| 摘要 |
PROBLEM TO BE SOLVED: To obtain an edge pumping system solid state laser in which both high output and high quality are realized. SOLUTION: A parallel pumping light 1 is converted through a Bessel beam optical system 10 into a Bessel beam which is then directed to the solid state laser medium 40 in an edge pumping system solid state laser. The Bessel beam can have a longer depth of focus for fixed beam diameter and when the oscillation mode region of solid state laser medium 40 is confined in a pumping region determined by the depth of focus and the beam diameter, both high output and high quality can be realized. |
