Title :
High sensitivity photo-EMF detection using pulsed lasers
Author :
Rodriguez, P. ; Wang, Chen-Chia ; Trivedi, Sudhir ; Jin, Feng ; Stepanov, S. ; Meyers, J.F. ; Lee, Joseph ; Khurgin, Jacob
Author_Institution :
INAOE, Puebla, Mexico
Abstract :
We propose and experimentally demonstrate a high-sensitivity vibrometer based on photo-EMF detector and pulsed laser for the detection of ultrasonic induced surface displacements. Comparison between the pulsed and continuous-wave illumination is presented.
Keywords :
displacement measurement; measurement by laser beam; nondestructive testing; photoconducting devices; photodetectors; vibration measurement; continuous-wave illumination; high sensitivity detection; photoEMF detection; pulsed illumination; pulsed lasers; ultrasonic induced surface displacements; vibrometer;
Conference_Titel :
Lasers and Electro-Optics, 2004. (CLEO). Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
1-55752-777-6
