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    • 2. 发明授权
    • Semiconductor photodetector device
    • 半导体光电探测器
    • US07211829B2
    • 2007-05-01
    • US11059500
    • 2005-02-17
    • Hisatada YasukawaRyouichi ItoTakaki IwaiMasaki TaniguchiYasushi Jin
    • Hisatada YasukawaRyouichi ItoTakaki IwaiMasaki TaniguchiYasushi Jin
    • H01L27/15H01L31/113
    • H01L27/1443H01L31/0288H01L31/103Y02E10/50
    • A semiconductor photodetector device includes: a first semiconductor layer of a first conductivity type; and a second semiconductor layer of a second conductivity type formed on the first semiconductor layer and having a light-receiving region. The first semiconductor layer includes a first region containing an impurity of the first conductivity type at a high concentration and a second region formed on the first region and containing an impurity of the first conductivity type at a concentration lower than that of the first region. The second semiconductor layer includes a third region containing an impurity of the second conductivity type at a concentration higher than that of the second region and a fourth region formed on the third region and containing an impurity of the second conductivity type at a concentration higher than that of the third region.
    • 一种半导体光检测器件包括:第一导电类型的第一半导体层; 以及形成在第一半导体层上并具有光接收区域的第二导电类型的第二半导体层。 第一半导体层包括含有高浓度的第一导电类型的杂质的第一区域和形成在第一区域上并且含有浓度低于第一区域的浓度的第一导电类型杂质的第二区域。 第二半导体层包括含有浓度高于第二区域的第二导电类型的杂质的第三区域和形成在第三区域上的第四区域,并且含有浓度高于第二区域的浓度的第二导电类型的杂质。 的第三个地区。
    • 8. 发明授权
    • Bandpass photon detector for inverse photoemission spectroscopy
    • 用于逆光子发射光谱的带通光子检测器
    • US5340976A
    • 1994-08-23
    • US33327
    • 1993-03-18
    • Masaki TaniguchiToshiaki Ohta
    • Masaki TaniguchiToshiaki Ohta
    • G01N23/227G01J1/42G01N21/62G01T1/28H01J43/08G01N23/22
    • G01T1/28G01J1/429
    • A bandpass photon detector for inverse photoemission spectroscopy comprises a sample chamber and an analyzer chamber connected to a vacuum exhaust system, respectively; a photon detector connected to the analyzer chamber; the sample chamber and the analyzer chamber are switchably connected through a gate valve and provided with a sample transfer system for transferring a sample held at a center axial line of the sample chamber to a center portion of the analyzer chamber, the analyzer chamber is provided with an electron gun opposed to a sample positioned at a center where the sample is transferred and a photomultiplier comprising a low cut filter consisting of Cu-BeO at the opposite side of the electron gun, wherein a potassium chloride is deposited in a thickness of 500-1000 .ANG. on a first diode of said photomultiplier, thereby high inverse photoemission spectroscopy can be measured so as to analysis and estimation of semiconductors and magnetic material.
    • 用于逆光电子发射光谱的带通光子检测器分别包括连接到真空排气系统的样品室和分析器室; 连接到分析器室的光子检测器; 样品室和分析器室通过闸阀可切换地连接并设置有用于将保持在样品室的中心轴线处的样品转移到分析器室的中心部分的样品转移系统,分析器室设置有 与位于样品转移中心的样品相对的电子枪和包含由电子枪相反侧的Cu-BeO构成的低切滤光片的光电倍增管,其中以500nm的厚度沉积氯化钾, 可以测量所述光电倍增管的第一个二极管上的1000个ANGSTROM,从而可以测量高反射光电子能谱,以便分析和估计半导体和磁性材料。
    • 9. 发明授权
    • Amplifier circuit for optical disk drive
    • 用于光盘驱动器的放大器电路
    • US07476839B2
    • 2009-01-13
    • US10983737
    • 2004-11-09
    • Hiroshi YamaguchiMasaki Taniguchi
    • Hiroshi YamaguchiMasaki Taniguchi
    • H03F3/06H03F3/45H03G3/00G11B11/00
    • H03F3/08H03F3/45085H03F2203/45466H03G3/3084
    • An operational amplifier including a pair of differential input transistors is provided with a feedback resistor switching circuit and a variable current source. When a loaded optical disk is a DVD-ROM, the feedback resistor switching circuit reduces a gain of the operational amplifier and the variable current source selects a large current (of, for example, 1 mA) as a common bias current supplied to the differential input transistors. When the loaded optical disk is a DVD-RAM with low reflectance and low recording/reproducing speed, the feedback resistor switching circuit enhances the gain of the operational amplifier and the variable current source selects a small current (of, for example, 0.5 mA) as the common bias current.
    • 包括一对差分输入晶体管的运算放大器设置有反馈电阻器切换电路和可变电流源。 当加载的光盘是DVD-ROM时,反馈电阻器开关电路降低运算放大器的增益,并且可变电流源选择大电流(例如,1mA)作为提供给差分器的公共偏置电流 输入晶体管。 当装载的光盘是具有低反射率和低记录/再现速度的DVD-RAM时,反馈电阻器切换电路增强了运算放大器的增益,并且可变电流源选择小电流(例如,0.5mA) 作为常见的偏置电流。