Accession Number : ADD009986

Title :   Superlattice Ultrasonic Wave Generator.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Quinn,John J ; Strom,Ulrich ; Chang,Leroy L

Report Date : 19 Oct 1982

Pagination or Media Count : 24

Abstract : An ultrasonic wave generator comprising a semiconductor superlattice with a periodic variation in its space charge and a far infrared laser for applying a transient electric field to the superlattice transverse to the direction of its periodic variation. The ultrasonic wave produced has a wavelength of the period of the superlattice which can result in gigahertz ultrasonic waves. (Author)

Descriptors :   *Patent applications, *Signal generators, *Lattice dynamics, *Semiconductors, *Radiofrequency generators, *Ultrasonics, *Infrared lasers, Space charge, Phonons, Far infrared radiation, Electric fields, Extremely high frequency, Waves, Crystal lattices, Single crystals, Acoustic waves, Indium, Arsenides, Transducers, Gallium antimonides, Doping, Aluminum gallium arsenide, Generators

Subject Categories : Lasers and Masers
      Acoustics
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE