公开(公告)号：US08488125B2

公开(公告)日：2013-07-16

申请号：US12865171

申请日：2009-05-12

Applicant: Kentaro Furusawa ,  Natsuhiko Mizutani ,  Ryo Kuroda

Inventor： Kentaro Furusawa ,  Natsuhiko Mizutani ,  Ryo Kuroda

IPC: G01B9/02

CPC classification number: G01B9/02014 ,  G01B9/02004 ,  G01B9/02069 ,  G01B9/02091

Abstract: An optical tomography imaging a tomogram by using a coherent light by a backscattering light of a measured object and a reflected light of a reference mirror, which has supercontinuum light sources, an optical system having group velocity dispersion connected to the supercontinuum light source, an optical detection element detecting a coherent light by a backscattering light of the measured object and a reflected light of the reference mirror, a timing detection element detecting a timing of each wavelength component in an output light from the optical system having the group velocity dispersion, and a unit sampling a signal from the optical detector by using a timing signal from the timing detection element with a signal from the supercontinuum light source as a trigger, and detecting an optical tomogram signal imaging a tomogram, thereby acquiring an optical tomogram at a higher speed than a conventional SS-OCT.

Abstract translation: 光学断层摄影通过使用具有超连续光源的测量对象的反向散射光和参考反射镜的反射光使用相干光来成像断层图像，具有连接到超连续光源的组速度色散的光学系统，光学 检测元件通过测量对象的后向散射光和参考反射镜的反射光来检测相干光，定时检测元件，检测来自具有组速度色散的光学系统的输出光中的每个波长分量的定时，以及 通过使用来自定时检测元件的来自超连续光源的信号的定时信号作为触发来对来自光学检测器的信号进行采样，并且检测成像断层图像的光学层析图像信号，从而以更高的速度获取光学层析图像 常规的SS-OCT。

公开(公告)号：US20120177332A1

公开(公告)日：2012-07-12

申请号：US13421378

申请日：2012-03-15

Applicant: Takashi Katagiri ,  Toshihiko Ouchi ,  Kentaro Furusawa

Inventor： Takashi Katagiri ,  Toshihiko Ouchi ,  Kentaro Furusawa

IPC: G02F1/365

CPC classification number: H01S3/0057 ,  G02B6/02214

Abstract: Optical pulse compensator having a chirp unit including a normal dispersion fiber that provides a positive chirp to an input pulse and having a dispersion compensator including an anomalous fiber is provided. The nonlinear coefficient and the absolute value of the second-order group-velocity dispersion of the anomalous fiber that forms the dispersion compensator is set such that a soliton order becomes one or more, and the fiber length of the anomalous dispersion fiber is made to be equal to or smaller than a length required for optical soliton formation.

Abstract translation: 提供了一种光脉冲补偿器，其具有包括向输入脉冲提供正啁啾并具有包括异常纤维的色散补偿器的正常色散光纤的啁啾单元。 形成色散补偿器的异常光纤的二阶群速度色散的非线性系数和绝对值被设定为使得孤子阶数变为一个或多个，并且使异常色散光纤的光纤长度为 等于或小于光孤子形成所需的长度。

公开(公告)号：US07953130B2

公开(公告)日：2011-05-31

申请号：US12354716

申请日：2009-01-15

Applicant: Toshihiko Ouchi ,  Takashi Katagiri ,  Kentaro Furusawa

Inventor： Toshihiko Ouchi ,  Takashi Katagiri ,  Kentaro Furusawa

IPC: H01S3/067

CPC classification number: H01S3/0057 ,  G01N21/3586 ,  G01N21/4795 ,  H01S1/02 ,  H01S3/06754 ,  H01S3/2308

Abstract: A pulse laser apparatus includes a laser configured to generate a pulse of a laser beam, a fiber amplifier, and a pulse compressor. The fiber amplifier includes a rare-earth doped fiber that exhibits normal dispersion at a wavelength of the laser beam generated from the laser. The pulse laser apparatus further includes a unit configured to give a loss to energy portions in a wavelength region corresponding to a zero-dispersion wavelength of the rare-earth doped fiber and/or a wavelength region longer than the zero-dispersion wavelength within a wavelength spectrum of the laser beam having been chirped in the fiber amplifier.

Abstract translation: 脉冲激光装置包括：激光器，其被配置为产生激光束的脉冲，光纤放大器和脉冲压缩器。 光纤放大器包括在从激光器产生的激光束的波长处表现出正常色散的稀土掺杂光纤。 所述脉冲激光装置还具备：对与所述稀土类掺杂光纤的零色散波长对应的波长区域和/或比波长范围内的零色散波长长的波长区域的能量部分产生损耗的单元 已经在光纤放大器中啁啾的激光束的光谱。

公开(公告)号：US20110304853A1

公开(公告)日：2011-12-15

申请号：US13154127

申请日：2011-06-06

Applicant: Tomohiro Yamada ,  Kentaro Furusawa

Inventor： Tomohiro Yamada ,  Kentaro Furusawa

IPC: G01B9/02 ,  H01S3/10

CPC classification number: G01B9/02007 ,  G01B9/02004 ,  G01B9/02027 ,  G01B9/02091 ,  H01S3/08013 ,  H01S3/083 ,  H01S3/10046 ,  H01S5/0085 ,  H01S5/0656 ,  H01S5/0657 ,  H01S5/06835 ,  H01S5/14 ,  H01S5/4012 ,  H01S5/4087

Abstract: A light source apparatus includes a laser oscillator equipped with a first optical resonator, a plurality of second optical resonators including input portions respectively connected in parallel to the first optical resonator, a plurality of light extraction units configured to extract a light beam from an output portion of each second optical resonator, and a light multiplexing unit configured to multiplex the light beam extracted from each light extraction unit, wherein the light source apparatus causes the light multiplexing unit to output a multiplexed light beam passed through the plurality of second optical resonators, an optical member having refractive index dispersion and an optical amplification medium are disposed in each of the plurality of second optical resonators, and the optical amplification media of the plurality of second optical resonators are different from each other in maximum gain wavelength.

Abstract translation: 光源装置包括配备有第一光谐振器的激光振荡器，包括分别并联连接到第一光谐振器的输入部分的多个第二光谐振器，多个光提取单元，被配置为从输出部分 以及光复用单元，其被配置为对从每个光提取单元提取的光束进行多路复用，其中所述光源装置使所述光复用单元输出通过所述多个第二光谐振器的复用光束， 具有折射率色散的光学构件和光学放大介质设置在多个第二光学谐振器中的每一个中，多个第二光学谐振器的光学放大介质在最大增益波长方面彼此不同。

公开(公告)号：US20100309480A1

公开(公告)日：2010-12-09

申请号：US12865171

申请日：2009-05-12

Applicant: Kentaro Furusawa ,  Natsuhiko Mizutani ,  Ryo Kuroda

Inventor： Kentaro Furusawa ,  Natsuhiko Mizutani ,  Ryo Kuroda

IPC: G01B9/02

CPC classification number: G01B9/02014 ,  G01B9/02004 ,  G01B9/02069 ,  G01B9/02091

Abstract: An optical tomography imaging a tomogram by using a coherent light by a backscattering light of a measured object and a reflected light of a reference mirror, which has supercontinuum light sources, an optical system having group velocity dispersion connected to the supercontinuum light source, an optical detection element detecting a coherent light by a backscattering light of the measured object and a reflected light of the reference mirror, a timing detection element detecting a timing of each wavelength component in an output light from the optical system having the group velocity dispersion, and a unit sampling a signal from the optical detector by using a timing signal from the timing detection element with a signal from the supercontinuum light source as a trigger, and detecting an optical tomogram signal imaging a tomogram, thereby acquiring an optical tomogram at a higher speed than a conventional SS-OCT.

Abstract translation: 光学断层摄影通过使用具有超连续光源的测量对象的反向散射光和参考反射镜的反射光使用相干光来成像断层图像，具有连接到超连续光源的组速度色散的光学系统，光学 检测元件通过测量对象的后向散射光和参考反射镜的反射光来检测相干光，定时检测元件，检测来自具有组速度色散的光学系统的输出光中的每个波长分量的定时，以及 通过使用来自定时检测元件的来自超连续光源的信号的定时信号作为触发来对来自光学检测器的信号进行采样，并且检测成像断层图像的光学层析图像信号，从而以更高的速度获取光学层析图像 常规的SS-OCT。

公开(公告)号：US07760361B2

公开(公告)日：2010-07-20

申请号：US12169354

申请日：2008-07-08

Applicant: Kentaro Furusawa

Inventor： Kentaro Furusawa

IPC: G01N21/55

CPC classification number: G01N21/553 ,  G01N2201/0636

Abstract: A detection apparatus arranges a light source, a curved surface prism having a curved surface and a plane surface, a metal film placed on the plane surface of the prism to be held adjacently to a test sample, and a reflecting member for reflecting light such that light emitted by the light source enters the prism through the curved surface and is reflected by the metal film, then by the reflecting member, and again by the metal film. The detection apparatus is adapted to detect an optical change in the test sample by means of surface plasmon generated on the metal film. In the detection apparatus, divergent light is made to enter the prism through the curved surface to collimate the incident light by means of the curved surface. The apparatus can suppress the broadening of the resonant bandwidth so as to operate as a monitor with a higher degree of precision.

Abstract translation: 检测装置配置光源，具有弯曲面和平面的曲面棱镜，配置在与被测试样相邻地保持在棱镜的平面上的金属膜和反射光，使得 由光源发射的光通过弯曲表面进入棱镜，并被金属膜反射，然后被反射构件反射，并再次被金属膜反射。 检测装置适于通过在金属膜上产生的表面等离子体激元检测测试样品中的光学变化。 在检测装置中，使发散光通过弯曲表面进入棱镜，以通过弯曲表面准直入射光。 该装置可以抑制谐振带宽的扩大，从而以更高的精度操作为监视器。

公开(公告)号：US20090213880A1

公开(公告)日：2009-08-27

申请号：US12354716

申请日：2009-01-15

Applicant: Toshihiko Ouchi ,  Takashi Katagiri ,  Kentaro Furusawa

Inventor： Toshihiko Ouchi ,  Takashi Katagiri ,  Kentaro Furusawa

IPC: H01S3/10

CPC classification number: H01S3/0057 ,  G01N21/3586 ,  G01N21/4795 ,  H01S1/02 ,  H01S3/06754 ,  H01S3/2308

Abstract: A pulse laser apparatus includes a laser configured to generate a pulse of a laser beam, a fiber amplifier, and a pulse compressor. The fiber amplifier includes a rare-earth doped fiber that exhibits normal dispersion at a wavelength of the laser beam generated from the laser. The pulse laser apparatus further includes a unit configured to give a loss to energy portions in a wavelength region corresponding to a zero-dispersion wavelength of the rare-earth doped fiber and/or a wavelength region longer than the zero-dispersion wavelength within a wavelength spectrum of the laser beam having been chirped in the fiber amplifier.

Abstract translation: 脉冲激光装置包括：激光器，其被配置为产生激光束的脉冲，光纤放大器和脉冲压缩器。 光纤放大器包括在从激光器产生的激光束的波长处表现出正常色散的稀土掺杂光纤。 所述脉冲激光装置还具备：在与所述稀土类掺杂光纤的零色散波长对应的波长区域和/或比波长范围内的零色散波长长的波长区域的能量部分产生损耗的单元 已经在光纤放大器中啁啾的激光束的光谱。

公开(公告)号：US20090190893A1

公开(公告)日：2009-07-30

申请号：US12355310

申请日：2009-01-16

Applicant: Takashi Katagiri ,  Toshihiko Ouchi ,  Kentaro Furusawa

Inventor： Takashi Katagiri ,  Toshihiko Ouchi ,  Kentaro Furusawa

IPC: G02F1/365

CPC classification number: H01S3/0057 ,  G02B6/02214

Abstract: Optical pulse compressor having a chirp unit including a normal dispersion fiber that provides a positive chirp to an input pulse and having a dispersion compensator including an anomalous fiber is provided. The nonlinear coefficient and the absolute value of the second-order group-velocity dispersion of the anomalous fiber that forms the dispersion compensator is set such that a soliton order becomes one or more, and the fiber length of the anomalous dispersion fiber is made to be equal to or smaller than a length required for optical soliton formation.

Abstract translation: 提供具有啁啾单元的光脉冲压缩机，其包括向输入脉冲提供正啁啾并具有包括异常光纤的色散补偿器的正常色散光纤。 形成色散补偿器的异常光纤的二阶群速度色散的非线性系数和绝对值被设定为使得孤子阶数变为一个或多个，并且使异常色散光纤的光纤长度为 等于或小于光孤子形成所需的长度。

公开(公告)号：US20090027680A1

公开(公告)日：2009-01-29

申请号：US12169354

申请日：2008-07-08

Applicant: Kentaro Furusawa

Inventor： Kentaro Furusawa

IPC: G01N21/55

CPC classification number: G01N21/553 ,  G01N2201/0636

Abstract: A detection apparatus arranges a light source, a curved surface prism having a curved surface and a plane surface, a metal film placed on the plane surface of the prism to be held adjacently to a test sample, and a reflecting member for reflecting light such that light emitted by the light source enters the prism through the curved surface and is reflected by the metal film, then by the reflecting member, and again by the metal film. The detection apparatus is adapted to detect an optical change in the test sample by means of surface plasmon generated on the metal film. In the detection apparatus, divergent light is made to enter the prism through the curved surface to collimate the incident light by means of the curved surface. The apparatus can suppress the broadening of the resonant bandwidth so as to operate as a monitor with a higher degree of precision.

Abstract translation: 检测装置配置光源，具有弯曲面和平面的曲面棱镜，配置在与被测试样相邻地保持在棱镜的平面上的金属膜和反射光，使得 由光源发射的光通过弯曲表面进入棱镜，并被金属膜反射，然后被反射构件反射，并再次被金属膜反射。 检测装置适于通过在金属膜上产生的表面等离子体激元检测测试样品中的光学变化。 在检测装置中，使发散光通过弯曲表面进入棱镜，以通过弯曲表面准直入射光。 该装置可以抑制谐振带宽的扩大，从而以更高的精度操作为监视器。

公开(公告)号：US20090021742A1

公开(公告)日：2009-01-22

申请号：US12174776

申请日：2008-07-17

Applicant: Kentaro Furusawa ,  Natsuhiko Mizutani ,  Ryo Kuroda

Inventor： Kentaro Furusawa ,  Natsuhiko Mizutani ,  Ryo Kuroda

IPC: G01N21/55

CPC classification number: G01N21/553

Abstract: A plasmon sensor apparatus using a metallic fine periodic structure designed to reduce the dependences of the resonance wavelength and sensitivity on the incident angle. The plasmon sensor apparatus has a sensing element including a metallic member having periodic slit openings and metallic portions, and a substrate on which the metallic member is held, a light source which emits light so that the light is incident on the sensing element, and a photodetector which detects light obtained from the light source. If the period of the slit openings is Λ; the width of the metallic portions is d; and the thickness of the metallic member is h, the aspect ratio h/(Λ−d) of the slit openings is 3 or higher and the opening width (Λ−d) is equal to or smaller than the wavelength of light applied from the light source to the sensing element.

Abstract translation: 一种使用金属微细周期结构的等离子体激元传感器装置，其设计用于降低谐振波长和灵敏度对入射角的依赖性。 等离子体激元传感器装置具有感测元件，其包括具有周期性狭缝开口的金属部件和金属部分，以及保持金属部件的基板，发射光以使得光入射到感测元件上的光源，以及 检测从光源获得的光的光电检测器。 如果狭缝开口的周期是λ; 金属部分的宽度为d; 并且金属构件的厚度为h，狭缝开口的长宽比h /（λ-d）为3以上，开口宽度（λ-d）为从 光源传感元件。