Performance of the Self—Q—Switched Cr,Yb：YAG Laser

We report on the spectral properties of Cr,Yb:YAG crystal co-doped with 0.025 at.% Cr and 10 at.% Yb are reported.Using a continuous wave Ti:sapphire laser as a pumping source,we have demonstrated the self-Q-switched Cr,Yb:YAG laser at room temperature.We obtained an average output power as much as 75mW at 1.03μm with a pulse width (FWHM)as short as 0.4μs.The laser experiment demonstrated that the Cr,Yb:YAG crystal exactly combines the Cr^4 saturable absorber and Yb^3 gain medium.The Cr,Yb:YAG crystal can be a most promising self-Q-switched laser crystal for compact and efficient solid-state lasers.     

开关布局中本质不同的开关线路计算

通过对开关布局问题的研究，来解决一类象开关线路一样比较特殊，比较复杂的布局优化问题。从而寻找出这类问题的全局优化算法。本应用对称群对集合的作用，轨道，不动点等讨论了开关布局问题，给出了本质不同的开关线路个数的计算公式。     

小型高压冷阴极触发管性能分析

触发管作为一种高压开关，基于其导通时间短，可承受数千安培脉冲电流等特点被广泛应用于触发器、快脉冲产生器及大电流脉冲发生器中。随着系统精良小型化的发展需求，相应对触发管导通时间、脉冲电流和导通时间晃动等参数也提出了更高的要求。     

Antiphase State in Passively Q-Switched Yb：YAG Microchip Lasers with a Nd,Cr：YAG as Saturable Absorber

We experimentally investigate the antiphase dynamics phenomenon that occurs in a diode-pumped passively Q-switched Yb:YAG multimode laser with a Nd,Cr:YAG saturable absorber. Due to the effect of spatial hole burning, the multimode lasers with one, two, or three modes at different pump power are observed, and the pulses sequences display classic antiphase dynamics.     

FI代数的滤子

研究FI代数的滤子理论，建立F滤子、P滤子、Q滤子、C滤子之间的联系．     

An Electro—Optical Modulator Based on GeO2—Doped Silica Ridge Waveguides with Thermal Poling

A Mach-Zehnder electro-optic modulator is designed and fabricated based on upper-clad GeO2-doped silica ridge waveguides with thermal poling.The electro-optic coefficient obtained is about 0.05pm/V and is polarizationinsensitive.An extinction ratio of over 17dB is achieved.The transmission loss of the modulator for the TE mode is 2-3dB higher than that for the TM mode after the poling.     

毛细管放电X光激光装置中的预脉冲电源

 针对目前毛细管放电X 光激光装置产生的预脉冲电流幅值过大、持续时间较短的问题，提出了增加预脉冲开关抑制原有预脉冲，再外加由脉冲成形网络组成的预脉冲发生器，产生所需预脉冲的改造方案。可在主脉冲来临之前产生幅度10~50A，持续时间约17μs的方波预脉冲电流，来满足毛细管放电泵浦类氖氩X光激光实验的需要。     

白炽灯延寿节电开关

运用交流电路中线圈的自感特性，制成一种白炽灯的延寿节电开关，它可消除白炽灯起动瞬间的浪涌电流，延长白炽灯寿命，节约用电。     

深能级杂质对光导半导体开关非线性特性的影响

建立了非线性GaAs光导开关深能级杂质瞬态模型的基本方程,获得了与实验现象定性吻合的电流输出,给出了平均载流子随时间演化的情况.分析结果表明,在考虑了深能级杂质的俘获、发射和碰撞电离后,有可能对非线性光导开关中发生的一系列现象做出解释,进一步的仔细分析将对非线性光导开关的设计和制作提供理论指导.     

Cr^4＋：YAG可饱和吸收特性测量

测量了Cr4+:YAG材料的可饱和吸收特性,用多种数据分析方法处理了实验结果,Cr4+:YAG的基态吸收截面σgs=11×10-19cm2,激发态吸收截面σes=1.2×10-19cm2。