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    MASER ASSEMBLY
    51.
    发明申请
    MASER ASSEMBLY 有权
    大师组装

    公开(公告)号：US20150214687A1

    公开(公告)日：2015-07-30

    申请号：US14421954

    申请日：2013-08-15

    申请人： The Secretary of State for Business Innovation & Skills of Her Majest's Britannic Government

    发明人： Mark Oxborrow

    IPC分类号： H01S1/02

    CPC分类号： H01S1/02

    摘要： A maser assembly includes a pump light source; a maser material including molecules that are excited through the absorption of light (1) from the pump light source, and which subsequently transfer via intersystem crossing (9) into the sublevels of their triplet ground states, so causing a population inversion between two sublevels (16,18); an electromagnetic structure in which the masing material is disposed, and which supports a microwave mode that is both resonant in frequency with and magnetically coupled to the transition between these two sublevels; and where energy is supplied to the microwave mode through stimulated emission (25) across the transition at such a rate as to exceed the mode's electromagnetic losses, the microwave mode being a maser mode. The assembly includes provisions for effecting substantially continuous maser activity during operation of the assembly. The laser crystal may be a (perdeuterated) pentacene in p-terphenyl which is held at room temperature without an additional magnetic field and the dye molecules in the single crystal may be pumped by blue LED with a frequency conversion to the yellow and green with the help of a Ce:YAG fluorescent pump light concentrator.

    摘要翻译： 激光组件包括泵浦光源; 包括通过从泵浦光源吸收光（1）而被激发并且随后通过系统间交叉（9）传递到它们的三线态基态的子级中的分子的激光材料，从而导致两个子电平之间的群体反转（ 16,18）; 其中安装有masing材料的电磁结构，并支持与这两个子电平之间的过渡频率和磁耦合的微波模式; 并且其中通过跨越过渡部的受激发射（25）以超过模式的电磁损耗的速率将能量提供给微波模式，微波模式是主动模式。 组件包括在组装操作期间实现基本上连续的激光活动的规定。 激光晶体可以是对三联苯中的（全氘代）并五苯，其保持在室温而没有额外的磁场，并且单晶中的染料分子可以被蓝色LED泵送，其频率转换为黄色和绿色， 帮助Ce：YAG荧光泵集中器。

    Dendrimer based terahertz generator
    52.
    发明授权
    Dendrimer based terahertz generator 有权
    基于Dendrimer的太赫兹发生器

    公开(公告)号：US09093810B2

    公开(公告)日：2015-07-28

    申请号：US13281230

    申请日：2011-10-25

    申请人： Anis Rahman ,  Aunik K. Rahman

    发明人： Anis Rahman ,  Aunik K. Rahman

    IPC分类号： G02B6/00 ,  H01S1/02 ,  B82Y20/00 ,  G02F1/35 ,  G02F1/355 ,  G02F1/361 ,  G02F1/365

    CPC分类号： H01S1/02 ,  B82Y20/00 ,  G02F1/353 ,  G02F1/3558 ,  G02F1/361 ,  G02F1/3611 ,  G02F1/3612 ,  G02F1/365 ,  G02F2203/13

    摘要： A high efficiency electro-optic dendrimer based technology for nanophotonic integrated circuit devices is presented. In particular, a high power terahertz (THz) source is implemented using an electro-optic dendrimer via electro-optic rectification. Electro-optic rectification provides inherent power scalability, because, pump-THz conversion is not limited either by emission saturation or by heat dissipation. Low dielectric loss and high electro-optic coefficient of dendrimer along with a waveguide structure provides higher output power and tunable THz power generation. A dendrimer fiber array is also disclosed by means of which the input/output signals are connected to multiple components and devices.

    摘要翻译： 提出了一种用于纳米光子集成电路器件的高效电光树枝状大分子技术。 特别地，通过电光校正，使用电光树枝状大分子实现高功率太赫兹（THz）源。 电光整流提供固有的功率可扩展性，因为泵 - THz转换不受发射饱和或散热的限制。 低介电损耗和树状聚合物的高电光系数以及波导结构提供更高的输出功率和可调谐的太赫兹发电。 还公开了一种树状聚合物纤维阵列，通过该树枝状聚合物纤维阵列将输入/输出信号连接到多个部件和装置。

    Efficient third-order distributed feedback laser with enhanced beam pattern
    53.
    发明授权
    Efficient third-order distributed feedback laser with enhanced beam pattern 有权
    高效的三阶分布式反馈激光器具有增强的光束图案

    公开(公告)号：US09036674B2

    公开(公告)日：2015-05-19

    申请号：US14372135

    申请日：2013-03-05

    申请人： Massachusetts Institute of Technology ,  LongWave Photonics LLC

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

    IPC分类号： H01S5/12 ,  H01S5/22 ,  H01S5/20 ,  H01S1/02 ,  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。

    All-optical generation of 60 GHz millimeter wave using multiple wavelength Brillouin-Erbium fiber laser
    55.
    发明授权
    All-optical generation of 60 GHz millimeter wave using multiple wavelength Brillouin-Erbium fiber laser 失效
    使用多波长布里渊铒光纤激光器的60 GHz毫米波全光学生成

    公开(公告)号：US08687659B2

    公开(公告)日：2014-04-01

    申请号：US13634581

    申请日：2010-11-15

    申请人： Asmahanim bte Ahmad ,  Mohamed Razman bin Yahya ,  Syamsuri bin Yaakob ,  Mohd Adzir Mahdi ,  Romli Mohamad ,  Abdullah bin Man ,  Muhammad Zamsuri bin Abdul Kadir ,  Yu Gang Shee

    发明人： Asmahanim bte Ahmad ,  Mohamed Razman bin Yahya ,  Syamsuri bin Yaakob ,  Mohd Adzir Mahdi ,  Romli Mohamad ,  Abdullah bin Man ,  Muhammad Zamsuri bin Abdul Kadir ,  Yu Gang Shee

    IPC分类号： H01S3/30

    CPC分类号： H01S3/302 ,  H01S1/02 ,  H01S3/06754 ,  H01S3/06791

    摘要： A system (100) for generating a millimeter wave signals from heterodyning wavelengths from a multi-wavelength signal generated by a Brillouin-Erbium fiber laser (101). The Brillouin-Erbium fiber laser (101) includes a source laser (105) that transmits a seed signal. An optical directional coupler (110) has a first input that receives the seed signal from the source laser and a first output. An Erbium doped fiber amplifier (115) has an input connected to the first output of the optical directional coupler and an output. The Erbium doped fiber amplifier amplifies the seed signal. A four port circulator (120) has a first port that receives the seed signal from the Erbium doped fiber amplifier. A Brillouin gain medium (135) is connected to a second port and a third port of the circulator. The seed signal propagates through the Brillouin gain medium in a first direction and a first order Stokes signal propagates through the Brillouin gain medium in a second direction to generate a second order Stokes signal propagating in the first direction. A fourth port of the circulator is connected to a second input of the optical directional coupler. The optical directional coupler receives the signal from the fourth port of the circulator and outputs a portion of the signal to a first output and a second portion to a second output of the optical directional coupler. Two wavelengths from the second output are then received by a photodiode (150) that heterodynes the signal to generate a millimeter wave signal.

    摘要翻译： 一种用于从由布里渊 - 铒光纤激光器（101）产生的多波长信号产生来自外差波长的毫米波信号的系统（100）。 布里渊铒光纤激光器（101）包括发射种子信号的源激光器（105）。 光学定向耦合器（110）具有从源激光器接收种子信号和第一输出的第一输入端。 掺铒光纤放大器（115）具有连接到光学定向耦合器的第一输出端的输入端和输出端。 掺铒光纤放大器放大种子信号。 四端口循环器（120）具有从掺铒光纤放大器接收种子信号的第一端口。 布里渊增益介质（135）连接到循环器的第二端口和第三端口。 种子信号沿第一方向传播通过布里渊增益介质，第一级斯托克斯信号在第二方向上传播通过布里渊增益介质，以产生沿第一方向传播的二阶斯托克斯信号。 循环器的第四端口连接到光学定向耦合器的第二输入端。 光学定向耦合器接收来自循环器的第四端口的信号，并将该信号的一部分输出到光学定向耦合器的第一输出端和第二部分到第二输出端。 然后由二极管（150）接收来自第二输出的两个波长，该光电二极管（150）对该信号进行外差以产生毫米波信号。

    Lens coupled quantum cascade laser
    56.
    发明授权
    Lens coupled quantum cascade laser 有权
    镜头耦合量子级联激光器

    公开(公告)号：US08619832B2

    公开(公告)日：2013-12-31

    申请号：US12437818

    申请日：2009-05-08

    申请人： Qing Hu ,  Alan Wei Min Lee

    发明人： Qing Hu ,  Alan Wei Min Lee

    IPC分类号： H01S5/00

    CPC分类号： H01S5/3402 ,  B82Y20/00 ,  H01S1/02 ,  H01S5/02288 ,  H01S5/14 ,  H01S5/141 ,  H01S5/3432 ,  H01S5/4087 ,  H01S2302/02

    摘要： Terahertz quantum cascade (QC) devices are disclosed that can operate, e.g., in a range of about 1 THz to about 10 THz. In some embodiments, QC lasers are disclosed in which an optical element (e.g., a lens) is coupled to an output facet of the laser's active region to enhance coupling of the lasing radiation from the active region to an external environment. In other embodiments, terahertz amplifier and tunable terahertz QC lasers are disclosed.

    摘要翻译： 公开了可以在例如约1THz至约10THz的范围内操作的太赫兹量子级联（QC）装置。 在一些实施例中，公开了一种QC激光器，其中光学元件（例如，透镜）耦合到激光器的有源区域的输出端面，以增强激活辐射从有源区域到外部环境的耦合。 在其他实施例中，公开了太赫兹放大器和可调谐太赫兹QC激光器。

    WAVEGUIDE, APPARATUS INCLUDING THE WAVEGUIDE, AND METHOD OF MANUFACTURING THE WAVEGUIDE
    59.
    发明申请
    WAVEGUIDE, APPARATUS INCLUDING THE WAVEGUIDE, AND METHOD OF MANUFACTURING THE WAVEGUIDE 有权
    波形管，包括波导的装置以及制造波导的方法

    公开(公告)号：US20120296589A1

    公开(公告)日：2012-11-22

    申请号：US13456718

    申请日：2012-04-26

    申请人： Yasushi Koyama

    发明人： Yasushi Koyama

    IPC分类号： G06F19/00 ,  G01R29/00 ,  H01P11/00 ,  H01P3/00

    CPC分类号： H01S1/02 ,  B82Y20/00 ,  H01S5/0215 ,  H01S5/0217 ,  H01S5/2018 ,  H01S5/3401 ,  H01S2302/02 ,  Y10T29/49016

    摘要： Provided are a waveguide capable of suppressing strain and defect caused in a semiconductor in an initial stage or during operation due to a manufacturing process or the like to realize improvement and stabilization of characteristics such as oscillation characteristics, and a method of manufacturing the waveguide. A waveguide includes a first conductor layer and a second conductor layer that are composed of a negative dielectric constant medium having a negative real part of dielectric constant with respect to an electromagnetic wave in a waveguide mode, and a core layer that is in contact with and placed between the first conductor layer and the second conductor layer, and includes a semiconductor portion. At least the first conductor layer has a particular depressed and projected structure extending in an in-plane direction.

    摘要翻译： 提供一种能够抑制在初始阶段或由于制造工艺等而在半导体中产生的应变和缺陷的波导，以实现诸如振荡特性的特性的改进和稳定化以及制造波导的方法。 波导包括第一导体层和第二导体层，第一导体层和第二导体层由负介电常数介质组成，负介电常数介质具有相对于波导模式的电磁波具有相对介电常数的负实部，以及芯层， 放置在第一导体层和第二导体层之间，并且包括半导体部分。 至少第一导体层具有在面内方向上延伸的特定凹陷和突出结构。

    Photoconductive antenna element
    60.
    发明授权
    Photoconductive antenna element 有权
    光导天线元件

    公开(公告)号：US08093560B2

    公开(公告)日：2012-01-10

    申请号：US12738163

    申请日：2008-10-24

    申请人： Kazuyoshi Kuroyanagi ,  Kazutoshi Nakajima

    发明人： Kazuyoshi Kuroyanagi ,  Kazutoshi Nakajima

    IPC分类号： G01J5/02

    CPC分类号： H01Q1/44 ,  H01L31/0224 ,  H01L31/0304 ,  H01L31/09 ,  H01Q1/38 ,  H01Q9/16 ,  H01Q9/28 ,  H01Q21/062 ,  H01S1/02 ,  Y02E10/544

    摘要： This invention relates to a photoconductive antenna element having a structure capable of preventing element characteristics from deteriorating and attain a smaller size at the same time. This photoconductive antenna element (17) comprises a pair of electrodes (21) formed on a semiconductor layer (19). Each electrode (21) is constituted by an antenna part (22), pad parts (23), and a line part (24) connecting them, while the line part (24) includes a parallel portion (24a) extending from the antenna part (22). In the line part (24) of one electrode (21), a portion other than the antenna region (A) is bent opposite to the other electrode (21). In the line part (24) of the other electrode (21), a portion other than the antenna region (A) is bent opposite to the one electrode (21). This structure can prevent the photoconductive antenna element (17) from deteriorating its element characteristics and make it smaller.

    摘要翻译： 本发明涉及具有能够同时防止元件特性恶化并达到较小尺寸的结构的光电导天线元件。 该光电导天线元件（17）包括形成在半导体层（19）上的一对电极（21）。 每个电极（21）由天线部分（22），焊盘部分（23）和连接它们的线部分（24）构成，而线部分（24）包括从天线部分延伸的平行部分 （22）。 在一个电极（21）的线路部分（24）中，与天线区域（A）以外的部分相对于另一个电极（21）弯曲。 在另一个电极（21）的线路部分（24）中，天线区域（A）之外的部分与一个电极（21）相对弯曲。 这种结构可以防止光导天线元件（17）劣化其元件特性并使其变小。