| 2. | The character of fiber laser spectrum is measured by optical spectrum analyzer . the experiment approves the relationship of loss , threshold and lasing wavelength , which is that the higher loss , the higher threshold , and the shorter lasing wavelength 我们用光谱仪测量了激光光谱特性,实验研究了腔损耗及阈值和激射波长的关系,即损耗越大阈值越高,激射波长越短。 |