Matches in SemOpenAlex for { <https://semopenalex.org/work/W2093109963> ?p ?o ?g. }
- W2093109963 endingPage "351" @default.
- W2093109963 startingPage "335" @default.
- W2093109963 abstract "In this paper, we present an overview of research in the area of narrow-bandwidth generation and detection of ultrasound using a technique referred to as frequency domain photoacoustics. An intensity-modulated continuous wave laser is used for narrowband ultrasound generation, and an interferometer coupled to a radio frequency lock-in amplifier is used for detection. Excellent sensitivity is achieved using sinusoidal modulation of the excitation laser over long time scales, thereby focusing the acoustic energy at the excitation frequency. We describe an experimental approach for the direct detection of narrowband signals at the ultrasound excitation frequency, and a superheterodyne technique in which the signal is optically down-converted to a low and fixed intermediate frequency prior to detection. Two approaches for materials characterisation using frequency domain photoacoustic measurements are presented. In the first approach, the modulation frequency of the excitation laser is scanned over the bandwidth of interest, and a transient sample response is constructed from the frequency-domain data. Ultrasound arrivals that are separated in the time domain can then be time gated for further analysis. In the second approach, the modulation frequency of the excitation laser is fixed, but the source-to-receiver distance is varied. The spatial frequencies of the ultrasound modes generated by the laser are detected by analysing the spatial variation of the phase, allowing for the velocity of each mode at a given frequency to be determined. Experimental measurements in thin films, plates and nanomechanical structures are presented." @default.
- W2093109963 created "2016-06-24" @default.
- W2093109963 creator A5011437112 @default.
- W2093109963 creator A5018051682 @default.
- W2093109963 date "2011-09-01" @default.
- W2093109963 modified "2023-09-26" @default.
- W2093109963 title "Frequency domain photoacoustics using intensity-modulated laser sources" @default.
- W2093109963 cites W119505936 @default.
- W2093109963 cites W1499895046 @default.
- W2093109963 cites W1521089883 @default.
- W2093109963 cites W1964325950 @default.
- W2093109963 cites W1967032135 @default.
- W2093109963 cites W1969743302 @default.
- W2093109963 cites W1974133684 @default.
- W2093109963 cites W1974342381 @default.
- W2093109963 cites W1975813026 @default.
- W2093109963 cites W1982687458 @default.
- W2093109963 cites W1983231021 @default.
- W2093109963 cites W1992400916 @default.
- W2093109963 cites W1997092731 @default.
- W2093109963 cites W2004005246 @default.
- W2093109963 cites W2007547369 @default.
- W2093109963 cites W2007887643 @default.
- W2093109963 cites W2011084354 @default.
- W2093109963 cites W2011768378 @default.
- W2093109963 cites W2013695621 @default.
- W2093109963 cites W2018464775 @default.
- W2093109963 cites W2027211554 @default.
- W2093109963 cites W2037874261 @default.
- W2093109963 cites W2041626699 @default.
- W2093109963 cites W2046070849 @default.
- W2093109963 cites W2058947022 @default.
- W2093109963 cites W2059541596 @default.
- W2093109963 cites W2059982780 @default.
- W2093109963 cites W2065105858 @default.
- W2093109963 cites W2065438960 @default.
- W2093109963 cites W2068979653 @default.
- W2093109963 cites W2069594239 @default.
- W2093109963 cites W2072093263 @default.
- W2093109963 cites W2074464075 @default.
- W2093109963 cites W2077164489 @default.
- W2093109963 cites W2080814283 @default.
- W2093109963 cites W2081848570 @default.
- W2093109963 cites W2082413974 @default.
- W2093109963 cites W2089265458 @default.
- W2093109963 cites W2106446759 @default.
- W2093109963 cites W2123063559 @default.
- W2093109963 cites W2139377325 @default.
- W2093109963 cites W2140223633 @default.
- W2093109963 cites W2147035967 @default.
- W2093109963 cites W2156670901 @default.
- W2093109963 doi "https://doi.org/10.1080/10589759.2011.573554" @default.
- W2093109963 hasPublicationYear "2011" @default.
- W2093109963 type Work @default.
- W2093109963 sameAs 2093109963 @default.
- W2093109963 citedByCount "6" @default.
- W2093109963 countsByYear W20931099632013 @default.
- W2093109963 countsByYear W20931099632014 @default.
- W2093109963 countsByYear W20931099632016 @default.
- W2093109963 countsByYear W20931099632019 @default.
- W2093109963 countsByYear W20931099632022 @default.
- W2093109963 crossrefType "journal-article" @default.
- W2093109963 hasAuthorship W2093109963A5011437112 @default.
- W2093109963 hasAuthorship W2093109963A5018051682 @default.
- W2093109963 hasConcept C103824480 @default.
- W2093109963 hasConcept C11930861 @default.
- W2093109963 hasConcept C119599485 @default.
- W2093109963 hasConcept C120665830 @default.
- W2093109963 hasConcept C121332964 @default.
- W2093109963 hasConcept C127413603 @default.
- W2093109963 hasConcept C147788027 @default.
- W2093109963 hasConcept C19118579 @default.
- W2093109963 hasConcept C192562407 @default.
- W2093109963 hasConcept C199360897 @default.
- W2093109963 hasConcept C200649887 @default.
- W2093109963 hasConcept C24890656 @default.
- W2093109963 hasConcept C2776096036 @default.
- W2093109963 hasConcept C2776257435 @default.
- W2093109963 hasConcept C2779843651 @default.
- W2093109963 hasConcept C31972630 @default.
- W2093109963 hasConcept C37580369 @default.
- W2093109963 hasConcept C41008148 @default.
- W2093109963 hasConcept C520434653 @default.
- W2093109963 hasConcept C7054721 @default.
- W2093109963 hasConcept C76155785 @default.
- W2093109963 hasConcept C8590192 @default.
- W2093109963 hasConcept C96199931 @default.
- W2093109963 hasConceptScore W2093109963C103824480 @default.
- W2093109963 hasConceptScore W2093109963C11930861 @default.
- W2093109963 hasConceptScore W2093109963C119599485 @default.
- W2093109963 hasConceptScore W2093109963C120665830 @default.
- W2093109963 hasConceptScore W2093109963C121332964 @default.
- W2093109963 hasConceptScore W2093109963C127413603 @default.
- W2093109963 hasConceptScore W2093109963C147788027 @default.
- W2093109963 hasConceptScore W2093109963C19118579 @default.
- W2093109963 hasConceptScore W2093109963C192562407 @default.
- W2093109963 hasConceptScore W2093109963C199360897 @default.
- W2093109963 hasConceptScore W2093109963C200649887 @default.