dc.contributor.author |
Kissinger, Thomas |
|
dc.contributor.author |
Charrett, Thomas O. H. |
|
dc.contributor.author |
James, Stephen W. |
|
dc.contributor.author |
Adams, Alvin |
|
dc.contributor.author |
Twin, Andrew |
|
dc.contributor.author |
Tatam, Ralph P. |
|
dc.date.accessioned |
2016-02-04T10:37:42Z |
|
dc.date.available |
2016-02-04T10:37:42Z |
|
dc.date.issued |
2015-06 |
|
dc.identifier.citation |
Kissinger, T., Charrett, T.O.H., James, S.W., Adams, A., Twin, A. and Tatam, R.P. 2015. Simultaneous laser vibrometry on multiple surfaces with a single beam system using range-resolved interferometry. Proceedings of the SPIE, 9525, Optical measurement systems for industrial inspection IX, paper number 952520. DOI: 10.1117/12.2183281 |
en_UK |
dc.identifier.issn |
0277-786X |
|
dc.identifier.uri |
https://dspace.lib.cranfield.ac.uk/handle/1826/9684 |
|
dc.description.abstract |
A novel range-resolved interferometric signal processing technique that uses sinusoidal optical frequency modulation is applied to multi-surface vibrometry, demonstrating simultaneous optical measurements of vibrations on two surfaces using a single, collimated laser beam, with a minimum permissible distance of 3.5 cm between surfaces. The current system, using a cost-effective laser diode and a fibre-coupled, downlead insensitive setup, allows an interferometric fringe rate of up to 180 kHz to be resolved with typical displacement noise levels of 8 pm Hz-0.5. In this paper, the system is applied to vibrometry measurements of a table-top cryostat, with concurrent measurements of the optical widow and the sample holder inside. This allows the separation of common-mode vibrations of the whole cryostat from differential vibrations between the window and the sample holder. |
en_UK |
dc.description.sponsorship |
EPSRC |
en_UK |
dc.language.iso |
en |
en_UK |
dc.publisher |
SPIE |
en_UK |
dc.subject |
Interferometry |
en_UK |
dc.subject |
Vibrometry |
en_UK |
dc.subject |
Displacement sensing |
en_UK |
dc.subject |
Range-resolved interferometric signal processing |
en_UK |
dc.subject |
LDV |
en_UK |
dc.subject |
Multi-surface vibrometry |
en_UK |
dc.subject |
Cryogenics |
en_UK |
dc.subject |
Low temperature |
en_UK |
dc.title |
Simultaneous laser vibrometry on multiple surfaces with a single beam system using range-resolved interferometry |
en_UK |
dc.type |
Conference paper |
en_UK |