Optical Generation And Spatially Distinct Interferometric Detection Of Ultrahigh Frequency Surface Acoustic Waves

Journal Article · Mon May 01 00:00:00 EDT 2006 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2203311· OSTI ID:912419

Hurley, David H

Generation and interferometric detection of 22 GHz surface acoustic waves (SAWs) using two laterally separated absorption gratings on a Si substrate are presented. Optical phase sensitive detection of SAWs is demonstrated using a modified Sagnac interferometer. The reflection characteristics of the suboptical wavelength grating necessitate the use of only linear polarization. This is accomplished by employing a Faraday rotator to ensure path reversal of the reference and signal pulses. The enhanced sensitivity of the interferometer is exploited to measure the acoustic disturbance on an identical absorption grating at a distance of ~4.5 µm from the generation site.

• Research Organization: Idaho National Lab. (INL), Idaho Falls, ID (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: DE-AC07-99ID-13727
• OSTI ID: 912419
• Report Number(s): INL/JOU-05-00950; APPLAB; TRN: US200801%%850
• Journal Information: Applied Physics Letters, Vol. 88, Issue 19; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 - CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
ACOUSTICS
DETECTION
DISTURBANCES
INTERFEROMETERS
POLARIZATION
REFLECTION
SENSITIVITY
SUBSTRATES
WAVELENGTHS
absorption
polarization
surface acoustic waves
wavelength