| 摘要 |
PURPOSE:To halve the length of laser medium by a method wherein the exciting laser beams advancing in a laser medium is reflected at one end of the laser medium to form an effective absorption region while the exciting laser beams are reciprocating in the laser medium. CONSTITUTION:Within a laser beam source 11 wherein exciting laser beams LA 11 are absorbed to emit basic wave laser beams LA 12 while the exciting laser beams LA 11 are advancing from one end 15A to the other end 15B in the laser medium 15, an effective absorption region is formed in the optical path wherein the exciting laser beams LA 11 reciprocate in the laser medium 15 by making the exciting laser beams LA 11 advancing in the laser medium 15 reflect to the other end 15B of the laser medium 15. Through these procedures, the exciting laser beams LA 11 can be prevented from mixing with the output laser beams LAOUT emitted through an output mirror 16 as stray light to halve the length of laser medium 15. |
