公开(公告)号：JPH05204010A

公开(公告)日：1993-08-13

申请号：JP16607792

申请日：1992-06-24

申请人： HOFFMANN LA ROCHE

发明人： BUCHECKER RICHARD ,  CHEN XIN-HUA ,  FUENFSCHILLING JUERG ,  HERR ROLF-PETER ,  SCHADT MARTIN ,  SCHMITT KLAUS

IPC分类号： G02F1/35 ,  C07C229/34 ,  C07C229/56 ,  C07C229/64 ,  C07D239/26 ,  C08F12/26 ,  C08F16/28 ,  C08F18/22 ,  C08F20/36 ,  C09K3/00 ,  G02F1/141 ,  G02F1/355 ,  G02F1/361 ,  G02F1/37 ,  G02F1/377 ,  H01S3/109

摘要： PURPOSE: To obtain an optical frequency conversion element having an waveguide layer consisting of x active ferroelctric liquid crystal by applying an optical element in which the periodical length of three-dimensional structure is specified. CONSTITUTION: In the optical element for effectively generating short wave laser light by frequency conversion through the waveguide layer, the waveguide layer consists of a ferroelectric layer x single active monomer or polymer liquid crystal material having periodcal structure for attaining the false phase matching of a led laser beam and the periodical length of the three-dimensional structure is equal to twice of the coherence length 1c=π/Δβ of the material (in the equation, Δβ=βo(2ω)-2βo(ω), provided that ω=angular frequency of basic wave, o = zero-order mode and β=propagation constant of mode). Polymer surface processing coating layers 3, 5 having low refractive indexes are stuck to the surfaces of electrode layers, ferroelectric liquid crystal 4 is arranged between the two coated plates and the thickness of the liquid crystal is fixed by a separating member.