-
公开(公告)号：US10205296B2
公开(公告)日：2019-02-12
申请号：US15616270
申请日：2017-06-07
Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION , HAMAMATSU PHOTONICS K.K. , NTT Advanced Technology Corporation
Inventor： Seiji Toyoda , Yuzo Sasaki , Takashi Sakamoto , Joji Yamaguchi , Tadashi Sakamoto , Koei Yamamoto , Masatoshi Fujimoto , Mahiro Yamada , Shogo Yagi , Yukihiko Ushiyama , Eiichi Sugai , Koji Yoneyama , Kazuo Fujiura
Abstract: Provided is a swept light source including one end surface coupled to a wavelength filter constituted of a diffraction grating and an end mirror via a light deflector and another end surface including a gain medium facing an output coupling mirror and which configures a laser cavity between the end mirror and the output coupling mirror, wherein a drive voltage having an AC voltage on which a DC bias voltage is superimposed is output from a control voltage source of the light deflector to an electrode pair of an electro-optic crystal, light is radiated from a light emitter to the electro-optic crystal, and incident light from the gain medium incident along an optical axis perpendicular to a direction of an electric field formed by the control voltage is deflected in a direction parallel to the electric field, so that wavelength sweeping is performed.
-
公开(公告)号：US20170358899A1
公开(公告)日：2017-12-14
申请号：US15616270
申请日：2017-06-07
Applicant: Nippon Telegraph and Telephone Corporation , Hamamatsu Photonics K.K. , NTT Advanced Technology Corporation
Inventor： Seiji TOYODA , Yuzo Sasaki , Takashi Sakamoto , Joji Yamaguchi , Tadashi Sakamoto , Koei Yamamoto , Masatoshi Fujimoto , Mahiro Yamada , Shogo Yagi , Yukihiko Ushiyama , Eiichi Sugai , Koji Yoneyama , Kazuo Fujiura
CPC classification number: H01S3/1075 , G01B9/02004 , G01B9/02091 , H01S3/08009 , H01S3/107 , H01S5/06216 , H01S5/141 , H01S5/143
Abstract: Provided is a swept light source including one end surface coupled to a wavelength filter constituted of a diffraction grating and an end mirror via a light deflector and another end surface including a gain medium facing an output coupling mirror and which configures a laser cavity between the end mirror and the output coupling mirror, wherein a drive voltage having an AC voltage on which a DC bias voltage is superimposed is output from a control voltage source of the light deflector to an electrode pair of an electro-optic crystal, light is radiated from a light emitter to the electro-optic crystal, and incident light from the gain medium incident along an optical axis perpendicular to a direction of an electric field formed by the control voltage is deflected in a direction parallel to the electric field, so that wavelength sweeping is performed.
-
公开(公告)号：US20170299698A1
公开(公告)日：2017-10-19
申请号：US15513632
申请日：2016-01-06
Applicant: NTT ADVANCED TECHNOLOGY CORPORATION
Inventor： Shogo Yagi , Fumio Saito , Kazunori Naganuma , Eiichi Sugai , Tohru Kodaira , Akira Sawaguchi , Hideki Hagino , Takeshi Watanabe , Noriyuki Ishidu , Hiizu Takemura
CPC classification number: G01S7/4814 , G01C3/08 , G01C7/06 , G01C15/002 , G01S17/10 , G01S17/36
Abstract: Provided is a position locating instrument for a position locating method in which position locating instruments that transmit and receive light beams are arranged in series connection. The position locating instruments reduce error factors and improve measurement accuracy by providing all or some of necessary position and attitude parameters. The position locating instrument has at least one light emission port through which light from a wavelength-changeable light source is emitted; and at least one light receiving port that receives light emitted or reflected by an adjacent position locating instrument. The light emitted from the light emission port has a fanlike pattern and has an emission angle varying, as a monotonic function of a wavelength of the light, in a direction perpendicular to a direction in which the light spreads in the fanlike pattern.
-
-
Search Results
3
records
(took 0.014 seconds)
