公开(公告)号：US11300800B2

公开(公告)日：2022-04-12

申请号：US16499924

申请日：2018-03-26

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Hiroto Sakai ,  Taro Ando ,  Haruyoshi Toyoda ,  Yoshiyuki Ohtake ,  Yuu Takiguchi ,  Tomoko Hyodo

IPC: G02B27/48 ,  G02B21/06

Abstract: A pseudo speckle pattern generation apparatus includes a first spatial light modulator, a first lens, a second spatial light modulator, a second lens and the like. The first spatial light modulator has a first intensity modulation distribution based on a pseudo random number pattern, and spatially modulates intensity of light output from a light source and increased in beam diameter by a beam expander. The second spatial light modulator has a second intensity modulation distribution based on a filter function, is provided on a plane where a Fourier transformed pattern is generated by the first lens, and spatially modulates intensity of the light reached through the first lens. The second lens optically Fourier transforms a pattern of the light output from the second spatial light modulator to generate a Fourier transformed pattern as a pseudo speckle pattern.

公开(公告)号：US11169310B2

公开(公告)日：2021-11-09

申请号：US16307518

申请日：2017-06-05

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Kuniharu Takizawa ,  Hiroshi Tanaka ,  Haruyoshi Toyoda ,  Yasushi Ohbayashi ,  Hiroto Sakai

IPC: G02F1/03 ,  G02F1/29 ,  G02F1/00 ,  G02B5/30 ,  G01N21/17

Abstract: An optical element includes an electro-optic crystal having an isotropic crystal which belongs to a point group m3m of a cubic system and including an input surface to which input light is input and a rear surface which is a surface on the opposite side of the input surface; a first electrode disposed on the input surface; and a second electrode disposed on the rear surface. The input surface is located along at least one axis between axes obtained by rotating two crystal axes about one remaining crystal axis used as a rotation center at a predetermined angle in three crystal axes of the electro-optic crystal. A direction of an electric field to be induced by a voltage applied to a part between the first electrode and the second electrode is set in a propagation direction of the input light.

公开(公告)号：US11156816B2

公开(公告)日：2021-10-26

申请号：US16307511

申请日：2017-06-05

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Kuniharu Takizawa ,  Hiroshi Tanaka ,  Haruyoshi Toyoda ,  Yasushi Ohbayashi ,  Hiroto Sakai

IPC: G02B21/00 ,  G02F1/03 ,  H04N5/225

Abstract: A reflective spatial light modulator includes a perovskite-type electro-optic crystal having a relative permittivity of 1,000 or higher and including an input surface to which the input light is input and a rear surface which faces the input surface; a light input and output unit disposed on the input surface of the electro-optic crystal and including a first electrode through which the input light is transmitted; a light reflecting unit including a pixel electrode portion including a plurality of second electrodes and an adhesion layer fixing the pixel electrode portion to the rear surface, is disposed on the rear surface of the electro-optic crystal, and reflects the input light toward the input and output unit; and a drive circuit for applying an electric field between the first electrode and the plurality of second electrodes. The adhesion layer includes a dielectric material in a cured material of a non-conducting adhesive material.

公开(公告)号：US10824114B2

公开(公告)日：2020-11-03

申请号：US15945016

申请日：2018-04-04

Applicant: HAMAMATSU PHOTONICS K.K. ,  INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION NATIONAL INSTITUTES OF NATURAL SCIENCES

Inventor： Hiroto Sakai ,  Kenji Ohmori ,  Taro Ando ,  Nobuyuki Takei ,  Haruyoshi Toyoda ,  Yoshiyuki Ohtake ,  Tomoko Hyodo ,  Yuu Takiguchi

IPC: G03H1/08 ,  G03H1/16 ,  G03H1/04 ,  G03H1/00 ,  G21K1/00 ,  G03H1/22 ,  H05H3/00

Abstract: A quantum simulator includes a pseudo speckle pattern generator, a main vacuum chamber, an atomic gas supply unit, a light beam generator, a photodetector, and an atom number detector. The pseudo speckle pattern generator generates a pseudo speckle pattern in the inside of the main vacuum chamber by light allowed to enter the inside of the main vacuum chamber through the second window. The pseudo speckle pattern generator includes a controller, a light source, a beam expander, a spatial light modulator, and a lens. The controller sets a modulation distribution of the spatial light modultor based on a two-dimensional pseudo random number pattern.