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Title:
TWO-DIMENSIONAL PHOTONIC CRYSTAL LASER
Document Type and Number:
WIPO Patent Application WO/2024/043316
Kind Code:
A1
Abstract:
Provided is a two-dimensional photonic crystal laser that can make the intensity distribution of light in a cross section of a laser beam nearly uniform. A two-dimensional photonic crystal laser (10) comprises: an active layer (11); a two-dimensional photonic crystal layer (12) which is provided on one side of the active layer (11) and in which different-refractive-index regions (122) that have a refractive index different from that of a plate-shaped base material (121) are periodically and two-dimensionally arranged in the base material (121); and a first electrode (171) and a second electrode (172) provided so as to sandwich the active layer (11) and the two-dimensional photonic crystal layer (12) in the stacking direction, wherein the first electrode (171) has an opening (175), a projection (1721) of the circumscribed circle of the second electrode (172) onto the first electrode (171) is located within the opening (175), and at least a portion of the circumference of the opening (175) of the first electrode (171) protrudes into the projection (1721).

Inventors:
NODA SUSUMU (JP)
YOSHIDA MASAHIRO (JP)
DE ZOYSA MENAKA (JP)
INOUE TAKUYA (JP)
Application Number:
PCT/JP2023/030563
Publication Date:
February 29, 2024
Filing Date:
August 24, 2023
Export Citation:
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Assignee:
UNIV KYOTO (JP)
International Classes:
H01S5/042; H01S5/11; H01S5/18
Domestic Patent References:
WO2017038595A12017-03-09
WO2021200168A12021-10-07
WO2002089275A12002-11-07
Foreign References:
JP2021097115A2021-06-24
JP2004241422A2004-08-26
US6356573B12002-03-12
JP2009510730A2009-03-12
JP2019091839A2019-06-13
US20200335943A12020-10-22
JP2020098815A2020-06-25
Other References:
INOUE TAKUYA, YOSHIDA MASAHIRO, GELLETA JOHN, IZUMI KOKI, YOSHIDA KEISUKE, ISHIZAKI KENJI, DE ZOYSA MENAKA, NODA SUSUMU: "General recipe to realize photonic-crystal surface-emitting lasers with 100-W-to-1-kW single-mode operation", NATURE COMMUNICATIONS, NATURE PUBLISHING GROUP, UK, vol. 13, no. 1, 4 July 2022 (2022-07-04), UK, pages 3262, XP093142996, ISSN: 2041-1723, DOI: 10.1038/s41467-022-30910-7
Attorney, Agent or Firm:
KYOTO INTERNATIONAL PATENT LAW OFFICE (JP)
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