公开(公告)号：US07198670B2

公开(公告)日：2007-04-03

申请号：US11038990

申请日：2005-01-20

申请人： Katuhiko Tokuda ,  Kazutomo Kadokura

发明人： Katuhiko Tokuda ,  Kazutomo Kadokura

IPC分类号： C30B33/06

CPC分类号： G02F1/3558 ,  Y10S117/902

摘要： A polarization inverting region is formed by using a board comprising a single crystal of lithium tatalate of a stoichiometric composition or near to the stoichiometric composition and applying a direct current electric field having an electric field intensity equal to or lower than 5 [kV/mm] for 1 [second] or longer. A periodically poled region can be formed without needing a complicated constitution for applying a pulse voltage or a complicated constitution for applying a strong electric field.

摘要翻译： 通过使用包含化学计量组成或接近化学计量组成的钛酸锂单晶的基板并施加电场强度等于或小于5 [kV / mm]的直流电场，形成极化反转区域， 1秒以上。 可以形成周期性极化区域，而不需要施加脉冲电压的复杂结构或用于施加强电场的复杂结构。

公开(公告)号：US07482175B2

公开(公告)日：2009-01-27

申请号：US11312308

申请日：2005-12-20

申请人： Katuhiko Tokuda ,  Kazutomo Kadokura

发明人： Katuhiko Tokuda ,  Kazutomo Kadokura

IPC分类号： H01L21/00

CPC分类号： G02F1/3558

摘要： A current is observed while applying a gradually increasing voltage between electrodes formed front and rear surfaces of a substrate, and then poled regions are formed by applying a DC voltage, which has a voltage value at that time or another voltage value obtained by adding a predetermined value to the voltage value (i.e., an inverted voltage value or a voltage value obtained by adding a predetermined voltage to the inverted voltage value), for a predetermined time when an inverted current is observed.

摘要翻译： 在形成基板的前表面和后表面的电极之间施加逐渐增加的电压，观察电流，然后通过施加具有该时间电压值的DC电压或通过添加预定的 的电压值（即，将反相电压值或通过将预定电压加到反相电压值而获得的电压值）的值与反相电流进行比较。

公开(公告)号：US20060292706A1

公开(公告)日：2006-12-28

申请号：US11312308

申请日：2005-12-20

申请人： Katuhiko Tokuda ,  Kazutomo Kadokura

发明人： Katuhiko Tokuda ,  Kazutomo Kadokura

IPC分类号： H01L21/00

CPC分类号： G02F1/3558

摘要： A current is observed while applying a gradually increasing voltage between electrodes formed front and rear surfaces of a substrate, and then poled regions are formed by applying a DC voltage, which has a voltage value at that time or another voltage value obtained by adding a predetermined value to the voltage value (i.e., an inverted voltage value or a voltage value obtained by adding a predetermined voltage to the inverted voltage value), for a predetermined time when an inverted current is observed.

公开(公告)号：US20050181525A1

公开(公告)日：2005-08-18

申请号：US11038990

申请日：2005-01-20

申请人： Katuhiko Tokuda ,  Kazutomo Kadokura

发明人： Katuhiko Tokuda ,  Kazutomo Kadokura

IPC分类号： G02F1/37 ,  G02F1/355 ,  H01L21/66

CPC分类号： G02F1/3558 ,  Y10S117/902

摘要： A polarization inverting region is formed by using a board comprising a single crystal of lithium tatalate of a stoichiometric composition or near to the stoichiometric composition and applying a direct current electric field having an electric field intensity equal to or lower than 5 [kV/mm] for 1 [second] or longer. A periodically poled region can be formed without needing a complicated constitution for applying a pulse voltage or a complicated constitution for applying a strong electric field.

摘要翻译： 通过使用包含化学计量组成或接近化学计量组成的钛酸锂单晶的基板并施加电场强度等于或小于5 [kV / mm]的直流电场，形成极化反转区域， 1秒以上。 可以形成周期性极化区域，而不需要施加脉冲电压的复杂结构或用于施加强电场的复杂结构。