Patent JPS5772533A successfully refreshed from Google Patents.
EP0409104A2
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Method of controlling the domain of a nonlinear ferroelectric optics substrate
Assignee: Sony Corp
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Filing: 1990-07-13
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Granted: —
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Expires: 2010-07-13
Abstract
Abstract A method of controlling the domain of a nonlinear ferroelectric optics substrate to form an inverted-domain structure in one major surface of a single-domain nonlinear ferroelectric optics substrate. A first electrode (11) is formed in a first major surface of a nonlinear ferroelectric optics substrate (1) in a pattern corresponding to a desired pattern of an inverted-domain structure to be formed, a second electrode (12) is formed on a second major surface opposite the first major surface in a pattern corresponding to that of the first electrode or in a solid film, a dc voltage or a pulse voltage is applied across the first and second electrodes to form local, inverted domains in the desired pattern in the first major surface of the nonlinear ferroelectric optics substrate. An insulating film may be formed between the first electrode and the first major surface to avoid damaging crystals of the nonlinear ferroelectric optics substrate by the current that flow across the nonlinear ferroelectric optics substrate when the dc voltage or the pulse voltage is applied across the first and second electrodes.
Inventors
- 👤 Masahiro Yamada
- 👤 Koichiro Kishima
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 04:48
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/35; G02F1/37; G02F1/377; G02F1/3775; G02F1/355; G02F1/3558; G02F1/353; G02F1/3544; G02F1/3548; G02F1/374; G02F2202/00; G02F2202/20
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
83 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate, comprising: forming a first electrode (11) and a second electrode (12) opposite to each other respectively on the opposite major surfaces of a single-domain nonlinear ferroelectric optics substrate (1), at least either the first electrode or the second electrode being formed in a given electrode pattern; and applying a given dc voltage across the first and second electrodes to form local, inverted domains in a pattern corresponding to the electrode pattern.
Claim 2
Independent Claim
83 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate, comprising: forming a first electrode (11) and a second electrode (12) opposite to each other respectively on the opposite major surfaces of a single-domain nonlinear ferroelectric optics substrate (1), at least either the first electrode or the second electrode being formed in a given electrode pattern; and applying a given dc voltage across the first and second electrodes to form local, inverted domains in a pattern corresponding to the electrode pattern.
Claim 3
Independent Claim
80 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate, comprising: forming a first electrode and a second electrode opposite to each other respectively on the opposite major surfaces of a single-domain nonlinear ferroelectric optics substrate, at least either the first electrode or the second electrode being formed in a given electrode pattern; and applying a given pulse voltage across the first and second electrodes to form local, inverted domains in a pattern corresponding to the electrode pattern.
Claim 4
Independent Claim
80 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate, comprising: forming a first electrode and a second electrode opposite to each other respectively on the opposite major surfaces of a single-domain nonlinear ferroelectric optics substrate, at least either the first electrode or the second electrode being formed in a given electrode pattern; and applying a given pulse voltage across the first and second electrodes to form local, inverted domains in a pattern corresponding to the electrode pattern.
Claim 5
Independent Claim
96 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate, comprising: forming a first electrode and a second electrode opposite to each other respectively on the opposite major surfaces of a single-domain nonlinear ferroelectric optics substrate, at least either the first electrode or the second electrode being formed in a given electrode pattern on an insulating layer formed on the corresponding major surface of the nonlinear ferroelectric optics substrate; and applying a given dc voltage across the first and second electrodes to form local, inverted domains in a pattern corresponding to the electrode pattern.
Claim 6
Independent Claim
96 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate, comprising: forming a first electrode and a second electrode opposite to each other respectively on the opposite major surfaces of a single-domain nonlinear ferroelectric optics substrate, at least either the first electrode or the second electrode being formed in a given electrode pattern on an insulating layer formed on the corresponding major surface of the nonlinear ferroelectric optics substrate; and applying a given dc voltage across the first and second electrodes to form local, inverted domains in a pattern corresponding to the electrode pattern.
Claim 7
Independent Claim
96 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate, comprising: forming a first electrode and a second electrode opposite to each other respectively on the opposite major surfaces of a single-domain nonlinear ferroelectric optics substrate, at least either the first electrode or the second electrode being formed in a give electrode pattern on an insulating layer formed on the corresponding major surface of the nonlinear ferroelectric optics substrate; and applying a given pulse voltage across the first and second electrodes to form local, inverted domains in a pattern corresponding to the electrode pattern.
Claim 8
Independent Claim
96 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate, comprising: forming a first electrode and a second electrode opposite to each other respectively on the opposite major surfaces of a single-domain nonlinear ferroelectric optics substrate, at least either the first electrode or the second electrode being formed in a give electrode pattern on an insulating layer formed on the corresponding major surface of the nonlinear ferroelectric optics substrate; and applying a given pulse voltage across the first and second electrodes to form local, inverted domains in a pattern corresponding to the electrode pattern.
Claim 9
Independent Claim
87 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate, comprising: forming heating electromagnetic wave absorbing films or heating electromagnetic wave reflecting films in a predetermined pattern on a major surface of a single-domain nonlinear ferroelectric optics substrate; and heating the nonlinear ferroelectric optics substrate by an electromagnetic wave to form local, inverted domains in a pattern corresponding to that of the heating electromagnetic wave absorbing films or the heating electromagnetic wave reflecting films in the corresponding major surface of the nonlinear ferroelectric optics substrate.
Claim 10
Independent Claim
87 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate, comprising: forming heating electromagnetic wave absorbing films or heating electromagnetic wave reflecting films in a predetermined pattern on a major surface of a single-domain nonlinear ferroelectric optics substrate; and heating the nonlinear ferroelectric optics substrate by an electromagnetic wave to form local, inverted domains in a pattern corresponding to that of the heating electromagnetic wave absorbing films or the heating electromagnetic wave reflecting films in the corresponding major surface of the nonlinear ferroelectric optics substrate.
Claim 11
Dependent Claim
46 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate according to Claim 1, wherein the dc voltage is applied across the first and second electrodes while the nonlinear ferroelectric optics substrate is heated at a temperature in the range of 150 to 200°C.
Claim 12
Dependent Claim
46 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate according to Claim 2, wherein the pulse voltage is applied across the first and second electrodes while the nonlinear ferroelectric optics substrate is heated at a temperature in the range of 150 to 200°C.
Claim 13
Dependent Claim
46 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate according to Claim 3, wherein the dc voltage is applied across the first and second electrodes while the nonlinear ferroelectric optics substrate is heated at a temperature in the range of 150 to 200°C.
Claim 14
Dependent Claim
46 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate according to Claim 4, wherein the pulse voltage is applied across the first and second electrodes while the nonlinear ferroelectric optics substrate is heated at a temperature in the range of 150 to 200°C.
Claim 15
Dependent Claim
37 words
10 A method of controlling the domain of a nonlinear ferroelectric optics substrate according to Claim 1, wherein the dc voltage is in the range of several tens volts per centimeter to several hundreds volts per centimeter.
Claim 16
Dependent Claim
35 words
A method of controlling the domain of a nonlinear ferroelectric substrate according to Claim 3, wherein the dc voltage is in the range of several tens volts per centimeter to several hundreds volts per centimeter.
Claim 17
Dependent Claim
36 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate according to Claim 2, wherein the pulse voltage is in the range of several hundreds volts per centimeter to several hundreds kilovolts per centimeter.
Claim 18
Dependent Claim
36 words
A method of controlling the domain of a nonlinear ferroelectric optics body according to Claim 4, wherein the pulse voltage is in the range of several hundreds volts per centimeter to several hundreds kilovolts per centimeter.
Claim 19
Dependent Claim
34 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate according to Claim 3, wherein said insulating layer is formed of at least one of Al₂O₃, Si x N y or SiO₂.
Claim 20
Dependent Claim
34 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate according to Claim 4, wherein said insulating layer is formed of at least one of Al₂O₃, Si x N y or SiO₂.
Claim 21
Dependent Claim
34 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate according to Claim 2, wherein the pulse width of said pulse voltage is in the range of several microseconds to several minutes.
Claim 22
Dependent Claim
34 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate according to Claim 4, wherein the pulse width of said pulse voltage is in the range of several microseconds to several minutes.
Claim 23
Dependent Claim
26 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate according to Claim 2, wherein said pulse voltage is applied once to ten times.
Claim 24
Dependent Claim
26 words
A method of controlling the domain of a nonlinear ferroelectric optics body according to Claim 4, wherein said pulse voltage is applied once to ten times.
Claim 25
Dependent Claim
43 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate according to Claim 5, wherein the nonlinear ferroelectric optics substrate is heated at a heating rate of 5°C/min or higher and is cooled at a cooling rate of 5°C/min or higher.
Claim 26
Dependent Claim
35 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate according to Claim 1, wherein the pitch of the strips forming the electrode pattern is in the range of 0.1 to 500 µm.
Claim 27
Dependent Claim
35 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate according to Claim 2, wherein the pitch of the strips forming the electrode pattern is in the range of 0.1 to 500 µm.
Claim 28
Dependent Claim
35 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate according to Claim 3, wherein the pitch of the strips forming the electrode pattern is in the range of 0.1 to 500 µm.
Claim 29
Dependent Claim
35 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate according to Claim 4, wherein the pitch of the strips forming the electrode pattern is in the range of 0.1 to 500 µm.
Claim 30
Dependent Claim
35 words
A method of controlling the domain of a nonlinear ferroelectric optics substrate according to claim 5, wherein the pitch of the strips forming the electrode pattern is in the range of 0.1 to 500 µm.
References Cited (Backward Citations)
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