公开(公告)号：EP1610427A4

公开(公告)日：2006-10-25

申请号：EP04722669

申请日：2004-03-23

申请人： JAPAN SCIENCE & TECH AGENCY

发明人： NODA SUSUMU ,  YOKOYAMA M ,  SEKINE K ,  MIYAI EIJI

IPC分类号： G02B6/12 ,  H01S5/10 ,  H01S5/18 ,  H01S5/183

CPC分类号： H01S5/18355 ,  H01S5/105 ,  H01S5/18338

摘要： A two-dimensional photonic crystal surface-emitting laser in which a photonic crystal periodic structure body (21), comprising an active layer (a first medium) (12) that emits light by carrier injection or a second medium disposed near it and being different in refractive index, is arranged at a two-dimensional period. The lattice structure of a photonic crystal (20) is a tetragonal lattice or an orthogonal lattice, and is provided with translational symmetry but not with rotational symmetry. Or, the lattice structure of a photonic crystal (20) is a tetragonal lattice or an orthogonal lattice, and is either p1, pm, pg or cm according to two-dimensional pattern classification method. Most preferably, the shape of a lattice point is almost triangular.