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138 条记录 (耗时 0.023 秒)

    Electromagnetic Wave Oscillating Devices and a Method of Producing the Same
    21.
    发明申请
    Electromagnetic Wave Oscillating Devices and a Method of Producing the Same 有权
    电磁波振荡器及其制作方法

    公开(公告)号：US20130156053A1

    公开(公告)日：2013-06-20

    申请号：US13718511

    申请日：2012-12-18

    申请人： NGK INSULATORS, LTD.

    发明人： Jungo Kondo ,  Yuichi Iwata ,  Tetsuya Ejiri

    IPC分类号： H01S5/06

    CPC分类号： H01S5/0604 ,  G02F1/3534 ,  G02F2201/30 ,  G02F2201/38 ,  G02F2203/13

    摘要： It is provided a device oscillating an electromagnetic wave having a target frequency of 0.1 THz to 30 THz. The device includes a main body made of a non-linear optical crystal and a sub-wavelength grating structure formed on the main body. The sub-wavelength grating structure includes protrusions arranged in first direction “X” and second direction “Y” on the main body, first grooves 3X each provided between the adjacent protrusions and extending in the first direction, and second grooves 3Y each provided between the adjacent protrusions and extending in the second direction. Each of the protrusions includes a pair of first faces opposing in the first direction “X” with each other and a pair of second faces opposing in the second direction “Y” with each other. The width of the first face is made smaller from the main body 7 toward an upper end 2c of the protrusion 2.

    摘要翻译： 提供了一种振荡目标频率为0.1THz至30THz的电磁波的装置。 该装置包括由主体构成的非线性光学晶体和亚波长光栅结构的主体。 亚波长光栅结构包括在主体上沿第一方向“X”和第二方向“Y”布置的突起，每个设置在相邻突起之间并在第一方向上延伸的第一凹槽3X， 相邻的突起并沿第二方向延伸。 每个突起包括在第一方向“X”彼此相对的一对第一面和在第二方向“Y”上相对的一对第二面。 第一面的宽度从主体7朝向突起2的上端2c变小。

    METHODS AND APPARATUS FOR GENERATING TERAHERTZ RADIATION
    22.
    发明申请
    METHODS AND APPARATUS FOR GENERATING TERAHERTZ RADIATION 有权
    用于产生TERAHERTZ辐射的方法和装置

    公开(公告)号：US20100135337A1

    公开(公告)日：2010-06-03

    申请号：US12450211

    申请日：2008-03-14

    申请人： Mikhail A. Belkin ,  Federico Capasso ,  Alexey Belyanin

    发明人： Mikhail A. Belkin ,  Federico Capasso ,  Alexey Belyanin

    IPC分类号： H01S5/06 ,  H01S3/30

    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。

    FCSEL that frequency doubles its output emissions using sum-frequency generation
    24.
    发明申请
    FCSEL that frequency doubles its output emissions using sum-frequency generation 失效
    FCSEL使用和频产生频率使其输出发射倍增

    公开(公告)号：US20030160254A1

    公开(公告)日：2003-08-28

    申请号：US10350512

    申请日：2003-01-24

    发明人： Joseph Reid Henrichs

    IPC分类号： H01L033/00

    CPC分类号： H01S5/18341 ,  H01L33/105 ,  H01S5/0604 ,  H01S5/1085 ,  H01S5/18369 ,  H01S5/3215 ,  H01S5/426

    摘要： A nullFolded Cavity Surface Emitting Lasernull (FCSEL) sum frequency generating device capable of generating a second harmonic at room temperatures with high efficiency and output power, while having a small size, low energy consumption, and a low manufacturing cost. A FCSEL sum frequency generating semiconductor diode laser has a multilayered structure that comprises a mode discriminating polyhedral shaped prism waveguide, which is located at one end of two light emitting diodes, a partial photon reflecting mirror, which is located at the opposite end of the two light emitting diodes, and a phase-matching sum-frequency generating superlattice, which is located between the polyhedral shaped prism waveguide and the partial photon reflecting mirror.

    摘要翻译： 一种“折叠腔面发光激光”（FCSEL）和频产生装置，能够在室温下以高效率和输出功率产生二次谐波，同时具有体积小，能耗低，制造成本低。 FCSEL和频产生半导体二极管激光器具有多层结构，其包括位于两个发光二极管的一端的模式识别多面体形状的棱镜波导，部分光子反射镜位于两端的相对端 发光二极管，以及位于多面体形棱镜波导与部分光子反射镜之间的相位匹配和频产生超晶格。

    Compound waveguide lasers and optical parametric oscillators
    25.
    发明授权
    Compound waveguide lasers and optical parametric oscillators 失效
    复合波导激光器和光参量振荡器

    公开(公告)号：US5574818A

    公开(公告)日：1996-11-12

    申请号：US509875

    申请日：1995-08-01

    申请人： Sergej G. Krivoshlykov

    发明人： Sergej G. Krivoshlykov

    IPC分类号： G02F1/35 ,  G02F1/39 ,  H01S3/06 ,  H01S3/063

    CPC分类号： H01S5/0604 ,  G02F1/395 ,  G02F2001/3546 ,  H01S3/0632 ,  H01S3/109

    摘要： A new family of lasers and optical parametric oscillators is based on efficient frequency conversion or doubling in multimode compound optical waveguides. These waveguides exploit specific useful properties of their higher order modes while providing good compatibility with single-mode optical fibers. A mode engineering approach is applied to construct a compound waveguide structure that supports a higher order mode having a sharp peak in its field. This sharp peak simplifies selection of this mode by efficient coupling of its radiation into a single-mode fiber. The lasers and optical parametric oscillators employ wavelength selective properties of this mode field configuration and its unique ability to support efficient frequency conversion and doubling.

    摘要翻译： 一系列新型激光器和光学参数振荡器基于多模复合光波导中的有效的频率转换或倍增。 这些波导利用其高阶模式的特定有用特性，同时提供与单模光纤的良好兼容性。 应用模式工程方法构建支持在其领域具有尖锐峰值的高阶模式的复合波导结构。 该尖峰通过将其辐射有效耦合到单模光纤中来简化了该模式的选择。 激光器和光参量振荡器采用这种模式场配置的波长选择性能及其独特的支持高效变频和倍增的能力。

    Semiconductor heterostructure laser
    26.
    发明授权
    Semiconductor heterostructure laser 失效
    半导体异质结激光器

    公开(公告)号：US5406575A

    公开(公告)日：1995-04-11

    申请号：US168177

    申请日：1993-12-17

    申请人： Alexander A. Chelny ,  Se-yang Park

    发明人： Alexander A. Chelny ,  Se-yang Park

    IPC分类号： H01S3/0941 ,  G02F1/377 ,  H01S3/109 ,  H01S5/00 ,  H01S5/028 ,  H01S5/06 ,  H01S5/20 ,  H01S5/22 ,  H01S5/223 ,  H01S5/32 ,  H01S3/19

    CPC分类号： G02F1/377 ,  H01S5/0604 ,  H01S5/18308 ,  H01S5/18352 ,  H01S5/3202 ,  H01S5/3211

    摘要： The semiconductor heterostructure laser includes a semiconductor substrate, a multilayered light emitting region and an active nonlinear waveguide. The multilayered light emitting region serves as a light source for producing fundamental light of a fundamental frequency. The active nonlinear waveguide comprises a number of multilayered heterostructures which absorb the fundamental light and double the frequency of the fundamental light, resulting in a doubled frequency light. The multilayered heterostructure also has a resonator structure. For effective operation, a first refractive mirror is formed between the semiconductor substrate and the multilayered light emitting region, and a second refractive mirror is formed between the multilayered light emitting region and the active nonlinear waveguide.

    摘要翻译： 半导体异质结构激光器包括半导体衬底，多层发光区域和有源非线性波导。 多层发光区域用作用于产生基本频率的基本光的光源。 主动非线性波导包括吸收基本光并使基本光的频率加倍的多个多层异质结构，导致倍频。 多层异质结构也具有谐振器结构。 为了有效操作，在半导体衬底和多层发光区域之间形成第一折射镜，并且在多层发光区域和有源非线性波导之间形成第二折射镜。