Title:
レーザ素子及びレーザ装置
Document Type and Number:
Japanese Patent JP6557753
Kind Code:
B2
Abstract:
A laser element includes a photonic crystal layer on which laser light is incident. The photonic crystal layer includes a base layer formed of a first refractive index medium; and a plurality of different refractive index regions formed of a second refractive index medium having a refractive index different from that of the first refractive index medium and disposed in the base layer. The plurality of different refractive index regions includes a first different refractive index region of which a planar shape is an approximate circle, an approximate square, or an approximate polygon having a rotational symmetry of 90° and a first area perpendicular to a thickness direction; and a second different refractive index region having a second area perpendicular to a thickness direction.
Inventors:
Yu Takiguchi
Yoshiro Nomoto
Yoshiro Nomoto
Application Number:
JP2018084337A
Publication Date:
August 07, 2019
Filing Date:
April 25, 2018
Export Citation:
Assignee:
Hamamatsu Photonics Co., Ltd.
International Classes:
H01S5/022; H01S5/18
Domestic Patent References:
| JP2007208127A | ||||
| JP2007180120A | ||||
| JP2008243962A |
Foreign References:
| US20070109639 |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
Kenichi Shibayama
Yoshiki Kuroki
Kenichi Shibayama