摘要
应用二氧化碳激光熔融法加工掺铒光纤顶端,依靠表面张力在光纤顶端形成球形度较高的掺铒微球腔。室温下测量熔融法制备的尺寸为21μm的掺铒微球,通过精确调节掺铒微球的位置使980nm的泵浦光照到合适的位置,得到了铒离子能级跃迁单一模式的荧光谱线,中心波长在1.55μm左右,证明了微腔的选频作用。通过进一步分析谱线计算出微球的Q值在108量级,实验测得自由频谱宽度与理论计算的结果基本一致。
By using Co2 laser melting to process erbium-doped fiber tip,a high spherical erbium-doped microsphere cavity is formed through surface tension.The size of erbium-doped microsphere is 21μm.By adjusting the location of erbium-doped microspheres precisely,using 980nm laser as the pumping source,the single mode erbium ion photon fluorescence spectra is obtainod,of which the central wavelength is around 1.55μm.It proves the frequency selection role of micro-cavity.Through further analysis of the spectrum,the Q of microsphere 108 is calculatecl,and the free spectral range in real measarment is basically consistent with that in theoretical analysis.
出处
《通信技术》
2010年第11期160-161,164,共3页
Communications Technology
基金
国家自然科学基金资助项目(批准号:50975266
60778029)
山西省研究生优秀创新资助项目(NO.20093076)
关键词
熔融法
能级跃迁
微腔
选频
melting
level transition
microcavity
frequency selection
