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1.发明授权
公开(公告)号：US5028107A
公开(公告)日：1991-07-02
申请号：US514384
申请日：1990-04-25
CPC分类号： G02F1/3775 , G02F1/37 , G02F1/3553 , G02F2001/3548
摘要： Articles and process for wavelength conversion are disclosed which use a series of aligned sections of optical materials which are suitably balanced over the series with regard to the section length and the section .DELTA.k (i.e. the difference between the sum of the propagation constants for the incident waves and the sum of the propagation constants for the waves generated). The sections are selected such that the sum for the series of the product of the length of each section with the .DELTA.k is equal to about zero, and the length of each section is less than its coherence length. Embodiments are disclosed wherein at least one of the optical materials is optically nonlinear and/or wherein a layer of nonlinear optical material is provided adjacent to the series of sections. Also disclosed is a process for preparing a channel waveguide for wavelength conversion systems wherein areas along a portion of a crystal substrate surface used for forming the desired channel are alternately masked and unmasked during cation replacement by immersion in a molten salt.
摘要翻译： 公开了用于波长转换的制品和方法，其使用一系列对准的光学材料部分，其相对于截面长度和截面DELTA k在该系列上适当平衡（即，事件传播常数之和之间的差异 波和产生的波的传播常数的和）。 这些部分被选择为使得具有DELTA k的每个部分的长度的乘积的序列的总和等于大约零，并且每个部分的长度小于其相干长度。 公开了实施例，其中至少一个光学材料是光学非线性的，和/或其中非线性光学材料层被提供为与该系列部分相邻。 还公开了一种制备用于波长转换系统的通道波导的方法，其中沿着用于形成所需通道的晶体衬底表面的一部分的区域在通过浸入熔融盐中进行阳离子替换期间被交替地掩蔽并被掩蔽。
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公开(公告)号：US4740265A
公开(公告)日：1988-04-26
申请号：US1417
申请日：1987-01-08
CPC分类号： G02F1/3553 , C30B29/22 , C30B33/00 , G02B6/13 , G02B6/1345
摘要： There is disclosed a process for producing an optical waveguide comprising contacting at least one optically smooth surface of a single crystal of K.sub.1-x Rb.sub.x TiOMO.sub.4 wherein x is from 0 to 1 and M is P or As with a specified molten salt of at least one of Rb, Cs and Tl at a temperature of from about 200.degree. C. to about 600.degree. C. for a time sufficient to increase the surface index of refraction at least about 0.00025 with respect to the index of refraction of the starting crystal, and cooling the resulting crystal. The product made thereby and a waveguide device using the same are also disclosed.
摘要翻译： 公开了一种用于制造光波导的方法，包括使K1-xRbxTiOMO4的单晶的至少一个光学平滑表面接触，其中x为0至1，M为P或As，并与Rb的至少一种的规定熔融盐接触 ，Cs和T1在约200℃至约600℃的温度下进行足以使折射率的表面折射率相对于起始晶体的折射率至少约0.00025的时间，并冷却 结晶。 由此制成的产品和使用该产品的波导装置也被公开。
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公开(公告)号：US5266092A
公开(公告)日：1993-11-30
申请号：US894669
申请日：1992-06-05
IPC分类号： G02B6/134 , C03B37/075 , B01J17/24
CPC分类号： G02B6/1345
摘要： There is disclosed an optical waveguide comprising a K.sub.1-x Rb.sub.x TiOmO.sub.4 single crystal substrate, wherein x is from 0 to 1 and M is P or As, having at least one optically smooth surface wherein sufficient K.sup.+ and/or Rb.sup.+ have been replaced by ions selected from at least one of H.sup.+ and NH.sub.4.sup.+ and, optionally, at least one monovalent ion selected from Rb.sup.+, Cs.sup.+, Tl.sup.+, and/or at least one divalent ion selected from Ba.sup.+2, Sr.sup.+2, Ca.sup.+2 and Pb.sup.+2 to chance the surface index of refraction at least a 0.00025 with respect to the index of refraction of the single crystal substrate. One process disclosed for producing an optical waveguide comprises the steps of contacting at least one optically smooth surface of a single crystal of K.sub.1-x Rb.sub.x TiOmO.sub.4 with an ion exchange medium capable of supplying said replacement ions, at a temperature of from about 100.degree. C. to about 600.degree. C. for a time sufficient to increase the surface index of refraction at least about 0.00025 with respect to the index of refraction of the single crystal by replacing K.sup.+ and/or Rb.sup.+ of said single crystal with said ions supplied by the exchange medium, and cooling the resulting crystal. Another process disclosed for producing an optical waveguide comprises the step of applying a DC voltage of from about 20 V per cm of crystal thickness to about 2000 V per cm of crystal thickness across the z-surfaces of a z-cut K.sub.1-x Rb.sub.x TiOmO.sub.4 single crystal, in the presence of a proton source at a temperature of from about -40.degree. C. to 400.degree. C. for a time sufficient to raise the index of refraction underneath the anode by at least 0.00025 with respect to the index of refraction of the single crystal by replacing K.sup.+ and/or Rb.sup.+ of said single crystal with H.sup.+. A nonlinear optic device using the optical waveguide of the invention is also disclosed.
摘要翻译： 公开了一种包括K1-xRbxTiOmO4单晶衬底的光波导，其中x为0至1，M为P或As，具有至少一个光学平滑表面，其中足够的K +和/或Rb +已被 选自Rb +，Cs +，Tl +和/或至少一种选自Ba + 2，Sr + 2，Ca + 2和Pb + 2的二价离子中的至少一种H +和NH 4 +，以及任选的至少一种一价离子， 相对于单晶衬底的折射率，表面折射率几率为0.00025以上。 公开的用于制造光波导的一个方法包括以下步骤：将K1-xRbxTiOmO4的单晶的至少一个光学光滑表面与能够提供所述置换离子的离子交换介质在约100℃至 约600℃，足以通过用由交换介质提供的所述离子代替所述单晶的K +和/或Rb +而使表面折射率相对于单晶的折射率提高至少约0.00025的时间 ，并冷却所得晶体。 公开的用于制造光波导的另一方法包括以下步骤：在z切割的K1-xRbxTiOmO4单晶的z面上施加约20V / cm晶体厚度的直流电压至约2000V / cm的晶体厚度 在质子源的存在下，在约-40℃至400℃的温度下，足以使阳极下方的折射率相对于折射率的至少0.00025提高的时间 通过用H +代替所述单晶的K +和/或Rb +的单晶。 还公开了使用本发明的光波导的非线性光学装置。
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公开(公告)号：US5243676A
公开(公告)日：1993-09-07
申请号：US762691
申请日：1991-09-19
CPC分类号： G02F1/3775 , G02F1/3553 , G02F2001/3548 , G02F2201/307
摘要： Segmented waveguides for wavelength conversion (e.g., waveguides comprising alternating sections of crystalline substrate having the formula K.sub.1-x Rb.sub.x TiOMO.sub.4 where x is from 0 to 1 and M is P or As and sections of substrate material in which cations of said substrate have been partially replaced) and devices and processes employing segmented waveguides for wavelength conversion are disclosed wherein a periodic structure along the waveguide provides a Bragg reflection having a wavelength essentially equal to the wavelength of the input wave used for wavelength conversion. Also disclosed is a process for preparing a channel waveguide for a wavelength conversion system wherein areas along a portion of a crystal substrate surface used for forming the desired channel are alternately masked and unmasked during cation replacement by immersion in a molten salt.
摘要翻译： 用于波长转换的分段波导（例如，包括具有式K1-xRbxTiOMO4的晶体衬底的交替部分的波导，其中x为0至1，M为P或As，并且其中所述衬底的阳离子已部分替代的衬底材料部分） 并且公开了使用用于波长转换的分段波导的装置和工艺，其中沿着波导的周期性结构提供具有基本上等于用于波长转换的输入波的波长的波长的布拉格反射。 还公开了一种制备用于波长转换系统的通道波导的方法，其中沿着用于形成所需通道的晶体衬底表面的一部分的区域在通过浸入熔融盐中进行阳离子置换期间被交替地掩蔽并被掩蔽。
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公开(公告)号：US5393561A
公开(公告)日：1995-02-28
申请号：US36376
申请日：1993-03-24
CPC分类号： G02F1/3775 , G02F1/3553 , G02F2001/3548 , G02F2201/307
摘要： Segmented waveguides for wavelength conversion (e.g., waveguides comprising alternating sections of crystalline substrate having the formula K.sub.1-x Rb.sub.x TiOMO.sub.4 where x is from 0 to 1 and M is P or As and sections of substrate material in which cations of said substrate have been partially replaced) and devices and processes employing segmented waveguides for wavelength conversion are disclosed wherein a periodic structure along the waveguide provides a Bragg reflection having a wavelength essentially equal to the wavelength of the input wave used for wavelength conversion. Also disclosed is a process for preparing a channel waveguide for a wavelength conversion system wherein areas along a portion of a crystal substrate surface used for forming the desired channel are alternately masked and unmasked during cation replacement by immersion in a molten salt.
摘要翻译： 用于波长转换的分段波导（例如，包括具有式K1-xRbxTiOMO4的晶体衬底的交替部分的波导，其中x为0至1，M为P或As，并且其中所述衬底的阳离子已部分替代的衬底材料部分） 并且公开了使用用于波长转换的分段波导的装置和工艺，其中沿着波导的周期性结构提供具有基本上等于用于波长转换的输入波的波长的波长的布拉格反射。 还公开了一种制备用于波长转换系统的通道波导的方法，其中沿着用于形成所需通道的晶体衬底表面的一部分的区域在通过浸入熔融盐中进行阳离子置换期间被交替地掩蔽并被掩蔽。
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6.发明授权Increasing the birefringence of KTP and its isomorphs for type II phase matching 失效增加KTP及其同态II型相位匹配的双折射
公开(公告)号：US5311352A
公开(公告)日：1994-05-10
申请号：US995439
申请日：1992-12-23
申请人： John D. Bierlein , Lap K. Cheng , Lap-Tak A. Cheng
发明人： John D. Bierlein , Lap K. Cheng , Lap-Tak A. Cheng
CPC分类号： G02F1/3553
摘要： Method and device for wavelength conversion using type II phase matching are characterized by employing a crystal consisting essentially of doped MTiOXO.sub.4 (wherein M is K, Rb and/or Tl and X is P and/or As) containing Fe, Nb and/or Ta dopant in an amount, totalling at least about 100 ppm, effective to increase the n.sub.z -n.sub.x optical birefringence of the doped crystal at least about 0.001 compared to a crystal without the dopant. Generation of output waves of an optical birefringence higher than the highest corresponding optical birefringence of a crystal without the dopant is disclosed. Among the useful crystals are crystals consisting essentially of doped MTiOXO.sub.4 containing at least about 100 ppm Ta.
摘要翻译： 使用II型相位匹配的波长转换的方法和装置的特征在于采用基本上由掺杂的MTiOXO4（其中M是K，Rb和/或T1，X是P和/或As）的晶体，其含有Fe，Nb和/或Ta 掺杂剂的总量至少约100ppm，与不掺杂剂的晶体相比，有效地将掺杂晶体的nz-nx光学双折射率提高至少约0.001。 公开了高于没有掺杂剂的晶体的最高对应的光学双折射的光学双折射的输出波的产生。 有用的晶体是基本上由含有至少约100ppm Ta的掺杂MTiOXO4组成的晶体。
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7.发明授权Wavelength conversion by quasi phase matching and the manufacture and use of optical articles therefor 失效通过准相位匹配的波长转换及其光学制品的制造和使用
公开(公告)号：US5157754A
公开(公告)日：1992-10-20
申请号：US732028
申请日：1991-07-18
CPC分类号： G02F1/37 , G02F1/3775 , G02F1/3553 , G02F2001/3548
摘要： Articles and process for wavelength conversion are disclosed which use a series of aligned sections of optical materials for wavelength conversion selected from materials having the formula K.sub.1-x Rb.sub.x TiOMO.sub.4 where x is from 0 to 1 and M is selected from P and As and materials of said formula wherein the cations of said formula have been partially replaced by at least one of Rb.sup.+, Tl.sup.+ and Cs.sup.+, and at least one of Ba.sup.++, Sr.sup.++ and Ca.sup.++. The series of sections is characterized with regard to a change in nonlinear optical coefficient, section length, and section .DELTA.k (i.e., the difference between the sum of the propagation constants for the incident waves and the sum of the propagation constants for the waves generated). The sections are selected such that the sum for the series of the product of the length of each section with the .DELTA.k is equal to about 2.pi.N (where N is an integer other than zero) and the nonlinear optical coefficient for at least one section is changed relative to the nonlinear optical coefficient for at least one adjacent section. Also disclosed is a process for preparing a channel waveguide for wavelength conversion systems wherein areas along a portion of a crystal substrate surface used for forming the desired channel are alternately masked and unmasked during cation replacement by immersion in a molten salt.
摘要翻译： 公开了用于波长转换的制品和方法，其使用一系列用于波长转换的光学材料的对准部分，其选自具有式K1-xRbxTiOMO4的材料，其中x为0至1，M选自P和As，并且所述式 其中所述式的阳离子已经被Rb +，Tl +和Cs +中的至少一种以及Ba ++，Sr ++和Ca ++中的至少一种部分替代。 关于非线性光学系数，截面长度和截面DELTA k的变化（即，入射波的传播常数之和与产生的波的传播常数的和之间的差异，该系列的部分被表征 ）。 这些部分被选择为使得具有DELTA k的每个部分的长度的乘积的序列的和等于大约2pi N（其中N是除零之外的整数），并且至少一个的非线性光学系数 截面相对于至少一个相邻部分的非线性光学系数而改变。 还公开了一种制备用于波长转换系统的通道波导的方法，其中沿着用于形成所需通道的晶体衬底表面的一部分的区域在通过浸入熔融盐中进行阳离子替换期间被交替地掩蔽并被掩蔽。
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公开(公告)号：US5146533A
公开(公告)日：1992-09-08
申请号：US738775
申请日：1991-08-01
CPC分类号： G02B6/1345 , Y10S117/918
摘要： There is disclosed an optical waveguide comprising a K.sub.1-x Rb.sub.x TiOMO.sub.4 single crystal substrate, wherein x is from 0 to 1 and M is P or As, having at least one optically smooth surface wherein sufficient K.sup.+ and/or Rb.sup.+ have been replaced by ions selected from at least one of H.sup.+ and NH.sub.4.sup.+ and, optionally, at least one monovalent ion selected from Rb.sup.+, Cs.sup.+, Tl.sup.+, and/or at least one divalent ion selected from Ba.sup.+2, Sr.sup.+2, Ca.sup.+2 and Pb.sup.+2 change the surface index of refraction at least about 0.00025 with respect to the index of refraction of the single crystal substrate. One process disclosed for producing an optical waveguide comprises the steps of contacting at least one optically smooth surface of a single crystal of K.sub.1-x Rb.sub.x TiOMO.sub.4 with an ion exchange medium capable of supplying said replacement ions for sufficient time at a temperature of from about 100.degree. C. to about 600.degree. C., and cooling the resulting crystal. Another process disclosed for producing an optical waveguide comprises the step of applying a DC voltage of from about 20 V per cm of crystal thickness to about 2000 V per cam of crystal thickness across the z-surfaces of a z-cut K.sub.1-x Rb.sub.x TiOMO.sub.4 single crystal, in the presence of a proton source for sufficient time at a temperature of from about -40.degree. C. to 400.degree. C. A nonlinear optic device using the optical waveguide of the invention is also disclosed.
摘要翻译： 公开了一种包括K1-xRbxTiOMO4单晶衬底的光波导，其中x为0至1，M为P或As，具有至少一个光学平滑表面，其中足够的K +和/或Rb +已经被选自 选自Rb +，Cs +，Tl +和/或至少一种选自Ba + 2，Sr + 2，Ca + 2和Pb + 2的二价离子中的至少一种选自H +和NH4 +，以及任选的至少一种一价离子 表面折射率相对于单晶衬底的折射率至少约为0.00025。 公开的用于制造光波导的一个方法包括以下步骤：将K1-xRbxTiOMO4的单晶的至少一个光学光滑表面与能够在约100℃的温度下供应所述置换离子足够的时间的离子交换介质 至约600℃，并冷却所得晶体。 公开的用于制造光波导的另一种方法包括以下步骤：在z切割的K1-xRbxTiOMO4单晶的z表面上施加每厘米晶体厚度约20V的DC电压至约2000V 在约-40℃至400℃的温度下存在质子源足够的时间。还公开了使用本发明的光波导的非线性光学器件。
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公开(公告)号：US5084206A
公开(公告)日：1992-01-28
申请号：US473771
申请日：1990-02-02
摘要： A composition is disclosed which consists essentially of doped crystalline MTiOXO.sub.4 (wherein M is selected from the group consisting of K, Rb and Tl, X is selected from the group consisting of P and As) which contain at least about 100 ppm total of at least one dopant selected from the group consisting of Ga, Al and Si. The compositions generally have low ionic conductivity, and may be prepared using an improved flux process wherein Ga, Al and/or Si dopant is added to the flux in a total amount of at least about 0.5 mole % and the crystallization temperature is controlled to provide a crystalline composition containing the desired amount of dopant.
摘要翻译： 公开了一种组合物，其基本上由掺杂的结晶MTiOXO4（其中M选自K，Rb和T1，X选自P和As），其含有至少约100ppm总计至少 一种掺杂剂选自Ga，Al和Si。 组合物通常具有低离子导电性，并且可以使用改进的焊剂工艺制备，其中将Ga，Al和/或Si掺杂剂以总量至少约0.5摩尔％加入焊剂中，并且控制结晶温度以提供 含有所需量的掺杂剂的结晶组合物。
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公开(公告)号：US4766954A
公开(公告)日：1988-08-30
申请号：US129058
申请日：1987-12-11
CPC分类号： G02F1/3553 , C30B29/22 , C30B33/00 , G02B6/13 , G02B6/1345
摘要： There is disclosed a process for producing an optical waveguide comprising contacting at least one optically smooth surface of a single crystal of K.sub.1-x Rb.sub.x TiOMO.sub.4 wherein x is from 0 to 1 and M is P or As with a specified molten salt of at least one of Rb, Cs and Tl at a temperature of from about 200.degree. C. to about 600.degree. C. for a time sufficient to increase the surface index of refraction at least about 0.00025 with respect to the index of refraction of the starting crystal, and cooling the resulting crystal. The product made thereby and a waveguide device using the same are also disclosed.
摘要翻译： 公开了一种用于制造光波导的方法，包括使K1-xRbxTiOMO4的单晶的至少一个光学平滑表面接触，其中x为0至1，M为P或As，并与Rb的至少一种的规定熔融盐接触 ，Cs和T1在约200℃至约600℃的温度下进行足以使折射率的表面折射率相对于起始晶体的折射率至少约0.00025的时间，并冷却 结晶。 由此制成的产品和使用该产品的波导装置也被公开。
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