Multi-target CW interferometric acoustic measurements on a single optical beam
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Zhang, Ya; Bandutunga, Chathura; Gray, Malcolm B; Chow, Jong
Description
We present a free-space, continuous-wave laser interferometric system capable of multi-target dynamic phase measurement at acoustic frequencies up to a Nyquist bandwidth of 10.2 kHz. The system uses Digitally-enhanced Heterodyne Interferometry to range gate acoustic signals simultaneously from multiple in-line reflections while isolating coherent cross-talk between them. We demonstrate sub-nanometer displacement sensitivity across the audio band for each individual reflection surface and...[Show more]
Collections | ANU Research Publications |
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Date published: | 2019 |
Type: | Journal article |
URI: | http://hdl.handle.net/1885/205384 |
Source: | Optics Express |
DOI: | 10.1364/OE.27.018477 |
Access Rights: | Open Access |
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File | Description | Size | Format | Image |
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01_Zhang_Multi-target_CW_2019.pdf | 1.98 MB | Adobe PDF |
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