公开(公告)号：DE19514517A1

公开(公告)日：1996-10-17

申请号：DE19514517

申请日：1995-04-12

Applicant: FORGENTA FORSCHUNGSTECHNIK UND

Inventor： THOENIS THOMAS DIPL ING ,  HAENDEL HEINZ DIPL ING

IPC: G02F1/03

Abstract: The modulator has at least two electrodes (2,3) esp. for generating a predetermined phase angle between two linearly polarised waves perpendicular to each other. An active solid state crystal (1) is arranged between two separate transparent surface electrodes. Each electrode may be attached to a substrate (4,5) esp. on the crystal side of the substrate (4,5). The distance between the crystal and the electrodes is preferably between 0 and tenths of a micron. An immersion fluid e.g. glycerine, may be provided between the crystal and the electrodes. The active crystal may have a thickness of one to two millimetres. The substrate and electrodes preferably pass light in the wavelength range of between 180 and 1500 nanometres. The substrate may be made of quartz glass or a transparent material.