公开(公告)号：US3873209A

公开(公告)日：1975-03-25

申请号：US42315073

申请日：1973-12-10

Applicant: BELL TELEPHONE LABOR INC

Inventor： SCHINKE DAVID PAUL ,  SMITH RICHARD GRANT

IPC: G01B11/06 ,  G01N21/43 ,  G01N21/46 ,  G02B5/14

CPC classification number: G01N21/43 ,  G01B11/0633

Abstract: In order to measure the thickness and refractive index of a transparent thin film on a substrate of higher refractive index, such as a film of silicon oxide on a substrate of silicon, an optical wave is coupled into and guided through the film. The guided wave is coupled into the film by means of the phenomenon of the tunneling into the film of an evanescent wave from a beam of light incident on the surface of an adjacent coupling medium at an angle greater than the critical angle for total internal reflection in the medium. The intensity minima of the optical radiation which can be coupled out of the film back into the coupling medium (overall reflection), as a function of angle, yields data from which the desired thickness and refractive index can be determined.

Abstract translation: 为了测量诸如硅衬底上的氧化硅膜的较高折射率的衬底上的透明薄膜的厚度和折射率，光波被耦合到膜中并引导穿过膜。 引导波通过从入射在相邻耦合介质表面上的光束以大于全内反射的临界角的角度穿透湮灭波的膜而被耦合到膜中 介质。 作为角度的函数，可以将膜耦合回到耦合介质（总体反射）的光辐射的强度最小值产生可以从其确定期望的厚度和折射率的数据。

公开(公告)号：US3701122A

公开(公告)日：1972-10-24

申请号：US3701122D

申请日：1971-08-25

Applicant: BELL TELEPHONE LABOR INC

Inventor： GEUSIC JOSEPH EDWARD ,  NELSON TERENCE JOHN ,  SCHINKE DAVID PAUL

IPC: G02F1/05 ,  G02F3/00 ,  G09G3/00 ,  G09G3/34 ,  G11C13/04 ,  G11C19/00 ,  G11C11/22

CPC classification number: G11C19/005 ,  G02F1/05 ,  G02F3/00 ,  G09G3/00 ,  G11C13/047

Abstract: Ferroelectric crystals which are also ferroelastic, such as gadolinium molybdate, can support stable internal ferroelectric polarization domains. These domains are expanded and moved in the ferroelectric crystal by means of a sequence of voltages applied to electrodes on the surface of the crystal. Thereby, optically readable, shift register logic functions are achieved using (for readout) an incident optical beam with respect to which the ferroelectric domains are birefringent.

Abstract translation: 也是铁弹性的铁电晶体，例如钼酸钆，可以支持稳定的内部铁电极化畴。 这些区域通过施加到晶体表面上的电极的电压序列在铁电晶体中扩展和移动。 因此，使用（用于读出）相对于铁电畴是双折射的入射光束来实现光学可读的移位寄存器逻辑功能。