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1.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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公开(公告)号：US5053641A
公开(公告)日：1991-10-01
申请号：US379781
申请日：1989-07-14
申请人： Lap K. Cheng , Walter R. Bosenberg , Chung L. Tang
发明人： Lap K. Cheng , Walter R. Bosenberg , Chung L. Tang
IPC分类号： G02F1/39
CPC分类号： G02F1/39
摘要： The operation of a .beta.-BaB.sub.2 O.sub.4 optical parametric oscillator is disclosed. The oscillator is tunable in the visible and near infrared. For example, a .beta.-BaB.sub.2 O.sub.4 crystal 10.5.times.10.5 nm.sup.2 .times.11.5 mm, cut at .theta.=30.degree. was pumped at 354.7 mm, and was tunable through 0.45-1.68 .mu.m, with a total energy conversion efficiency of 9.4%.
摘要翻译： 公开了β-BaB2O4光学参量振荡器的操作。 振荡器可见可见光和近红外。 例如，在θ= 30°切割的10.5×10 5 nm 2×11.5mm的β-BuB 2 O 4晶体以354.7mm泵送，并且可调谐为0.45-1.68μm，总能量转换效率为9.4％。
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公开(公告)号：US5579152A
公开(公告)日：1996-11-26
申请号：US375106
申请日：1995-01-19
IPC分类号： G02F1/39
CPC分类号： G02F1/39 , G02F2001/3542 , G02F2001/392
摘要： A broadly tunable femtosecond optical parametric generator includes a cavity having a pumping section in which is located a nonlinear crystal selected from the group CTA and RTA, cut for noncritical phasematching. The plane of the optical x axis and or the optical y axis of the crystal is aligned with the axis of the pumping section. A Ti:S laser pumping beam is directed into the pumping section either collinearly or noncollinearly with the pumping section axis and impinges on the crystal to produce signal and idler beams. The laser is tunable to produce OPO output beams between about 1 and 4 .mu.m.
摘要翻译： 广泛可调的飞秒光学参数发生器包括具有泵送部分的空腔，其中位于从CTA组和RTA组中选择的非线性晶体，用于非临界相互作用。 光学x轴的平面和/或晶体的光学y轴与泵送部分的轴线对准。 Ti：S激光泵浦光束与泵浦部分轴线共线或非共线地引导到泵送部分，并撞击在晶体上以产生信号和惰轮。 激光器可调，以产生约1至4微米的OPO输出光束。
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公开(公告)号：US5480569A
公开(公告)日：1996-01-02
申请号：US228615
申请日：1994-04-15
申请人： Albert A. Ballman , Lap K. Cheng
发明人： Albert A. Ballman , Lap K. Cheng
摘要： Doped crystalline compositions (e.g., single domain crystals) of MTiOAsO.sub.4 (wherein M is K, Rb and/or Cs) are disclosed which contain at least about 10 ppm total of Fe, Sc and/or In dopant. Also disclosed is a flux process which is characterized by adding said dopant to a melt containing the components for forming MTiOAsO.sub.4, in an amount effective to provide a doped single domain crystal of MTiOAsO.sub.4 containing at least 10 ppm of said dopant.
摘要翻译： 公开了MTiOAsO4（其中M为K，Rb和/或Cs）的掺杂结晶组合物（例如，单结晶体晶体），其含有至少约10ppm的Fe，Sc和/或In掺杂剂。 还公开了一种助焊剂工艺，其特征在于将所述掺杂剂加入含有用于形成MTiOAsO 4的组分的熔体中，其量有效地提供含有至少10ppm所述掺杂剂的MTiOAsO 4的掺杂单结晶体晶体。
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公开(公告)号：US5326423A
公开(公告)日：1994-07-05
申请号：US954174
申请日：1992-09-30
申请人： Albert A. Ballman , Lap K. Cheng
发明人： Albert A. Ballman , Lap K. Cheng
摘要： Doped crystalline compositions (e.g., single domain crystals) of MTiOAsO.sub.4 (wherein M is K, Rb and/or Cs) are disclosed which contain at least about 10 ppm total of Fe, Sc and/or In dopant. Also disclosed is a flux process which is characterized by adding said dopant to a melt containing the components for forming MTiOAsO.sub.4, in an amount effective to provide a doped single domain crystal of MTiOAsO.sub.4 containing at least 10 ppm of said dopant.
摘要翻译： 公开了MTiOAsO4（其中M为K，Rb和/或Cs）的掺杂结晶组合物（例如，单结晶体晶体），其含有至少约10ppm的Fe，Sc和/或In掺杂剂。 还公开了一种助焊剂工艺，其特征在于将所述掺杂剂加入含有用于形成MTiOAsO 4的组分的熔体中，其量有效地提供含有至少10ppm所述掺杂剂的MTiOAsO 4的掺杂单结晶体晶体。
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公开(公告)号：US5334365A
公开(公告)日：1994-08-02
申请号：US888945
申请日：1992-05-26
申请人： Lap K. Cheng
发明人： Lap K. Cheng
摘要： A flux process is disclosed for producing a single orthorhombic crystal of Cs.sub.1-x M.sub.x TiOAsO.sub.4 (where M is Na, K, Rb, and/or Tl and x is from 0 to 0.4) wherein the dimension of the crystal along each axis is at least about 2 mm, and wherein the product at the dimensions along the three axes is at least about 15 mm.sup.3. The process involves preparing a homogeneous melt containing the components for forming said crystal and a flux comprising oxides of Cs and As at a temperature no higher than the decomposition temperature of said orthorhombic crystal, the mole fraction of M relative to the total Cs+M in the melt being within the range of from 0 to about 0.2; introducing a seed crystal for said single crystal in the melt; activating the controlled crystallization on the seed crystal; and continuing the crystallization until formation of the single crystal is completed. Single crystals of Cs.sub.1-x M.sub.x TiOAsO.sub.4 (including crystals at least about 5 mm.times.5 mm 5 mm) are also disclosed.
摘要翻译： 公开了用于制造Cs1-xMxTiOAsO4（其中M是Na，K，Rb和/或T1和x为0至0.4）的单斜晶体的焊剂工艺，其中沿着每个轴的晶体的尺寸至少约为 2mm，并且其中沿着三个轴线的尺寸的产品为至少约15mm 3。 该方法包括制备含有用于形成所述晶体的组分的均匀熔体和包含Cs和As的氧化物的焊剂，其温度不高于所述正交晶体的分解温度，M相对于总Cs + M的摩尔分数 熔体在0至约0.2的范围内; 在熔体中引入所述单晶的晶种; 激活晶种上的受控结晶; 并继续结晶，直到完成单晶的形成。 还公开了Cs1-xMxTiOAsO4的单晶（包括至少约5mm×5mm×5mm的晶体）。
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公开(公告)号：US5033057A
公开(公告)日：1991-07-16
申请号：US455179
申请日：1989-12-22
申请人： Walter R. Bosenberg , Lap K. Cheng , Chung L. Tang
发明人： Walter R. Bosenberg , Lap K. Cheng , Chung L. Tang
IPC分类号： G02F1/39
CPC分类号： G02F1/39
摘要： An optical parametric oscillator capable of operating in the 0.300 to 0.400 micrometer wavelength range is disclosed. The oscillator includes a cavity defined at its ends by a pair of cavity resonator mirrors. A nonlinear optical crystal is positioned on the optical axis of the cavity intermediate the mirrors and is rotatable about a crystalline axis to tune the oscillator. A pair of pump steering mirrors are mounted in the cavity, one mirror between each resonator mirror and the corresponding end of the crystal. A source of pumping energy supplies energetic light to the cavity, the pumping beam being directed into the cavity and onto a first steering mirror, thence through the crystal and to the second steering mirror which then directs the pumping beam out of the cavity. The pumping beam may be at a wavelength of 266 nm, for example, to produce an output wave from the oscillator within the range of interest.
摘要翻译： 公开了能够在0.300至0.400微米波长范围内工作的光学参量振荡器。 振荡器包括在其端部由一对空腔谐振器反射镜限定的空腔。 非线性光学晶体位于反射镜之间的空腔的光轴上并且可以围绕晶体轴线旋转以调谐振荡器。 一对泵转向镜安装在空腔中，每个谐振镜与晶体的相应端之间有一个反射镜。 泵送能量源向空腔提供能量光，泵浦光束被引导到空腔中并进入第一转向镜，然后通过晶体和第二转向镜，然后将泵送光束引导出空腔。 例如，泵浦光束可以在266nm的波长处，以在感兴趣的范围内产生来自振荡器的输出波。
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公开(公告)号：US4488375A
公开(公告)日：1984-12-18
申请号：US423044
申请日：1982-09-24
申请人： Lap K. Cheng
发明人： Lap K. Cheng
CPC分类号： A63H17/262 , A63H17/40
摘要： A toy motor car comprises a body having a bottom cover secured thereto by means of screws and a frame on which the body is pivotally mounted. Back wheels of the car are rotatably mounted to the frame and are adapted to be driven in rotation by a battery powered motor housed in a gear box mounted on the frame. The motor also effects rotation of a pinion and an eccentric cam. A clutch is provided in the gear box for changing the direction of rotation of the back wheels at predetermined intervals and, when the car is travelling in a first direction, the cam engages a cam follower which is pivotal with respect to the frame to effect rocking of the body relative to the frame. When the direction of rotation of the back wheels changes, the cam is disengaged from the cam follower and the pinion engages a rack of a lever thereby turning front wheels of the car.
摘要翻译： 一种玩具电动车包括具有通过螺钉固定到其上的底盖的本体和其上枢转地安装有主体的框架。 轿厢的后轮可旋转地安装在框架上，并且适于由容纳在安装在框架上的齿轮箱中的电池供电马达驱动旋转。 电机还会影响小齿轮和偏心凸轮的旋转。 在齿轮箱中设置有用于以预定间隔改变后轮的旋转方向的离合器，并且当轿厢沿第一方向行进时，凸轮接合相对于框架枢转的凸轮从动件以实现摇摆 的身体相对于框架。 当后轮的旋转方向改变时，凸轮与凸轮从动件脱离接合，小齿轮与杆的齿条接合，从而转动汽车的前轮。
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9.发明授权
公开(公告)号：US5500145A
公开(公告)日：1996-03-19
申请号：US199913
申请日：1993-07-30
申请人： Lap K. Cheng
发明人： Lap K. Cheng
摘要： A hydrothermal process is disclosed for growing a crystal at MTiOXO.sub.4 wherein M is NH.sub.4, K, Rb and/or Tl or mixtures thereof with Cs and X is P and/or As, at elevated temperatures using a mineralizer comprising both M.sup.+1 and X.sup.+5 and an amount of F.sup.-0 effective to increase the solubility of MTiOXO.sub.4 in the mineralizer. Mineralizers containing F.sup.-1, M.sup.+1 and X.sup.+5 are disclosed wherein F.sup.-1 is present in an amount effective to increase the solubility of MTiOXO.sub.4 in the mineralizer and to provide a MTiOXO.sub.4 solubility of at least about 1% by weight at the operating temperature and pressure for the hydrothermal production.
摘要翻译： 公开了一种用于在MTiOXO4处生长晶体的水热法，其中M是NH 4，K，R b和/或T 1，或其与Cs和X的混合物是P和/或As，在高温下使用包含M + 1和X两者的矿化剂 +5和有效提高MTiOXO4在矿化剂中的溶解度的F-0量。 公开了含有F-1，M + 1和X + 5的矿物，其中F-1以有效提高MTiOXO4在矿化器中的溶解度的量存在，并提供至少约1重量％的MTiOXO 4溶解度 水热生产的工作温度和压力。
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公开(公告)号：US5371752A
公开(公告)日：1994-12-06
申请号：US130432
申请日：1993-10-01
申请人： Peter E. Powers , Lap K. Cheng , Wayne S. Pelouch , Chung L. Tang
发明人： Peter E. Powers , Lap K. Cheng , Wayne S. Pelouch , Chung L. Tang
CPC分类号： G02F1/39
摘要： A continuous wave tunable femtosecond optical parametric oscillator includes an oscillator cavity including a pumping cavity. A nonlinear KTiOAsO.sub.4 crystal (KTA) is located in the pumping cavity and is pumped by a Ti:sapphire laser to produce output pulses having widths as short as 85 femtoseconds at wavelengths in the range 1.0 .mu.m to 5.0 .mu.m.
摘要翻译： 连续波可调飞秒光参量振荡器包括包括泵腔的振荡器腔。 非线性KTiOAsO4晶体（KTA）位于泵浦腔中，并通过Ti：蓝宝石激光器泵浦，产生的输出脉冲宽度为85飞秒，波长范围为1.0μm至5.0μm。
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