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公开(公告)号：US20110032597A1
公开(公告)日：2011-02-10
申请号：US12664193
申请日：2008-06-11
IPC分类号： G02F1/355
CPC分类号： G02F1/3558 , G02F2001/3548 , G02F2202/07
摘要： A method of inducing a periodic variation of nonlinearity value in a sample of ferroelectric material comprises arranging a pair of electrodes on opposite faces of the sample, one electrode defining a desired pattern of nonlinearity variation, applying a pre-bias voltage across the sample for a predetermined time using the electrodes, the pre-bias voltage being less than the coercive field of the ferroelectric material; and after the predetermined time, applying a current-controlled poling voltage across the sample using the electrodes, to produce domain inversion in the sample according to the desired pattern of nonlinearity variation. The pre-bias voltage may be 75% of the coercive field or more, and applied for a pre-determined time between 1 and 100 seconds.
摘要翻译： 在铁电材料样品中引起非线性值的周期性变化的方法包括在样品的相对面上布置一对电极，一个电极限定期望的非线性变化图案，在样品上施加预偏置电压 使用电极的预定时间，预偏置电压小于铁电材料的矫顽场; 并且在预定时间之后，使用电极在样品上施加电流控制极化电压，以根据期望的非线性变化模式在样品中产生域反转。 预偏置电压可以是矫顽场的75％或更多，并且施加在1和100秒之间的预定时间。
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公开(公告)号：US08054536B2
公开(公告)日：2011-11-08
申请号：US12664193
申请日：2008-06-11
CPC分类号： G02F1/3558 , G02F2001/3548 , G02F2202/07
摘要： A method of inducing a periodic variation of nonlinearity value in a sample of ferroelectric material comprises arranging a pair of electrodes on opposite faces of the sample, one electrode defining a desired pattern of nonlinearity variation, applying a pre-bias voltage across the sample for a predetermined time using the electrodes, the pre-bias voltage being less than the coercive field of the ferroelectric material; and after the predetermined time, applying a current-controlled poling voltage across the sample using the electrodes, to produce domain inversion in the sample according to the desired pattern of nonlinearity variation. The pre-bias voltage may be 75% of the coercive field or more, and applied for a pre-determined time between 1 and 100 seconds.
摘要翻译： 在铁电材料样品中引起非线性值的周期性变化的方法包括在样品的相对面上布置一对电极，一个电极限定期望的非线性变化图案，在样品上施加预偏置电压 使用电极的预定时间，预偏置电压小于铁电材料的矫顽场; 并且在预定时间之后，使用电极在样品上施加电流控制极化电压，以根据期望的非线性变化模式在样品中产生域反转。 预偏置电压可以是矫顽场的75％或更多，并且施加在1和100秒之间的预定时间。
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公开(公告)号：US20110063719A1
公开(公告)日：2011-03-17
申请号：US12864297
申请日：2009-01-16
CPC分类号： G02F1/3544 , G02F1/3775 , G02F1/39
摘要： A sample of nonlinear optical material for use in a nonlinear optical device contains a grating comprising alternating regions of inverted and non-inverted nonlinear coefficient of the material, with the regions separated by boundaries positioned such that the grating can provide quasi-phase matching of a selected nonlinear optical interaction, and compensate for phase mismatch arising from the Gouy phase shift of one or more focused optical beams involved in the interaction. The boundary positions can be calculated for second harmonic generation or optical parametric generation and oscillation.
摘要翻译： 用于非线性光学器件的非线性光学材料的样本包含光栅，其包括材料的反相和非反相非线性系数的交替区域，其中由边界分隔的区域定位成使得光栅可以提供准相位匹配 选择的非线性光学相互作用，并且补偿由相互作用中涉及的一个或多个聚焦光束的Gouy相移引起的相位偏移。 可以计算二次谐波产生或光参量产生和振荡的边界位置。
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公开(公告)号：US08625189B2
公开(公告)日：2014-01-07
申请号：US12864297
申请日：2009-01-16
IPC分类号： G02F1/35
CPC分类号： G02F1/3544 , G02F1/3775 , G02F1/39
摘要： A sample of nonlinear optical material for use in a nonlinear optical device contains a grating comprising alternating regions of inverted and non-inverted nonlinear coefficient of the material, with the regions separated by boundaries positioned such that the grating can provide quasi-phase matching of a selected nonlinear optical interaction, and compensate for phase mismatch arising from the Gouy phase shift of one or more focused optical beams involved in the interaction. The boundary positions can be calculated for second harmonic generation or optical parametric generation and oscillation.
摘要翻译： 用于非线性光学器件的非线性光学材料的样本包含光栅，其包括材料的反相和非反相非线性系数的交替区域，其中由边界分隔的区域定位成使得光栅可以提供准相位匹配 选择的非线性光学相互作用，并补偿由相互作用中涉及的一个或多个聚焦光束的Gouy相移引起的相位偏移。 可以计算二次谐波产生或光参量产生和振荡的边界位置。
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公开(公告)号：US08064129B2
公开(公告)日：2011-11-22
申请号：US12735478
申请日：2009-02-09
IPC分类号： G02F1/23
CPC分类号： G02F1/3558 , G02F1/3775
摘要： A process for poling a ferroelectric material doped with a metal, which process comprises: (i) defining an electrode pattern on a −z face of a crystal of the ferroelectric material doped with the metal; (ii) providing an electrode material; (iii) poling at a temperature of not more than 45° C.; and (iv) poling by a two-stage voltage-controlled application of electric field based on a first poling stage of domain nucleation and a second poling stage of domain spreading.
摘要翻译： 一种用于极化掺杂有金属的铁电材料的方法，该方法包括：（i）在掺杂有金属的铁电材料的晶体的-z面上限定电极图案; （ii）提供电极材料; （iii）在不超过45℃的温度下极化; 和（iv）基于区域成核的第一极化阶段和域扩展的第二极化阶段的两阶段电压控制施加电场的极化。
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公开(公告)号：US20100288983A1
公开(公告)日：2010-11-18
申请号：US12735478
申请日：2009-02-09
IPC分类号： G02F1/23
CPC分类号： G02F1/3558 , G02F1/3775
摘要： A process for poling a ferroelectric material doped with a metal, which process comprises: (i) defining an electrode pattern on a −z face of a crystal of the ferroelectric material doped with the metal; (ii) providing an electrode material; (iii) poling at a temperature of not more than 45° C.; and (iv) poling by a two-stage voltage-controlled application of electric field based on a first poling stage of domain nucleation and a second poling stage of domain spreading.
摘要翻译： 一种用于极化掺杂有金属的铁电材料的方法，该方法包括：（i）在掺杂有金属的铁电材料的晶体的-z面上限定电极图案; （ii）提供电极材料; （iii）在不超过45℃的温度下极化; 和（iv）基于区域成核的第一极化阶段和域扩展的第二极化阶段的两阶段电压控制施加电场的极化。
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