公开(公告)号：US20220252453A1

公开(公告)日：2022-08-11

申请号：US17672114

申请日：2022-02-15

Applicant: THE UNIVERSITY OF TOKYO

Inventor： Daisuke HIRANO ,  Makoto GONOKAMI ,  Kosuke YOSHIOKA

IPC: G01J3/18 ,  G01J3/28 ,  G01J3/02 ,  G01J3/10 ,  G01J3/45

Abstract: A coherent light source outputs coherent light including high-order harmonics obtained by irradiating short-pulse laser light to a nonlinear medium. A spectrometer includes a grating that diffracts the coherent light and an image sensor that measures an image of the diffracted light. In a first state, a first double slit having a pair of apertures spaced apart in a first direction is arranged at a predetermined position between coherent light source and an incident slit of spectrometer. In a second state, a second double slit that is a replica of first double slit is arranged at the predetermined position as a replacement of first double slit with a sample held in one aperture. A calculation processing device calculates optical constants of the sample based on interference images measured in the first and second states.

公开(公告)号：US20140363338A1

公开(公告)日：2014-12-11

申请号：US14294480

申请日：2014-06-03

Applicant: CANON KABUSHIKI KAISHA ,  The University of Tokyo

Inventor： Takashi SUKEGAWA ,  Yohei KOBAYASHI ,  Akira OZAWA ,  Mamoru ENDO ,  Makoto GONOKAMI

IPC: G02B27/10 ,  G02B5/18 ,  G01N21/75 ,  G01J3/28 ,  G01J3/18

CPC classification number: G02B27/1086 ,  G01J1/0411 ,  G01J1/0414 ,  G01J1/0425 ,  G01J3/0208 ,  G01J3/021 ,  G01J3/0218 ,  G01J3/0221 ,  G01J3/0291 ,  G01J3/18 ,  G01J3/1804 ,  G01J3/22 ,  G01J3/2823 ,  G01J2003/1861 ,  G01N21/75 ,  G02B5/18 ,  G02B2005/1804

Abstract: The present invention provides a spectral apparatus for spectrally separating light including a predetermined wavelength, including a slit that the light enters, a first optical system configured to collimate the light from the slit, a transmissive type diffraction element configured to diffract the light from the first optical system, and a second optical system including a first mirror configured to reflect the light diffracted by the transmissive type diffraction element, and a second mirror configured to reflect the light reflected by the first mirror and diffracted by the transmissive type diffraction element, and configured to make the light reciprocally travel between the first mirror and the second mirror via the transmissive type diffraction element.

Abstract translation: 本发明提供了一种用于光谱分离包括光入射的狭缝的预定波长的光的光谱装置，被配置为准直来自狭缝的光的第一光学系统，被配置为衍射来自第一 光学系统，以及第二光学系统，包括被配置为反射由透射型衍射元件衍射的光的第一反射镜，以及被配置为反射由第一反射镜反射并被透射型衍射元件衍射的光的第二反射镜， 以使光通过透射型衍射元件在第一反射镜和第二反射镜之间往复行进。