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    ULTRA-LOW NOISE CRYOGENIC MICROWAVE AMPLIFICATION
    3.
    发明公开
    ULTRA-LOW NOISE CRYOGENIC MICROWAVE AMPLIFICATION 审中-公开

    公开(公告)号：US20230327388A1

    公开(公告)日：2023-10-12

    申请号：US18208531

    申请日：2023-06-12

    申请人： Okinawa Institute of Science and Technology School Corporation

    发明人： Yuimaru KUBO ,  Jason Robert BALL ,  Petr MOROSHKIN ,  Denis KONSTANTINOV

    IPC分类号： H01S1/02

    CPC分类号： H01S1/02

    摘要： Embodiments of the microwave amplification system are described. In an embodiment, a microwave amplification system includes a microwave amplifier that contains a paramagnetic material with an impurity. The impurity has a plurality of nuclear spin and electron spin-based energy levels. The system includes an input to receive a pumping signal which is transmitted to the microwave amplifier to cause a population inversion in the impurity and excite it to one of the nuclear spin and electron spin-based energy levels. The system further includes another input to receive an input signal to be amplified by the microwave amplifier, the input signal having a lower power than the pumping signal. Once transmitted to the microwave amplifier, the input signal is amplified by the excited state of the impurity in the microwave amplifier thereby generating an amplified signal.

    Thermo-electric cooling system and method for cooling electronic devices
    4.
    发明授权
    Thermo-electric cooling system and method for cooling electronic devices 有权

    公开(公告)号：US09806491B2

    公开(公告)日：2017-10-31

    申请号：US14824964

    申请日：2015-08-12

    申请人： NOVATRANS GROUP SA

    发明人： John Connolly ,  John F. Roulston ,  Daniel Mandelik

    IPC分类号： H01S3/04 ,  H01S3/131 ,  F25B21/02 ,  H01L35/32 ,  G01N21/3586 ,  H01S1/02 ,  H01S5/024

    CPC分类号： H01S3/1317 ,  F25B21/02 ,  F25B2321/021 ,  G01N21/3586 ,  H01L35/325 ,  H01S1/02 ,  H01S3/0405 ,  H01S5/02415

    摘要： A thermo-electric cooling (TEC) system is presented for cooling of a device, such a laser for example. The TECT system comprises first and second heat pumping assemblies, and a control unit associated at least with said second heat pumping assembly. Each heat pumping assembly has a heat source from which heat is pumped and a heat drain through which pumped heat is dissipated. The at least first and second heat pumping assemblies are arranged in a cascade relationship having at least one thermal interface between the heat source of the second heat pumping assembly and the heat drain of the first heat pumping assembly, the heat source of the first heat pumping assembly being thermally coupled to the electronic device which is to be cooled by evacuating heat therefrom. The control unit is configured and operable to carry out at least one of the following: (i) operating said second heat pumping assembly to provide a desired temperature condition such that temperature of the heat drain of said first heat pumping assembly is either desirably low or by a certain value lower than temperature of the heat source of said first heat pumping assembly; and (ii) operating said second heat pumping assembly to maintain predetermined temperature of said thermal interface.

    Using tunnel junction and bias for effective current injection into terahertz magnon
    8.
    发明授权
    Using tunnel junction and bias for effective current injection into terahertz magnon 有权
    使用隧道结和偏置有效电流注入太赫兹磁子

    公开(公告)号：US09136665B1

    公开(公告)日：2015-09-15

    申请号：US14088448

    申请日：2013-11-25

    申请人： Boris G. Tankhilevich ,  Yehiel Korenblit

    发明人： Boris G. Tankhilevich ,  Yehiel Korenblit

    IPC分类号： H01S3/00 ,  H01S3/0959 ,  H01S3/04 ,  H01S1/02

    CPC分类号： H01S3/0959 ,  H01L43/00 ,  H01S1/02 ,  H01S3/0407

    摘要： An apparatus comprising a ferromagnetic conductive material including a magnon gain medium (MGM) and a tunnel junction coupled to the ferromagnetic conductive material are provided. The magnon gain medium (MGM) further comprises a conduction band that is split into two sub bands separated by an exchange energy gap, a first sub band having spin up, and a second sub band having spin down. The applied bias voltage is configured to shift the Fermi level of the external metallic contact with respect to the Fermi level of the ferromagnetic conductive material so that the injected electrons are configured to tunnel into the second sub band having spin down.

    摘要翻译： 提供一种包括铁磁性导电材料的装置，其包括磁铁增益介质（MGM）和耦合到铁磁性导电材料的隧道结。 磁通增益介质（MGM）还包括被分离成由交换能隙分开的两个子带的导带，具有旋转的第一子带和具有旋转的第二子带。 所施加的偏置电压被配置为相对于铁磁性导电材料的费米能级移动外部金属接触的费米能级，使得注入的电子被配置为隧道进入具有旋转的第二子带。

    Thermo-electric cooling system and method for cooling electronic devices
    9.
    发明授权
    Thermo-electric cooling system and method for cooling electronic devices 有权
    热电冷却系统及电子设备冷却方法

    公开(公告)号：US09134054B2

    公开(公告)日：2015-09-15

    申请号：US13520425

    申请日：2011-01-05

    申请人： John Connolly ,  John F. Roulston ,  Daniel Mandelik

    发明人： John Connolly ,  John F. Roulston ,  Daniel Mandelik

    IPC分类号： H01S3/04 ,  F25B21/02 ,  H01L35/32 ,  H01S5/024

    CPC分类号： H01S3/1317 ,  F25B21/02 ,  F25B2321/021 ,  G01N21/3586 ,  H01L35/325 ,  H01S1/02 ,  H01S3/0405 ,  H01S5/02415

    摘要： A thermo-electric cooling (TEC) system is presented for cooling of a device, such a laser for example. The TECT system comprises first and second heat pumping assemblies, and a control unit associated at least with said second heat pumping assembly. Each heat pumping assembly has a heat source from which heat is pumped and a heat drain through which pumped heat is dissipated. The at least first and second heat pumping assemblies are arranged in a cascade relationship having at least one thermal interface between the heat source of the second heat pumping assembly and the heat drain of the first heat pumping assembly, the heat source of the first heat pumping assembly being thermally coupled to the electronic device which is to be cooled by evacuating heat therefrom. The control unit is configured and operable to carry out at least one of the following: (i) operating said second heat pumping assembly to provide a desired temperature condition such that temperature of the heat drain of said first heat pumping assembly is either desirably low or by a certain value lower than temperature of the heat source of said first heat pumping assembly; and (ii) operating said second heat pumping assembly to maintain predetermined temperature of said thermal interface.

    摘要翻译： 提出了一种用于冷却器件（例如激光器）的热电冷却（TEC）系统。 TECT系统包括第一和第二热泵组件，以及至少与所述第二热泵组件相连的控制单元。 每个热泵组件都具有一个热源，热量从该热源被泵送，并且一个散热通过该热量消散。 至少第一和第二热泵组件布置成级联关系，其具有在第二热抽运组件的热源​​和第一热泵组件的热源​​之间的至少一个热界面，第一热泵的热源 组件热耦合到待通过从其中排出热量而被冷却的电子设备。 控制单元被配置和操作以执行以下至少一个：（i）操作所述第二热泵组件以提供期望的温度条件，使得所述第一热泵组件的排水温度理想地为低或 低于所述第一热泵组件的热源​​的温度的一定值; 和（ii）操作所述第二热泵组件以维持所述热界面的预定温度。

    Efficient Third-Order Distributed Feedback Laser with Enhanced Beam Pattern
    10.
    发明申请
    Efficient Third-Order Distributed Feedback Laser with Enhanced Beam Pattern 有权
    具有增强光束模式的高效三阶分布式反馈激光器

    公开(公告)号：US20150003481A1

    公开(公告)日：2015-01-01

    申请号：US14372135

    申请日：2013-03-05

    申请人： Mssachusetts Institute of Technology ,  LongWave Photonics LLC

    发明人： Qing Hu ,  Alan Wei Min Lee ,  Tsung-Yu Kao

    IPC分类号： H01S5/22 ,  H01S3/067

    CPC分类号： H01S5/22 ,  H01S1/02 ,  H01S3/0675 ,  H01S5/12 ,  H01S5/1231 ,  H01S5/2045 ,  H01S5/2086

    摘要： A third-order distributed feedback laser has an active medium disposed on a substrate as a linear array of segments having a series of periodically spaced interstices therebetween and a first conductive layer disposed on a surface of the active medium on each of the segments and along a strip from each of the segments to a conductive electrical contact pad for application of current along a path including the active medium. Upon application of a current through the active medium, the active medium functions as an optical waveguide, and there is established an alternating electric field, at a THz frequency, both in the active medium and emerging from the interstices. Spacing of adjacent segments is approximately half of a wavelength of the THz frequency in free space or an odd integral multiple thereof, so that the linear array has a coherence length greater than the length of the linear array.

    摘要翻译： 三阶分布反馈激光器具有设置在基板上的活性介质作为线段阵列，其具有在其间具有一系列周期性间隔的间隙的第一导电层，以及设置在每个段上的活性介质的表面上的第一导电层， 从每个段到条形导电电接触焊盘，用于沿着包括活性介质的路径施加电流。 在通过有源介质施加电流时，活性介质用作光波导，并且在活性介质中并且从空隙中出现时，建立了THz频率的交变电场。 相邻段的间隔大约是自由空间中的THz频率的波长的一半或其奇数整数倍，使得线性阵列的相干长度大于线性阵列的长度。