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1. 发明授权

US06940638B2 Optical frequency conversion systems and methods 失效
标题翻译：光变频系统及方法
公开(公告)号：US06940638B2
公开(公告)日：2005-09-06
申请号：US10414168
申请日：2003-04-15
申请人： You Kondoh , Norihide Yamada , Kenichi Abiko
发明人： You Kondoh , Norihide Yamada , Kenichi Abiko
IPC分类号： G02F1/01 , G02F2/02
CPC分类号： G02F2/02
摘要： Optical frequency conversion systems and methods are described. In one aspect, an optical frequency conversion system for generating a frequency-shifted replica of an input optical signal includes a phase modulation control signal generator and an optical phase modulator. The phase modulation control signal generator receives the input optical signal and generates a phase modulation control signal characterized by a sequence of phase shift control portions synchronized to the input optical signal. The optical phase modulator receives the input optical signal and phase shifts the input optical signal in accordance with the phase shift control portions of the phase modulation control signal to generate a frequency-converted replica of the input optical signal. An optical frequency conversion method for generating a frequency-shifted replica of an input optical signal also is described.
摘要翻译：描述了光学变频系统和方法。一方面，用于产生输入光信号的频移副本的光频变换系统包括相位调制控制信号发生器和光相位调制器。相位调制控制信号发生器接收输入光信号并产生相位调制控制信号，其特征在于与输入光信号同步的一系列相移控制部分。光相位调制器接收输入光信号，并根据相位调制控制信号的相移控制部分对输入光信号进行相移，以产生输入光信号的频率转换副本。还描述了用于产生输入光信号的频移副本的光频变换方法。

2. 发明授权

US06909508B2 Measuring optical waveforms 失效
标题翻译：测量光学波形
公开(公告)号：US06909508B2
公开(公告)日：2005-06-21
申请号：US10393850
申请日：2003-03-21
申请人： Norihide Yamada
发明人： Norihide Yamada
IPC分类号： G01J9/00 , G01J11/00 , H04B10/07 , H04B10/516 , H04B10/61 , G01B9/02 , H04B10/06
CPC分类号： H04B10/07 , G01J9/00 , G01J11/00
摘要： Apparatus and methods of measuring optical waveforms are described. In one aspect, an optical waveform measurement apparatus includes a light wave source, a mixer, a down converter, and a controller. The light wave source is operable to provide an adjustable frequency light wave with a frequency that is adjustable over a target frequency range. The mixer is operable to mix a target modulated optical signal with the adjustable frequency light wave to obtain a mixed signal. The frequency down converter is operable to down convert the mixed signal to obtain a down-converted signal. The controller is operable to extract from the down-converted signal amplitude and phase information relating to the target modulated optical signal and to cause the light wave source to incrementally adjust the frequency of the adjustable frequency light wave over the target frequency range.
摘要翻译：描述了测量光学波形的装置和方法。一方面，光波形测量装置包括光波源，混频器，下变频器和控制器。光波源可操作以提供可在目标频率范围内调节的频率的可调频光波。混合器可操作以将目标调制光信号与可调频光波混合以获得混合信号。降频转换器可操作以将混合信号下变频以获得下变频信号。控制器可操作地从降频转换信号中提取与目标调制光信号相关的振幅和相位信息，并使光波源逐渐调节在目标频率范围上的可调频光波的频率。

3. 发明授权

US06836574B2 Optical domain optical signal sampling device 失效
公开(公告)号：US06836574B2
公开(公告)日：2004-12-28
申请号：US10360958
申请日：2003-02-07
申请人： Ryu Shioda , Norihide Yamada
发明人： Ryu Shioda , Norihide Yamada
IPC分类号： G02F1035
CPC分类号： H04B10/5051 , H04B10/505
摘要： The optical domain optical signal sampling device comprises an electrical sampling pulse source and an electrically-controlled optical modulator. The electrically-controlled optical modulator comprises electro-optical material, an optical waveguide located in the electro-optical material and including a bifurcated region, and electrodes disposed along the bifurcated region. The optical waveguide is arranged to receive an optical signal-under-test. At least one of the electrodes is connected to receive electrical sampling pulses from the electrical sampling pulse source. The electrical sampling pulses generate an electric field between the electrodes that differentially changes the refractive index of the electro-optical material in the bifurcated region of the optical waveguide to sample the optical signal-under-test.

4. 发明授权

US06822487B2 Method and apparatus for synthesizing and utilizing waveforms 失效
标题翻译：用于合成和利用波形的方法和装置
公开(公告)号：US06822487B2
公开(公告)日：2004-11-23
申请号：US10617969
申请日：2003-07-10
申请人： Go Tejima , Norihide Yamada
发明人： Go Tejima , Norihide Yamada
IPC分类号： H03B2100
CPC分类号： G06G7/26
摘要： A method is provided for synthesizing an arbitrary waveform that approximates a specific waveform. The method includes specifying respective frequencies of component waveforms to be used to generate the arbitrary waveform, the frequencies being less than the maximum frequency needed to synthesize the specific waveform. The method further includes performing a least squares optimization of respective amplitudes and phases of the component waveforms across at least one predetermined time interval. The component waveforms having the amplitudes and phases optimized by the least squares optimization are then summed to produce the arbitrary waveform.
摘要翻译：提供一种用于合成近似特定波形的任意波形的方法。该方法包括指定要用于生成任意波形的分量波形的相应频率，该频率小于合成特定波形所需的最大频率。该方法还包括在至少一个预定的时间间隔内对分量波形的相应幅度和相位执行最小二乘优化。然后将具有通过最小二乘优化优化的幅度和相位的分量波形相加以产生任意波形。

5. 发明授权

US06614214B2 Sampling element controlled by photoconductive switch-generated sampling pulses and sampling device incorporating same 失效
公开(公告)号：US06614214B2
公开(公告)日：2003-09-02
申请号：US09919629
申请日：2001-07-30
申请人： Akira Mizuhara , Tsutomu Takenaka , Yasuhisa Kaneko , Norihide Yamada
发明人： Akira Mizuhara , Tsutomu Takenaka , Yasuhisa Kaneko , Norihide Yamada
IPC分类号： G01R1314
CPC分类号： G01R13/347
摘要： The sampling element comprises a DC sampling voltage source, a threshold sampling circuit and a photoconductive switching element. The threshold sampling circuit includes a signal-under-test input, a sampling pulse input and an IF signal output, and has a sampling threshold with respect to sampling pulses received at the sampling pulse input. The photoconductive switching element is connected between the DC sampling voltage source and the sampling pulse input of the threshold sampling circuit. The sampling device comprises a DC sampling voltage source, a threshold sampling circuit, a photoconductive switching element and a light source. The threshold sampling circuit includes a signal-under-test input, a sampling pulse input and an IF signal output, and has a sampling threshold with respect to sampling pulses received at the sampling pulse input. The photoconductive switching element is connected between the DC sampling voltage source and the sampling pulse input of the threshold sampling circuit. The light source is operable to generate optical pulses and is arranged to illuminate the photoconductive switching element with the optical pulses.

6. 发明授权

US5814239A Gas-phase etching and regrowth method for Group III-nitride crystals 失效
标题翻译： III族氮化物晶体的气相蚀刻和再生长方法
公开(公告)号：US5814239A
公开(公告)日：1998-09-29
申请号：US684608
申请日：1996-07-19
申请人： Yawara Kaneko , Norihide Yamada
发明人： Yawara Kaneko , Norihide Yamada
IPC分类号： C23F4/00 , H01L21/205 , H01L21/302 , H01L21/306 , H01L21/3065 , H01S5/00 , H01S5/323 , B44C1/22
CPC分类号： H01L21/30621
摘要： A gas-phase etchant is provided. The gas-phase etchant includes at least one halogen in gaseous form and/or at least one halogen halide in gaseous form. A Group III-nitride crystal is heated to a temperature in the range of 500.degree.-900.degree. C. and is etched in a flow of the gas-phase etchant. The gas-phase etchant may additionally include hydrogen. The gas-phase etchant may alternatively be diluted with inert gas, and the Group III-nitride crystal may be etched in a flow of the gas-phase etchant diluted with the inert gas.
摘要翻译：提供气相蚀刻剂。气相蚀刻剂包括至少一种气态卤素和/或至少一种气态卤化物。将III族氮化物晶体加热到500-900℃的温度，并在气相腐蚀剂的流动下进行蚀刻。气相蚀刻剂可另外包括氢。气相蚀刻剂可以替代地用惰性气体稀释，并且可以在用惰性气体稀释的气相蚀刻剂的流中蚀刻III族氮化物晶体。

7. 发明授权

US5616177A Group II-VI semiconductor laser and method for the manufacture thereof 失效
标题翻译： II-VI族半导体激光器及其制造方法
公开(公告)号：US5616177A
公开(公告)日：1997-04-01
申请号：US394664
申请日：1995-02-22
申请人： Norihide Yamada
发明人： Norihide Yamada
IPC分类号： H01S5/00 , H01S5/327 , H01S5/347 , C30B25/14
CPC分类号： H01L33/40 , B82Y20/00 , H01L33/0087 , H01S5/327 , H01S5/347
摘要： In a Group II-VI semiconductor laser based on MgZnSSe, CdZnSSe, and MgCdZnSSe, adsorption layers containing crystal structure elements and doping impurities are successively grown as crystals on an n-type substrate, wherein the layers from the initial adsorption layer to the next-to-last p-type adsorption layer are formed using solid-source MBE, and the last p-type adsorption layer is formed using gas-source MBE or MOVPE; and wherein the last p-type adsorption layer is preferably grown under Group II rich conditions.
摘要翻译：在基于MgZnSSe，CdZnSSe和MgCdZnSSe的II-VI族半导体激光器中，含有晶体结构元素和掺杂杂质的吸附层在n型衬底上依次生长为晶体，其中从初始吸附层到下一层的层，使用固体源MBE形成最终的p型吸附层，并且使用气体源MBE或MOVPE形成最后的p型吸附层; 并且其中最后的p型吸附层优选在II族富集条件下生长。

8. 发明授权

US5341390A Surface emitting second harmonic generating device 失效
标题翻译：表面发射二次谐波发生装置
公开(公告)号：US5341390A
公开(公告)日：1994-08-23
申请号：US47969
申请日：1993-04-15
申请人： Norihide Yamada , Yoshikatsu Ichimura
发明人： Norihide Yamada , Yoshikatsu Ichimura
IPC分类号： G02F1/37 , H01S3/109 , H01S5/00 , H01S5/06 , H01S5/183 , H01S5/32 , H01S5/323 , H01S3/19
CPC分类号： H01S5/18305 , H01S3/109 , H01S5/0207 , H01S5/0604 , H01S5/0605 , H01S5/18308 , H01S5/18341 , H01S5/18369 , H01S5/3202
摘要： A surface emitting second harmonic generating device capable of generating a second harmonic at room temperatures with high efficiency and output power, and which has a small size, low energy consumption and a low manufacturing cost. A second harmonic is efficiently generated when the direction of the semiconductor crystals within a cavity makes an angle of 5.degree. or more with respect to the direction of the light rays (particularly when one of the , and directions approximately matches the direction of the light rays). Further, if a superlattice second harmonic generating layer composed of a III-V or II-VI compound semiconductor is provided between the output end reflector and the spacer layer, the second harmonic may be generated with even greater efficiency. In addition, the spacer layer may be formed by a superlattice, as may the active layer and the spacer layers. A second harmonic may also be efficiently generated by utilizing the spacer layer and the active layer as phase-matching layers.
摘要翻译：一种表面发射二次谐波发生装置，其能够在室温下以高效率和输出功率产生二次谐波，并且具有小尺寸，低能耗和低制造成本。当空腔内的半导体晶体的<100>方向相对于光线的方向成为5°或更大的角度时，特别是当<111>，<211>和 <110>方向近似地匹配光线的方向）。此外，如果在输出端反射器和间隔层之间设置由III-V或II-VI化合物半导体构成的超晶格二次谐波发生层，则可以以更高的效率产生二次谐波。此外，间隔层可以由超晶格形成，如有源层和间隔层也可以形成。也可以通过利用间隔层和有源层作为相位匹配层来有效地产生二次谐波。

9. 发明授权

US07151384B2 Probe device and display substrate testing apparatus using same 失效
标题翻译：探头装置和显示基板测试装置使用相同
公开(公告)号：US07151384B2
公开(公告)日：2006-12-19
申请号：US10540646
申请日：2004-01-23
申请人： Toshiaki Ueno , Norihide Yamada
发明人： Toshiaki Ueno , Norihide Yamada
IPC分类号： G01R27/08 , G01R31/00
CPC分类号： G09G3/006 , G01R1/07307
摘要： A plasma having a certain density is generated between a test electrode and an electrode on a display substrate comprising a TFT array which is a circuit under test, and a test signal is transmitted between the electrode and the test electrode via the plasma. With this technique, a probe means and a testing apparatus enabling measurement of the electrical characteristics of the TFT array formed on the display substrate in a non-contact manner can be provided.
摘要翻译：在包括作为被测电路的TFT阵列的显示基板上的测试电极和电极之间产生具有一定密度的等离子体，并且通过等离子体在电极和测试电极之间传输测试信号。通过这种技术，可以提供能够以非接触方式测量形成在显示基板上的TFT阵列的电特性的探针装置和测试装置。

10. 发明授权

US06815662B2 Apparatus and method for measuring optical signals by optical sampling 失效
标题翻译：通过光学采样测量光信号的装置和方法
公开(公告)号：US06815662B2
公开(公告)日：2004-11-09
申请号：US10144208
申请日：2002-05-10
申请人： Norihide Yamada , Katsuya Yamashita , Satoshi Watanabe
发明人： Norihide Yamada , Katsuya Yamashita , Satoshi Watanabe
IPC分类号： G01N2125
CPC分类号： G01J11/00
摘要： A measurement apparatus for an optical signal under test includes a closed-loop optical path, an optical mixer in the closed-loop optical path and a photodetector. The optical signal under test and sampling light having a wavelength different from that of the optical signal under test are circulated in the closed-loop optical path. Sum/difference frequency light is generated every time the sampling light passes through the optical mixer. The sum/difference frequency light is detected by the photodetector, which provides a signal representative of the waveform of the optical signal under test.
摘要翻译：用于被测光信号的测量装置包括闭环光路，闭环光路中的光混合器和光电检测器。具有与被测光信号不同的波长的被测光信号和采样光在闭环光路中循环。每次采样光通过光学混合器时产生和/差频光。和/差频光由光电检测器检测，其提供表示被测光信号的波形的信号。

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