| 摘要 |
In a solid state, optically end-pumped laser, the laser gain medium has a tapered diameter to minimise the maximum path length of barreling amplified stimulated emission (ASE), and a roughened surface region at one end to scatter barrelling ASE out of the gain medium; thereby minimising the negative effective of barrelling ASEs, and inhibiting the trapping of rays with a large longitudinal component, but disallowing a cyclic i.e. repeated pass path with specular reflections. |
