摘要

分别对Nufern公司和CorActive公司的光敏性Er/Yb共掺单模光纤采用直接紫外曝光方式制备了分布反馈和分布布拉格反射结构的短腔光纤激光器。实验结果表明：Er/Yb共掺光纤存在与温度有关的猝灭效应。在激光斜率效率测试过程中，当抽运功率达到一定值时，出现了激光输出功率陡然降低的现象。对激光器谐振腔进行辅助散热时，激光转化效率有所升高。通过对同一台激光器进行先后测量发现，再次测量得到的激光器效率总是低于制作完成即时测量的数值；在高抽运条件下，输出功率衰退和受温度影响的状况总是存在。

Abstract

The short cavity fiber lasers with distributed feedback and distributed Bragg reflection structures are fabricated by using direct ultraviolet exposure on the photosensitive Er/Yb co-doped single mode fibers respectively produced in Nufern and CorActive companies. The experimental results show that the quenching effect related to temperature exists in the Er/Yb co-doped fibers. In the process of laser slope efficiency test, the laser output power suddenly falls down when the pump power reaches certain value. But when an auxiliary heat dissipation is given to the laser resonant cavity, the laser conversion efficiency increases by certain value. The successive power measurement results of the same laser show that the laser efficiency measured later is always lower than that measured just after its fabrication. Moreover, the output power decline at high pump power and the temperature-sensitive situation always exist.

补充资料

中图分类号：TN248.1

DOI：10.3788/cjl201643.0801008

所属栏目：激光物理

基金项目：国家自然科学基金（61307101）、山东省自然科学基金（ZR2013FL029）、山东省重点研发计划（2015GGX101001）

收稿日期：2016-01-18

修改稿日期：2016-04-22

网络出版日期：--

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联系人作者：宋志强(szq821214@163.com)

备注：宋志强（1982—），男，硕士，助理研究员，主要从事光纤光栅和光纤激光器方面的研究。

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