Accession Number : ADA136136

Title :   Interferometry of Moving Objects under Water.

Descriptive Note : Final rept. 1 Jan 81-15 Jul 83,

Corporate Author : ARIZONA UNIV TUCSON OPTICAL SCIENCES CENTER

Personal Author(s) : Hopf,F A

PDF Url : ADA136136

Report Date : Nov 1983

Pagination or Media Count : 6

Abstract : It has been demonstrated that interferometers using nonlinear optics are suitable for the task of examining underwater surface deformations that are much larger than optical wavelengths. The demonstration has been limited to 1.06-micron devices whose sensitivity is of the order of 100 micron. The precise sensitivity is somewhat adjustable by examining the object in transmission rather than reflection. The device has been operated under simulated field conditions, and has proved to be insensitive to high levels of vibration. The attempt to make a more sensitive device operating at 0.69 micron has not been successful. (Author)

Descriptors :   *Optical interferometers, *Underwater objects, *Field tests, *Deformation, Nonlinear systems, Ocean surface, Sensitivity, Ripples, Laser beams, Light, Field conditions, Simulation

Subject Categories : Marine Engineering
      Test Facilities, Equipment and Methods
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE