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公开(公告)号:US20100329289A1
公开(公告)日:2010-12-30
申请号:US12865486
申请日:2009-02-02
申请人: David Maurice Taylor , David Mark Benton , Charlotte Rachel Helen Bennett , Laurent Michaille , Terence John Shepherd
发明人: David Maurice Taylor , David Mark Benton , Charlotte Rachel Helen Bennett , Laurent Michaille , Terence John Shepherd
IPC分类号: H01S3/067
CPC分类号: H01S3/1055 , G02B6/02042 , G02B6/02347 , G02B6/02366 , H01S1/02 , H01S3/06737 , H01S3/0675 , H01S3/0809 , H01S3/115 , H01S3/2383
摘要: Apparatus comprising an optical fibre laser having at least two laser cores and means arranged to combine laser output from the at least two laser cores at a first end of the optical fibre laser to produce a combined laser output having one or more beat signals.
摘要翻译: 包括具有至少两个激光芯的光纤激光器的装置和被布置成在光纤激光器的第一端处组合来自至少两个激光芯的激光输出的装置,以产生具有一个或多个拍频信号的组合激光输出。
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公开(公告)号:US20100232457A1
公开(公告)日:2010-09-16
申请号:US12302524
申请日:2008-08-27
申请人: Ryota Sekiguchi
发明人: Ryota Sekiguchi
CPC分类号: H01S1/02 , B82Y20/00 , H01S5/1046 , H01S5/20 , H01S5/3402
摘要: Provided is a long wavelength laser of which the operating point is stabilized and the laser oscillation is stabilized. The long wavelength laser comprises a resistor element provided to a portion where the surface current is maximum in a surface plasmon waveguide to stabilize a potential difference between a first cladding and a second cladding in the surface plasmon waveguide.
摘要翻译: 提供了工作点稳定并且激光振荡稳定的长波长激光器。 长波长激光器包括设置在表面等离子体激元波导中表面电流最大的部分的电阻元件,以稳定表面等离子体波导中的第一包层和第二包层之间的电位差。
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公开(公告)号:US20100230596A1
公开(公告)日:2010-09-16
申请号:US12738163
申请日:2008-10-24
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。
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公开(公告)号:US20100135337A1
公开(公告)日:2010-06-03
申请号:US12450211
申请日:2008-03-14
CPC分类号: H01S1/02 , B82Y20/00 , G02F1/3534 , H01S5/0604 , H01S5/0608 , H01S5/1046 , H01S5/1096 , H01S5/187 , H01S5/3402 , H01S2302/02
摘要: Apparatus and methods for generating radiation via difference frequency generation (DFG). In one exemplary implementation, a quantum cascade laser (QCL) has a significant second-order nonlinear susceptibility (χ(2)) integrated in an active region of the QCL. The QCL is configured to generate first radiation at a first frequency ω1, second radiation at a second frequency ω2, and third radiation at a third frequency ω3=ω1−ω2 based on difference frequency generation (DFG) arising from the non-linear susceptibility. In one aspect, the QCL may be configured to generate appreciable THz radiation at room temperature.
摘要翻译: 通过差频发生(DFG)产生辐射的装置和方法。 在一个示例性实现中,量子级联激光器(QCL)具有集成在QCL的有源区域中的显着的二阶非线性磁化率(χ(2))。 QCL被配置为基于由非线性磁化率产生的差频产生(DFG)产生第一频率ω1,第二频率ω2的第二辐射和第三频率ω3=ω1-ω2的第一辐射。 在一个方面,QCL可以被配置成在室温下产生可感知的THz辐射。
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公开(公告)号:US20100059792A1
公开(公告)日:2010-03-11
申请号:US12619758
申请日:2009-11-17
申请人: Michael Shur , Victor Ryzhii , Remigijus Gaska
发明人: Michael Shur , Victor Ryzhii , Remigijus Gaska
IPC分类号: G02F2/00 , H01L29/778
CPC分类号: H01S1/02 , H01S3/094 , H01S3/1628 , H01S2302/02
摘要: A method of managing radiation having a frequency in the terahertz and/or microwave regions. The method comprises providing a semiconducting device having a two-dimensional carrier gas. Plasma waves are generated in the carrier gas using a laser pulse. The frequency of the plasma waves, and as a result, the generated radiation are adjusted using a voltage applied to the semiconducting device.
摘要翻译: 一种管理在太赫兹和/或微波区域中具有频率的辐射的方法。 该方法包括提供具有二维载气的半导体器件。 使用激光脉冲在载气中产生等离子体波。 等离子体波的频率,结果,使用施加到半导体器件的电压来调节所产生的辐射。
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公开(公告)号:US20080298405A1
公开(公告)日:2008-12-04
申请号:US11891360
申请日:2007-08-09
IPC分类号: H01S3/10
CPC分类号: H01S1/02 , G02F2203/13 , H04B10/00
摘要: A method of modulation terahertz radiation comprising: (A) generating Terahertz radiation by pumping nonequilibrium electrons into a Magnon Gain Medium (MGM), wherein propagation of nonequilibrium electrons in the MGM causes generation of nonequilibrium magnons, and wherein interaction between the nonequilibrium magnons causes generation of the Terahertz radiation; and (B) frequency modulating THz radiation generated in the MGM by applying longitudinal AC magnetic field, or by applying AC electrical field bias.
摘要翻译: 一种调制太赫兹辐射的方法,包括:(A)通过将非平衡电子泵送到Magnon Gain Medium(MGM)中来产生太赫兹辐射,其中非平衡电子在MGM中的传播引起非平衡磁子的产生,并且其中非平衡磁子之间的相互作用导致产生 的太赫兹辐射; 和(B)通过施加纵向交流磁场或通过施加交流电场偏置在MGM中产生的频率调制THz辐射。
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公开(公告)号:US20080265165A1
公开(公告)日:2008-10-30
申请号:US11638100
申请日:2006-12-13
申请人: Ka-Lo Yeh , Eric Statz , Keith A. Nelson
发明人: Ka-Lo Yeh , Eric Statz , Keith A. Nelson
IPC分类号: G01J5/02
CPC分类号: G02F1/35 , G02F1/3544 , G02F2001/3542 , G02F2201/17 , G02F2202/20 , H01S1/02
摘要: Methods and apparatus are disclosed for directing optical radiation to make multiple passes across an extended region of an electro-optic material, where during each pass the electro-optic material converts a portion of the optical radiation into terahertz radiation, and where the optical radiation is directed into the electro-optic material to cause an amplitude of the terahertz radiation generated from one or more earlier passes of the optical radiation to be constructively enhanced by the terahertz radiation generated from a later pass of the optical radiation.
摘要翻译: 公开了用于引导光学辐射以跨越电光材料的延伸区域进行多遍的方法和装置,其中在每次通过期间,电光材料将光辐射的一部分转换成太赫兹辐射,并且其中光辐射是 引导到电光材料中,以使得由光辐射的一个或多个较早的通过产生的太赫兹辐射的振幅被由光辐射的稍后通过产生的太赫兹辐射进一步增强。
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公开(公告)号:US07397428B2
公开(公告)日:2008-07-08
申请号:US10526560
申请日:2003-09-04
申请人: Bryan E. Cole , Michael J. Evans , Julian A. Cluff
发明人: Bryan E. Cole , Michael J. Evans , Julian A. Cluff
IPC分类号: H01Q5/00
CPC分类号: G01N21/3581 , G01N21/3563 , H01S1/02
摘要: An emitter for emitting radiation in a first range of frequencies comprising: a photoconductive material (11); and first and second contact elements (12, 13, 14) separated by a photoconducting gap provided by said photoconducting material (11), for applying a bias across said photoconducting gap, wherein at least one of said first and second contact elements (12, 13, 14) comprises a resistive element (14) for restricting current flow between said first and second contact elements in a second range of frequencies lower than the first range of frequencies.
摘要翻译: 用于在第一频率范围内发射辐射的发射器,包括:光电导材料(11); 以及由所述光导材料(11)提供的光导间隔分开的用于跨所述光导间隙施加偏压的第一和第二接触元件(12,13,14),其中所述第一和第二接触元件(12, 13,14)包括用于在低于第一频率范围的第二频率范围内限制所述第一和第二接触元件之间的电流的电阻元件(14)。
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公开(公告)号:US07364993B2
公开(公告)日:2008-04-29
申请号:US10527313
申请日:2003-09-11
申请人: Michael J. Evans , William R. Tribe
发明人: Michael J. Evans , William R. Tribe
IPC分类号: H01L21/265
CPC分类号: H01S1/02 , H01L31/0304 , H01L31/1844 , Y02E10/544
摘要: A semiconductor material with photoconductive properties and a method of the semiconductor, wherein a base material is grown and then annealed post-growth at a temperature of 475° C. or less. It has been found that be annealing at temperatures of 475° C., or less the carrier lifetime of the material and the resistivity can be optimized so as to obtain semiconductor with useful photoconductive properties.
摘要翻译: 具有光导特性的半导体材料和半导体的方法,其中生长基材,然后在475℃或更低的温度下对生长后退火。 已经发现,在475℃的温度下进行退火,或者更少的材料的载流子寿命和电阻率可以被优化,以获得具有有用光导性质的半导体。
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公开(公告)号:US20070228355A1
公开(公告)日:2007-10-04
申请号:US11563916
申请日:2006-11-28
申请人: Brahm Pal SINGH
发明人: Brahm Pal SINGH
IPC分类号: H01L29/06
摘要: Provided is a terahertz (THz) wave radiating device that radiates electromagnetic wave in a THz range, the device including: an anode electrode layer; a cathode electrode layer which forms a pair with the anode electrode layer; an electrical insulating layer (i) which is positioned between the anode electrode layer and the cathode electrode layer, and (ii) in which an aperture is formed and a vacuum is produced, the aperture passing through the electrical insulating layer in a direction in which the electrical insulating layer was laminated; and a photoelectron emission layer (i) which is positioned between the electrical insulating layer and the cathode electrode layer, (ii) which touches the electrical insulating layer, and (iii) which emits photoelectrons to the aperture.
摘要翻译: 提供了一种辐射THz范围内的电磁波的太赫兹(THz)波辐射装置,该装置包括:阳极电极层; 阴极电极层,与阳极电极层形成一对; 位于阳极电极层和阴极电极层之间的电绝缘层(i),和(ii)其中形成孔径和产生真空的孔,通过电绝缘层的孔径沿其方向 层压电绝缘层; 以及位于电绝缘层和阴极电极层之间的光电子发射层(i),(ii)接触电绝缘层,和(iii)向光圈发射光电子的光电子发射层(i)。
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