公开(公告)号：US09720301B2

公开(公告)日：2017-08-01

申请号：US14241432

申请日：2012-08-06

Applicant: Nobuhiko Sugihara ,  Kentaro Fujita ,  Takanori Samejima ,  Yoshihiro Horikawa

Inventor： Nobuhiko Sugihara ,  Kentaro Fujita ,  Takanori Samejima ,  Yoshihiro Horikawa

IPC: G02F1/37 ,  G02F1/01 ,  G02F1/35 ,  H01S3/109 ,  H01S5/14 ,  H01S5/022 ,  H01S5/024 ,  H01S5/042 ,  H01S5/0683

CPC classification number: G02F1/37 ,  G02F1/0121 ,  G02F1/353 ,  G02F2201/17 ,  G02F2203/21 ,  H01S3/109 ,  H01S5/02296 ,  H01S5/02446 ,  H01S5/0428 ,  H01S5/0683 ,  H01S5/141

Abstract: The purpose of the present invention is to make it possible to output stable light by optimizing the wavelength conversion efficiency in a wavelength conversion element without employing an optical detection device such as a photo diode in a laser light source device. A fundamental light wave emitted from a semiconductor laser (2) is wavelength converted by a wavelength conversion element (5) and is emitted therefrom. A lighting circuit (20) supplies electric power for the aforementioned semiconductor laser (2) to turn on the semiconductor laser (2). A control unit (21) controls the operation of the device while controlling the amount of power supplied to a heater means (7) such that the wavelength conversion element (5) reaches a temperature at which optimum wavelength conversion efficiency is acquired. The temperature detected by a temperature detection means (Th1) is input to the control unit (21), and the control unit (21) defines the temperature of the wavelength conversion element (5) at which the maximum amount of power is supplied to the heater means (7) as a set temperature at which the optimum wavelength conversion efficiency is acquired, and performs feedback control of the temperature of the wavelength conversion element (5) so that the temperature of the wavelength conversion element (5) reaches the aforementioned set temperature by controlling the amount of heat supplied from the heater means (7).

公开(公告)号：US20150372440A1

公开(公告)日：2015-12-24

申请号：US14748053

申请日：2015-06-23

Applicant: SEIKO EPSON CORPORATION

Inventor： Hitoshi NAKAYAMA

IPC: H01S3/00 ,  G02B5/18 ,  H04N5/30 ,  G02F1/017 ,  G02F1/355 ,  G01J5/10 ,  G02B1/11

CPC classification number: G02F1/3556 ,  G01J3/42 ,  G02B1/11 ,  G02B5/1814 ,  G02B5/1861 ,  G02F1/017 ,  G02F1/3511 ,  G02F1/365 ,  G02F2201/17 ,  G02F2201/346 ,  G02F2202/101 ,  G02F2202/108 ,  G02F2203/26 ,  H01S5/0057

Abstract: A short optical pulse generating apparatus includes: an optical pulse generating portion that generates an optical pulse; and a pulse compressing portion to which the optical pulse is incident and that decreases the pulse width of the optical pulse, wherein the pulse compressing portion includes a quantum well layer, group velocity dispersion layers that are stacked to interpose the quantum well layer therebetween and are formed with a group velocity dispersion medium, and reflective layers that are provided to interpose the quantum well layer and the group velocity dispersion layers in a stacking direction of the quantum well layer and the group velocity dispersion layers.

Abstract translation: 一种短光脉冲发生装置，包括：产生光脉冲的光脉冲产生部; 以及脉冲压缩部分，光脉冲入射到该脉冲压缩部分，并且减小了光脉冲的脉冲宽度，其中脉冲压缩部分包括量子阱层，堆叠在其间插入量子阱层的群速度色散层， 形成有组速度分散介质，以及反射层，其设置成在量子阱层和群速度色散层的层叠方向上插入量子阱层和群速度色散层。

公开(公告)号：US09051177B2

公开(公告)日：2015-06-09

申请号：US12258664

申请日：2008-10-27

Applicant: Robert C. Hoffman

Inventor： Robert C. Hoffman

IPC: B82Y20/00 ,  H01J31/50 ,  G02B5/20 ,  G02B27/46 ,  G02F1/017 ,  G02F1/15 ,  H01L27/146 ,  H01L33/00

CPC classification number: B82Y20/00 ,  G02B5/207 ,  G02B27/46 ,  G02F1/017 ,  G02F1/1506 ,  G02F2201/17 ,  G02F2201/38 ,  G02F2202/101 ,  G02F2202/102 ,  G02F2202/108 ,  G02F2203/52 ,  H01J31/50 ,  H01L27/14625 ,  H01L33/0004 ,  H04Q2213/1301

Abstract: An optical switching system comprising an embodiment with a high pass filter operable to eliminate a portion of frequencies present in an image and an optical device operative to receive the spectrally modified image from the high pass filter, alternatively amplify the spectrally modified image, and propagate at least those frequency components in the spectrally modified image exhibiting a frequency less than an absorption frequency of the optical switching device when the optical switching device is active. Alternatively, the optical switching system may transmit an image only when the system is active. The optical switching system may, for example, comprise superluminescent light emitting diodes which may be, for example, formed in the shape of an inverted truncated prism. For human viewing purposes, the operative transmission ranges may closely coincide with the maximum sensitivity of the photopic response of the corresponding red, blue and green cones in human eyes.

Abstract translation: 一种光学切换系统，包括具有高通滤波器的实施例，该高通滤波器可操作以消除存在于图像中的一部分频率和可操作以从高通滤波器接收频谱修正图像的光学装置，或者放大光谱修正图像，并在 当光开关器件处于活动状态时，频谱修正图像中的频率分量最小，表现出小于光开关器件的吸收频率的频率。 或者，光交换系统可以仅在系统活动时才发送图像。 光学开关系统可以例如包括例如形成为倒棱镜的形状的超发光发光二极管。 为了人类观看目的，手术传播范围可能与人眼中对应的红色，蓝色和绿色锥体的明确反应的最大灵敏度紧密相符。

公开(公告)号：US09042003B2

公开(公告)日：2015-05-26

申请号：US14513058

申请日：2014-10-13

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： Jiang Li ,  Hansuek Lee ,  Tong Chen ,  Kerry Vahala

IPC: G02F2/02 ,  G02F1/225 ,  G02F1/35

CPC classification number: G02F1/353 ,  G02F1/2257 ,  G02F2201/063 ,  G02F2201/17 ,  G02F2201/58 ,  G02F2202/09 ,  G02F2202/105 ,  G02F2203/15 ,  G02F2203/54 ,  G02F2203/56 ,  G02F2203/69

Abstract: A frequency comb generator fabricated on a chip with elimination of a disadvantageous reflow process, includes an ultra-high Q disk resonator having a waveguide that is a part of a wedge structure fabricated from a silicon dioxide layer of the chip. The disk resonator allows generation of a frequency comb with a mode spacing as low as 2.6 GHz and up to 220 GHz. A surface-loss-limited behavior of the disk resonator decouples a strong dependence of pumping threshold on repetition rate.

Abstract translation: 制造在芯片上的消除不利的回流工艺的频率梳发生器包括具有作为由芯片的二氧化硅层制成的楔形结构的一部分的波导的超高Q盘谐振器。 磁盘谐振器允许产生低至2.6GHz和高达220GHz的模式间隔的频率梳。 盘式谐振器的表面损耗受限行为使抽水阈值对重复率的强烈依赖性解耦。

公开(公告)号：US20150029579A1

公开(公告)日：2015-01-29

申请号：US14513058

申请日：2014-10-13

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： Jiang LI ,  Hansuek LEE ,  Tong CHEN ,  Kerry VAHALA

IPC: G02F1/35

CPC classification number: G02F1/353 ,  G02F1/2257 ,  G02F2201/063 ,  G02F2201/17 ,  G02F2201/58 ,  G02F2202/09 ,  G02F2202/105 ,  G02F2203/15 ,  G02F2203/54 ,  G02F2203/56 ,  G02F2203/69

Abstract: A frequency comb generator fabricated on a chip with elimination of a disadvantageous reflow process, includes an ultra-high Q disk resonator having a waveguide that is a part of a wedge structure fabricated from a silicon dioxide layer of the chip. The disk resonator allows generation of a frequency comb with a mode spacing as low as 2.6 GHz and up to 220 GHz. A surface-loss-limited behavior of the disk resonator decouples a strong dependence of pumping threshold on repetition rate.

Abstract translation: 制造在芯片上的消除不利的回流工艺的频率梳发生器包括具有作为由芯片的二氧化硅层制成的楔形结构的一部分的波导的超高Q盘谐振器。 磁盘谐振器允许产生低至2.6GHz和高达220GHz的模式间隔的频率梳。 盘式谐振器的表面损耗受限行为使抽水阈值对重复率的强烈依赖性解耦。

公开(公告)号：US20130077965A1

公开(公告)日：2013-03-28

申请号：US13576216

申请日：2011-02-01

Applicant: Konstantin Nikolic ,  Timothy Constandinou ,  Christofer Toumazou

Inventor： Konstantin Nikolic ,  Timothy Constandinou ,  Christofer Toumazou

IPC: H04B10/08

CPC classification number: H04B10/501 ,  G02F1/015 ,  G02F2001/0156 ,  G02F2201/17 ,  G02F2202/105

Abstract: A method of optically outputting information (e.g. digital data) from a semiconductor device, the method comprising: providing a semiconductor device having a semiconducting p-n junction, the p-n junction having a region of reduced free charge carrier density; applying an electrical signal to modulate the extent of the said region, the electrical signal being representative of the information to be outputted; arranging incident light to pass through at least part of the said region, such that the light is at least partially absorbed in dependence upon the modulated extent of the said region, thereby producing intensity-modulated output light; and detecting the intensity of the output light and thereby determining the outputted information. Also provided is an electro-optical assembly, a package module for mounting a semiconductor device on a printed circuit board, and an integrated circuit chip.

Abstract translation: 一种从半导体器件光学输出信息（例如数字数据）的方法，所述方法包括：提供具有半导体p-n结的半导体器件，所述p-n结具有减小的自由电荷载流子密度的区域; 施加电信号来调制所述区域的范围，所述电信号表示要输出的信息; 使入射光穿过所述区域的至少一部分，使得光根据所述区域的调制范围至少部分地被吸收，由此产生强度调制的输出光; 并检测输出光的强度，从而确定输出的信息。 还提供了一种电光学组件，用于将半导体器件安装在印刷电路板上的封装模块和集成电路芯片。

公开(公告)号：US20110243491A1

公开(公告)日：2011-10-06

申请号：US13038895

申请日：2011-03-02

Applicant: Jun-ichi HASHIMOTO

Inventor： Jun-ichi HASHIMOTO

IPC: G02F1/035

CPC classification number: G02F1/225 ,  G02F1/035 ,  G02F2001/212 ,  G02F2201/17 ,  G02F2201/34

Abstract: A Mach-Zehnder interferometer type optical modulator includes a first end facet and a reflecting portion opposing the first end facet; a single optical coupler including input and output ports, the optical coupler being disposed between the first end facet and the reflecting portion; first and second optical waveguides that are connected to the input ports of the optical coupler; third and fourth optical waveguides that are connected to the output ports of the optical coupler; and a phase shifting section disposed between the optical coupler and the reflecting portion. The phase shifting section includes a first optical waveguide structure constituting part of the third optical waveguide; a first upper electrode on the first optical waveguide structure; a second optical waveguide structure constituting part of the fourth optical waveguide; and a second upper electrode on the second optical waveguide structure.

Abstract translation: 马赫 - 曾德干涉仪型光调制器包括第一端面和与第一端面相对的反射部分; 包括输入和输出端口的单个光耦合器，所述光耦合器设置在所述第一端面与所述反射部分之间; 第一和第二光波导，其连接到光耦合器的输入端口; 第三和第四光波导，其连接到光耦合器的输出端口; 以及设置在光耦合器和反射部分之间的相移部分。 相移部分包括构成第三光波导的一部分的第一光波导结构; 第一光波导结构上的第一上电极; 构成第四光波导的一部分的第二光波导结构; 和在第二光波导结构上的第二上电极。

公开(公告)号：US20110206076A1

公开(公告)日：2011-08-25

申请号：US12854552

申请日：2010-08-11

Applicant: Richard Murison ,  Tullio Panarello ,  Benoit Reid ,  Reynald Boula-Picard

Inventor： Richard Murison ,  Tullio Panarello ,  Benoit Reid ,  Reynald Boula-Picard

IPC: H01S3/10

CPC classification number: B23K26/0622 ,  G02F2001/212 ,  G02F2201/17 ,  H01S3/06754 ,  H01S3/2308 ,  H01S5/0057 ,  H01S5/0085 ,  H01S2301/03

Abstract: Methods and systems are provided to reduce stimulated Brillouin scattering in high power optical fiber amplifiers. In an embodiment, a seed source includes a narrow linewidth semiconductor laser driven with a current ramp that simultaneously sweeps the optical power and the lasing frequency at a rate fast enough to reduce stimulated Brillouin scattering.

Abstract translation: 提供了减少高功率光纤放大器中受激布里渊散射的方法和系统。 在一个实施例中，种子源包括用电流斜坡驱动的窄线宽半导体激光器，其同时以足够快的速率扫描光功率和激光频率以减少受激布里渊散射。

公开(公告)号：US07953128B2

公开(公告)日：2011-05-31

申请号：US12011876

申请日：2008-01-30

Applicant: Daniel Creeden ,  Peter A. Ketteridge

Inventor： Daniel Creeden ,  Peter A. Ketteridge

IPC: H01S3/10

CPC classification number: G02F1/39 ,  G02F1/3534 ,  G02F2201/17 ,  G02F2203/13

Abstract: Structures and techniques are disclosed that enable efficient generation of terahertz (THz) radiation capable of surpassing the fundamental quantum limit, as defined by the Manley-Rowe relations. In one particular embodiment, a difference frequency mixing (DFM) crystal stage receives pump radiation and signal radiation, and generates THz radiation. Leftover signal radiation from the DFM stage is then used to pump an optical parametric oscillator (OPO) stage, which is used to generate another mixing signal and more THz radiation. The output signal and the residual pump from the OPO stage can then be used in a subsequent DFM process to generate even more terahertz radiation, and further drives a subsequent OPO stage. Such cascaded OPO, DFM, OPO staging can be repeated to maximize total amount of THz output power.

公开(公告)号：US20110075690A1

公开(公告)日：2011-03-31

申请号：US12011876

申请日：2008-01-30

Applicant: Daniel Creeden ,  Peter A. Ketteridge

Inventor： Daniel Creeden ,  Peter A. Ketteridge

IPC: H01S3/10

CPC classification number: G02F1/39 ,  G02F1/3534 ,  G02F2201/17 ,  G02F2203/13

Abstract: Structures and techniques are disclosed that enable efficient generation of terahertz (THz) radiation capable of surpassing the fundamental quantum limit, as defined by the Manley-Rowe relations. In one particular embodiment, a difference frequency mixing (DFM) crystal stage receives pump radiation and signal radiation, and generates THz radiation. Leftover signal radiation from the DFM stage is then used to pump an optical parametric oscillator (OPO) stage, which is used to generate another mixing signal and more THz radiation. The output signal and the residual pump from the OPO stage can then be used in a subsequent DFM process to generate even more terahertz radiation, and further drives a subsequent OPO stage. Such cascaded OPO, DFM, OPO staging can be repeated to maximize total amount of THz output power.

Abstract translation: 公开了能够有效地产生能够超过由Manley-Rowe关系定义的基本量子极限的太赫兹（THz）辐射的结构和技术。 在一个具体实施例中，差分频率混合（DFM）晶体级接收泵浦辐射和信号辐射，并产生太赫兹辐射。 然后使用来自DFM级的剩余信号辐射来泵浦光参量振荡器（OPO）级，其用于产生另一混频信号和更多的THz辐射。 然后可以将来自OPO级的输出信号和剩余泵用于随后的DFM过程中，以产生更多的太赫兹辐射，并进一步驱动后续的OPO级。 可以重复这种级联的OPO，DFM，OPO分段，以最大化THz输出功率的总量。