Accession Number:

ADA030602

Title:

An Investigation of the Possible Application of Laser Trimming to Acoustical Transducers.

Descriptive Note:

Technical rept.,

Corporate Author:

ROME AIR DEVELOPMENT CENTER GRIFFISS AFB N Y

Personal Author(s):

Report Date:

1976-07-01

Pagination or Media Count:

12.0

Abstract:

An experimental investigation has been made of the possibility of using a laser to remove shorts and to trim lengths of high frequency interdigital transducers. Such a laser is required to have the capability of removing pieces of the metallic electrodes in increments of 1 sq micron or less. The experiment was performed on a 1000 A thick aluminum layer on top of a 300 A thick chromium layer on a quartz substrate which is a typical coating used for making interdigital transducers. Using a doubled NdYAG laser wavelength 0.532 micron with a pulse of about 100 nsec it was found that holes of area 1 sq micro could be punched with a pulse energy of about 1 microjoule. Author

Subject Categories:

  • Electrical and Electronic Equipment
  • Lasers and Masers
  • Fabrication Metallurgy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE