低温下掺钕光纤ASE的特性研究

STUDY ON AMPLIFICATION OF SPONTANEOUS EMISSION IN Nd￣(3+)-DOPED FIBER AT LOW TEMPERATURE

在室温３００Ｋ和低温７７Ｋ下对掺钕光纤放大的自发辐射ＡＳＥ光源作了实验研究，发现用８２０纳米光泵浦时，在同等泵浦功率下，浸在液氮中的ＡＳＥ功率是其在室温下的２倍以上，用８３０纳米光泵浦时，浸在液氮中的ＡＳＥ中心波长将红移１８纳米。

The characteristics of ASE in Nd￣3+ - doped fiber at 300K and 77K was investigated. Pumped at wavelength of 820um, the output power of ASE at 77K was 2 times larger than at 300K. Pumped at wave- length of 830um, the central wavelength of ASE at 77K was 18um longer than that at 300k.