Invention Grant
- Patent Title: Photonic crystal laser
- Patent Title (中): 光子晶体激光器
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Application No.: US13581743Application Date: 2011-03-01
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Publication No.: US09048623B2Publication Date: 2015-06-02
- Inventor: Susumu Noda , Kyoko Kitamura , Yoshitaka Kurosaka , Kyosuke Sakai
- Applicant: Susumu Noda , Kyoko Kitamura , Yoshitaka Kurosaka , Kyosuke Sakai
- Applicant Address: JP Kyoto
- Assignee: KYOTO UNIVERSITY
- Current Assignee: KYOTO UNIVERSITY
- Current Assignee Address: JP Kyoto
- Agency: Oliff PLC
- Priority: JP2010-044255 20100301
- International Application: PCT/JP2011/054566 WO 20110301
- International Announcement: WO2011/108510 WO 20110909
- Main IPC: H01S5/18
- IPC: H01S5/18 ; H01S5/10 ; B82Y20/00 ; H01S5/187 ; H01S5/026 ; H01S5/343

Abstract:
A photonic crystal laser capable of producing a radially-polarized halo-shaped laser beam having a smaller width than conventional beams includes: an active layer; a ring-shaped photonic crystal including a plate-shaped base body on one side of the active layer, the base body having a number of modified refractive index areas of the same shape, the modified refractive index areas having a refractive index different from the base body and periodically arranged in the circumferential direction of a ring, and each of the modified refractive index areas being asymmetrically shaped with respect to an axis extending through the center of the modified refractive index area in the radial direction of the ring; a first and second electrode facing each other across the active layer and the ring-shaped photonic crystal; and a window provided in the second electrode capable of allowing passage of a laser light generated from the ring-shaped photonic crystal.
Public/Granted literature
- US20130003768A1 PHOTONIC CRYSTAL LASER Public/Granted day:2013-01-03
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