Title :
Laser Doppler Vibrometer for long-distance acoustical signals acquirement
Author :
Shang, Jianhua ; He, Yan ; Liu, Dan ; Chen, Weibiao
Author_Institution :
Shanghai Key Lab. of All Solid-state Laser & Appl. Tech., Chinese Acad. of Sci., Shanghai, China
Abstract :
A laser Doppler Vibrometer (LDV) with a configuration of all fiber is developed according to the theory of the heterodyne detection. The system can be applied in an effective and high-sensitivity way to acquire the real-time acoustical signals through glass 20 meters away.
Keywords :
Doppler measurement; heterodyne detection; measurement by laser beam; vibration measurement; heterodyne detection; laser Doppler vibrometer; long distance acoustical signals; real-time acoustical signals; Acoustic beams; Acoustic signal detection; Fiber lasers; Frequency; Glass; Laser theory; Optical feedback; Optical fiber polarization; Optical signal processing; Vibrometers; Heterodyne detection; Laser Doppler Vibrometer; Quadrature demodulation;
Conference_Titel :
Lasers & Electro Optics & The Pacific Rim Conference on Lasers and Electro-Optics, 2009. CLEO/PACIFIC RIM '09. Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-3829-7
Electronic_ISBN :
978-1-4244-3830-3
DOI :
10.1109/CLEOPR.2009.5292080
