摘要
研究了采用离子交换和电场辅助退火法制作的铒镱共掺磷酸盐波导放大器的增益特性,测量了Er2O3,Yb2O3掺杂浓度分别为2·2wt%和4·7wt%,长度为1·2cm的器件增益,在130mW,976nm泵浦光泵浦下,输入信号光功率小于1mW时,在1535nm处得到8·5dB的小信号相对增益;当泵浦功率为30mW时,可观测到绿色的上转换辐射光,发光强度随泵浦功率增加而增大;通过单色仪和光电倍增管接收此光,确定是铒粒子由2H11/2和4S3/2能级分别跃迁至基态的上转换辐射光.
An Er^3＋ -Yb^3＋ co-doped phosphate glass waveguide for applications in optical amplifiers is studied. The optical gain at the wavelength of 1535nm is measured, and an 8.5dB relative gain in a 1.2cm device is observed when the waveguide is pumped with a 976nm laser with 130mW of power. In this case, the device shows strong green luminescence, and the intensity increases as the power of the pump laser increases. Also, upconversion from ^2 H11/2 and 4S3/2 levels is confirmed by using a photomultiplier and a monochromator.
基金
国家自然科学基金(批准号:60507004)
新世纪优秀人才支持计划和吉林省科技发展计划(批准号:20050110)资助项目~~
关键词
铒镱共掺波导放大器
光增益
上转换
Er^3＋ -Yb^3＋ co-doped waveguide amplifier
optical gain
upconversion
