Patent · US Expired

Low loss electro-optic modulator mount

US4849719A · kind A · utility

6Cited by
9References
2Claims
0Family size

Assignee

Inventors

Key dates

Filing dateAug 21, 1984
Grant dateJul 18, 1989
Priority date—
Expiry dateAug 21, 2004

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02F1/0305
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

The crystal is solid CdTe or GaAs for modulating a laser beam. The mount comprises Al.sub.2 O.sub.3 or BeO ceramic between the crystal and a U-shaped aluminum housing on three sides to provide low stray capacitance and high thermal conductivity to the cooled housing. A layer of lead between the ceramic and the housing enhances the acoustic damping of the structure. Electrodes are attached to the crystal, with lead used to enhance dissipation of acoustic energy. in contacting flexible tabs on the electrodes with terminals no pressure or stress is transmitted to the crystal, thereby eliminating a problem of stress-induced birefringence.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.