System and method to enable eye-safe laser ultrasound detection
摘要
A system and method that replaces safety requirements of a laser detection system by shifting the wavelength ofa detection laser. An optical wavelength converter that shifts the optical wavelength of a detection laser from a first wavelength within the Infrared "A" portion of the spectrum to a more eye-safe wavelength. The detection laser is directed to the surface of a remote target. Ultrasonic displacements at the surface scatter the filtered detection laser. Collection optics then gather phase modulated light scattered by the surface and direct the phase modulated light to an optical processor that produces a signal representative of the ultrasonic displacements. Signal processors then determine the internal structure of the remote target based on the signal.
申请公布号
EP1589335(A2)
申请公布日期
2005.10.26
申请号
EP20050008379
申请日期
2005.04.18
申请人
LOCKHEED MARTIN CORPORATION
发明人
DUBOIS, MARC;DEATON,JR., JOHN B.;DRAKE,THOMAS E.JR