temperature sensitivity. Second, an experimental temperature-AOI calibration method is developed by fitting the intensity ratio distribution under different AOIs and temperatures using a bivariate quadratic function. Finally, the intensity ratio-based phosphor thermometry method with the selected filter set and the temperature-AOI calibration is validated via surface temperature measurements on a heated disk. AOI-induced errors up to 25 K and 12 K are effectively removed under stationary and rotating conditions, respectively.
(Less)
- author
- Cheng, Weilun
LU
; Liu, Yingzheng
; Peng, Di
and Feuk, Henrik
LU
- organization
- publishing date
- 2025-07-31
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- angle of incidence, blueshift effects, intensity ratio, phosphor thermometry
- in
- Measurement Science and Technology
- volume
- 36
- issue
- 7
- article number
- 075203
- publisher
- IOP Publishing
- external identifiers
-
- scopus:105009718865
- ISSN
- 0957-0233
- DOI
- 10.1088/1361-6501/ade6a2
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2025 IOP Publishing Ltd. All rights, including for text and data mining, AI training, and similar technologies, are reserved.
- id
- b0ef7a40-52ae-4634-a673-cc3be98cb5c5
- date added to LUP
- 2025-12-09 14:27:29
- date last changed
- 2025-12-09 14:27:46
@article{b0ef7a40-52ae-4634-a673-cc3be98cb5c5,
abstract = {{<p>Intensity ratio-based phosphor thermometry is a promising technique for instantaneous temperature measurement of fast-moving objects. However, its accuracy is limited by the blueshift effects of interference filters induced by angle of incidence (AOI) variations. This is especially problematic for phosphors with significant temperature-dependent emission band shifts. To address this issue, we propose the following two-step method. First, a simulation procedure is developed to evaluate measurement errors induced by AOI variations under different filter sets using the BaMgAl<sub>10</sub>O<sub>17</sub>:Eu<sup>2+</sup> (BAM:Eu) phosphor. Simulation results are carefully analyzed, and a filter set is selected that generates low AOI errors and high temperature sensitivity. Second, an experimental temperature-AOI calibration method is developed by fitting the intensity ratio distribution under different AOIs and temperatures using a bivariate quadratic function. Finally, the intensity ratio-based phosphor thermometry method with the selected filter set and the temperature-AOI calibration is validated via surface temperature measurements on a heated disk. AOI-induced errors up to 25 K and 12 K are effectively removed under stationary and rotating conditions, respectively.</p>}},
author = {{Cheng, Weilun and Liu, Yingzheng and Peng, Di and Feuk, Henrik}},
issn = {{0957-0233}},
keywords = {{angle of incidence; blueshift effects; intensity ratio; phosphor thermometry}},
language = {{eng}},
month = {{07}},
number = {{7}},
publisher = {{IOP Publishing}},
series = {{Measurement Science and Technology}},
title = {{Minimizing the angle of incidence errors in intensity ratio phosphor thermometry}},
url = {{http://dx.doi.org/10.1088/1361-6501/ade6a2}},
doi = {{10.1088/1361-6501/ade6a2}},
volume = {{36}},
year = {{2025}},
}