英语翻译

问题描述:

英语翻译
First there is an optical gain medium that amplifies the light via stimulated emission and second an optical feedback structure that repeatedly passes a resonant light field through the gain medium to establish a very intense,coherent optical field inside the laser.
A second simple configuration for an optical cavity is an optical ring resonator,in which the light circulates as a travelling wave around a closed path defined by three or more mirrors

First there is an optical gain medium that amplifies the light via stimulated emission and second an optical feedback structure that repeatedly passes a resonant light field through the gain medium to...