公开(公告)号：US07158548B2

公开(公告)日：2007-01-02

申请号：US10282745

申请日：2002-10-29

申请人： Alan Cox ,  Lawrie Gloster ,  Steve Lane

发明人： Alan Cox ,  Lawrie Gloster ,  Steve Lane

IPC分类号： H01S3/081 ,  H01S3/10

CPC分类号： H01S3/109 ,  H01S3/08036 ,  H01S3/0815 ,  H01S3/1643 ,  H01S3/1673 ,  H01S2301/02

摘要： A laser cavity comprising a gain medium and first and second end mirrors, wherein the laser cavity further comprises a birefringent material and a mirror arranged to fold light propagating within the laser cavity through a predetermined angle, wherein the predetermined angle is selected such that the reflectivity of the fold mirror is polarisation dependent, and the birefringence of the birefringent material co-operates with the polarisation dependent reflectivity of the fold mirror to form a Lyott filter which suppresses oscillation of unwanted laser modes. The invention allows the construction of a low loss, high finesse laser cavity with longitudinal mode control. The need for introduction of an extra polarisation selection element to form a Lyott filter is removed.

摘要翻译： 一种包括增益介质和第一和第二端镜的激光腔，其中所述激光腔还包括双折射材料和反射镜，所述双折射材料和反射镜被布置成将在所述激光腔内传播的光折射预定角度，其中所述预定角度被选择为使得所述反射率 折射镜的偏振相关，并且双折射材料的双折射与折射镜的偏振相关反射率协作以形成抑制不期望的激光模式的振荡的莱奥特滤波器。 本发明允许构造具有纵向模式控制的低损耗，高精细度的激光腔。 消除了引入额外的极化选择元件以形成Lyott滤波器的需要。