Limitations of ICCD detectors and optimized 2D phosphor thermometry
(2012) In Measurement Science & Technology 23(3).- Abstract
- This paper presents investigations on the limitations of intensified CCD (ICCD) cameras when performing quantitative 2D temperature measurements using thermographic phosphors. The temperature is evaluated using a two-color ratio technique, which demands high signal linearity of the detector. However, this work shows that the ICCD cameras used suffer from nonlinearity at levels of irradiance that do not necessarily produce particularly high count levels, i.e. well below the saturation limit of the A/D converter. For the phosphor thermometry, this results in false absolute temperature readings and decreased measurement precision. The results show that there is a useful workspace in the irradiance/camera gain combination where the detector... (More)
- This paper presents investigations on the limitations of intensified CCD (ICCD) cameras when performing quantitative 2D temperature measurements using thermographic phosphors. The temperature is evaluated using a two-color ratio technique, which demands high signal linearity of the detector. However, this work shows that the ICCD cameras used suffer from nonlinearity at levels of irradiance that do not necessarily produce particularly high count levels, i.e. well below the saturation limit of the A/D converter. For the phosphor thermometry, this results in false absolute temperature readings and decreased measurement precision. The results show that there is a useful workspace in the irradiance/camera gain combination where the detector should preferably be used. A response function for the ICCD camera used is constructed. Furthermore, in order to perform quantitative measurements, there is an upper limit of counts that should not be exceeded. This limit must be investigated for each experimental configuration since it depends on the characteristics of the specific light source and also varies between different cameras. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2390878
- author
- Lindén, Johannes LU ; Knappe, Christoph LU ; Richter, Mattias LU and Aldén, Marcus LU
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- laser-induced phosphorescence, thermographic phosphors, thermometry, image intensifier, ICCD detectors, saturation
- in
- Measurement Science & Technology
- volume
- 23
- issue
- 3
- publisher
- IOP Publishing
- external identifiers
-
- wos:000300614800019
- scopus:84857405500
- ISSN
- 0957-0233
- DOI
- 10.1088/0957-0233/23/3/035201
- language
- English
- LU publication?
- yes
- id
- 53c7ecc1-8bdc-41b6-acc8-ec81e8de6a1f (old id 2390878)
- date added to LUP
- 2016-04-01 14:20:05
- date last changed
- 2022-03-21 23:28:34
@article{53c7ecc1-8bdc-41b6-acc8-ec81e8de6a1f, abstract = {{This paper presents investigations on the limitations of intensified CCD (ICCD) cameras when performing quantitative 2D temperature measurements using thermographic phosphors. The temperature is evaluated using a two-color ratio technique, which demands high signal linearity of the detector. However, this work shows that the ICCD cameras used suffer from nonlinearity at levels of irradiance that do not necessarily produce particularly high count levels, i.e. well below the saturation limit of the A/D converter. For the phosphor thermometry, this results in false absolute temperature readings and decreased measurement precision. The results show that there is a useful workspace in the irradiance/camera gain combination where the detector should preferably be used. A response function for the ICCD camera used is constructed. Furthermore, in order to perform quantitative measurements, there is an upper limit of counts that should not be exceeded. This limit must be investigated for each experimental configuration since it depends on the characteristics of the specific light source and also varies between different cameras.}}, author = {{Lindén, Johannes and Knappe, Christoph and Richter, Mattias and Aldén, Marcus}}, issn = {{0957-0233}}, keywords = {{laser-induced phosphorescence; thermographic phosphors; thermometry; image intensifier; ICCD detectors; saturation}}, language = {{eng}}, number = {{3}}, publisher = {{IOP Publishing}}, series = {{Measurement Science & Technology}}, title = {{Limitations of ICCD detectors and optimized 2D phosphor thermometry}}, url = {{http://dx.doi.org/10.1088/0957-0233/23/3/035201}}, doi = {{10.1088/0957-0233/23/3/035201}}, volume = {{23}}, year = {{2012}}, }