公开(公告)号：EP2966737B1

公开(公告)日：2019-05-01

申请号：EP14760954.9

申请日：2014-02-25

Applicant: Japan Science and Technology Agency

Inventor： NODA, Susumu ,  OKINO, Tsuyoshi ,  KITAMURA, Kyoko ,  TANAKA, Yoshinori ,  LIANG, Yong

IPC: H01S5/18 ,  H01S5/12 ,  H01S5/042 ,  H01S5/10 ,  H01S5/20

公开(公告)号：EP2966737A1

公开(公告)日：2016-01-13

申请号：EP14760954.9

申请日：2014-02-25

Applicant: Japan Science and Technology Agency

Inventor： NODA, Susumu ,  OKINO, Tsuyoshi ,  KITAMURA, Kyoko ,  TANAKA, Yoshinori ,  LIANG, Yong

IPC: H01S5/18

CPC classification number: H01S5/18 ,  H01S3/0085 ,  H01S3/10 ,  H01S5/0425 ,  H01S5/105 ,  H01S5/1215 ,  H01S2301/18

Abstract: The present invention provides a two-dimensional photonic crystal surface emitting laser that can emit an inclined beam at a larger inclination angle with a smaller loss in light. Provided is a two-dimensional photonic crystal surface emitting laser comprising a laminated structure including: a two-dimensional photonic crystal (2DPC) layer 11 in which refractive index distribution is formed by two-dimensionally arranging air holes 111 in a plate-shaped base member 114; and an active layer 12 for generating light having a wavelength λ L by receiving an injection of an electric current, the two-dimensional photonic crystal surface emitting laser emitting a laser beam in the direction of an inclination angle θ from the normal to the 2DPC layer 11, wherein the air holes 111 in the 2DPC layer 11 are modulated at respective lattice points of a basic two-dimensional lattice whose periodicity is determined such that a resonant state of the light having the wavelength λ L is created by forming a two-dimensional standing wave while the light is prevented from being emitted to the outside, and a phase Ψ of the modulation is expressed as Ψ=r↑·G'↑ by using a position vector r↑ of each lattice point and a reciprocal lattice vector G'↑=(g' x , g' y )=(k x ±|k↑|(sinθ cosϕ)/n eff , k y ±|k↑|(sinθ sinϕ)/n eff ), the reciprocal lattice vector G'↑ being expressed by using: a wave vector k↑=(k x , k y ) of the light having the wavelength λ L in the 2DPC layer 11; an effective refractive index n eff of the 2DPC layer 11; and an azimuthal angle ϕ from a predetermined reference line of the basic two-dimensional lattice.

Abstract translation: 本发明提供一种二维光子晶体表面发射激光器，其能够以较小的光损失以较大的倾角发射倾斜的光束。 本发明提供一种二维光子晶体表面发射激光器，其包括层压结构，该层压结构包括：二维光子晶体（2DPC）层11，其中折射率分布通过在板状基底部件中二维地布置空气孔111而形成 114; 以及用于通过接收电流的注入来生成具有波长λL的光的有源层12，二维光子晶体表面发射激光器从2DPC层11的法线向倾斜角θ的方向发射激光束 其中2DPC层11中的空气孔111在周期性被确定的基本二维点阵的各个格点处被调制，使得具有波长λL的光的谐振状态通过形成二维驻波 同时防止光被发射到外部，并且通过使用每个格点的位置矢量r↑和倒易格矢量G'来表示调制的相位Ψ被表示为Ψ= r↑·G'↑。 （g'x，g'y）=（kx±| k↑|（sinθcosφ）/ neff，ky±| k↑|（sinθsinφ）/ neff），倒易格型向量G'↑表示为： 在2DPC层1中具有波长λL的光的波矢量k↑=（kx，ky） 1; 2DPC层11的有效折射率neff; 以及从基本二维点阵的预定参考线开始的方位角φ。