At 40 , gray - haired and frail , he saw " a cadaver almost " when he looked at himself in the mirror 尽管他当时才40岁，就已是满头白发，形容枯槁。当他照镱子，看到的自己"几乎是一具僵尸" 。
Several factors in influencing the capabilities of er ~ ( 3 + ) / yb ~ ( 3 + ) co - doped phosphate glass waveguide laser were introduced 其次论述了影响铒镱共掺磷酸盐玻璃光波导激光器性能的几个主要因素。
D . c hanna , r . m percival . continuous - wave oscillation of a monomode ytterbium - doped fibre laser [ j ] . electronics letters , 1988 , 24 ( 17 ) : 1111 - 1113 张强.掺镱双包层光纤激光器实验研究及圆盘光纤激光器设计[ d ] .硕士学位论文, 2003年,天津大学
Each chemic and physical characteristics of phosphate glass is discribed , the compounding and fabrication of er / yb co - doped phosphate gain material are argued 对磷酸盐玻璃的各种成份进行了测试,然后通过熔制得到铒镱共掺磷酸盐增益玻璃材料。
Furthermore the optic spectrum data of er / yb co - doped phosphate glass , such as absorption spectrum , fluorescence lifetime and emission spectrum etc . are also tested 此外还对铒镱共掺磷酸盐增益玻璃材料的吸收谱、荧光寿命、激发谱等光谱性能进行了测试。
We have observed and recorded the relaxation oscillation of double - clad ytterbium - doped fiber laser by a digital oscillograph . the relaxation oscillation frequency is 20 . 0khz 我们使用示波器观察并记录了双包层掺镱光纤激光器的弛豫振荡现象，得到弛豫振荡频率为20 . 0khz 。
This paper presents the technological design and the process of manufacture of yb film stress sensor , which are verified to be feasible by material testing and sensor calibrating in dynamic and static states 介绍了镱薄膜应力传感器的工艺设计和制造过程，通过传感器的静态、动态标定及材料测试，验证了新的工艺设计和制造过程是正确可行的。
Phosphate glass is an ideal material for high erbium - doped . erbium ion has large emission section in phosphate glass , however , it has small absorb section for 980nm pump light , which can be settled via doped yb3 + 虽然铒离子在磷酸盐玻璃中具有较大的发射截面,但对波长为980nm泵浦光来说,其吸收截面较小,可用镱离子与之掺杂来补充这一不足。
The research work primarily concludes as follows : 1 . the steady rate equations are get under the analysis of four energy class of yb3 + , and the approximate resolution is carried out 研究工作主要包括: 1 、分析了镱离子工作的四能级系统,在近似求解稳态速率方程组的基础上得出了光纤激光器输出功率的解析表达式,并且计算了解析解与数值解的偏差。
The temperature and strain sensing property of a grapefruit mof bragg grating with multi - reflection peaks has been experimentally studied . 2 . the preliminary numerical analysis and experiment of high - power yb3 + - doped double - cladding mof laser are carried out 2 、对高功率掺镱双包层微结构光纤激光器的输出特性进行了初步的理论和实验研究。
