| 摘要 |
PURPOSE:To realize multi-beam multi-wavelength type Raman laser oscillation and to obtain a highly efficient and simplified Raman laser system, by constituting only a pair of mirrors within a Raman converter and by applying multi- beam system. CONSTITUTION:In a primary mirror 31 and a secondary mirror 32 which have spot positions on two different circumferences (concentric circle) from the center of a mirror, the primary mirror 31 is provided with input ports A and B each at an arbitrary spot position on each circumference. Similarly, the secondary mirror 32 is provided with output ports (a) and (b) for A and B, respectively for projecting laser beam at a specified number of reflections. Two excitation CO2 laser beams of the same wavelength are input from the primary mirror at the same time, for example, the laser beam input from the input port of the spot position 0 reflects at the spot position 1 of the secondary mirror and is reflected at the spot position 3 of the primary mirror. Thus reciprocating reflections are repeated to project Raman laser of two beams after Raman- conversion before reaching an output port d. |
