Devices incorporating phonon filters

Details Devices incorporating phonon filters Devices incorporating phonon filters

1980-12-15

1982-09-14

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333 99S, 333142, 357 1, 367 7, H03H 924, H03H 946, H03H 912

Patent

active

043497969

ABSTRACT:
An acoustic superlattice of alternating layers of different acoustic impedance is disclosed as a filter for high frequency phonons. Applications discussed include spectrometers, acoustic imaging apparatus, and cavity resonators.

REFERENCES:
patent: 3562676 (1971-02-01), Parker, Jr.
patent: 3626257 (1971-12-01), Esaki et al.
patent: 4261771 (1981-04-01), Dingle et al.
Trumpp et al.-"Sources of Loss Processes in Phonon Generation and Detection Experiments with Superconducting Tunneling Junctions", Z. Physik, vol. B 28, 1977; pp. 159-171.
Weber et al.-"Absence of Anomalous Kapitza Conductance on Freshly Cleaved Surfaces", Physical Review Letters, vol. 40, No. 22, May 29, 1978; pp. 1469-1471.
Quate-"The Acoustic Microscope", Scientific American, vol. 241, No. 4, Oct. 1979; pp. 3, 62-70, 186.
Narayanamurti et al.-"Direct Observation of Phonons Generated During Nonradiative Capture in GaAs p-n Junctions", Physical Review Letters, vol. 40, No. 1, Jan. 2, 1978; pp. 63-66.
Narayanamurti et al.-"Symmetry of Donor Related Centers Responsible for Persistent Photoconductivity in Al.sub.x Ga.sub.1-x As", Physical Review Letters, vol. 43, No. 20, Nov. 12, 1979; pp. 1536-1539.
Narayanamurti et al.-"Selective Transmission of High-Frequency Phonons by a Superlattice: The Dielectric Phonon Filter", Physical Review Letters, vol. 43, No. 27, Dec. 31, 1979; pp. 2012-2016.

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