共查询到20条相似文献,搜索用时 31 毫秒
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We report cw diode-pumped cryogenic Tm:Ho:YLF amplifiers at 2.049μm with a Tm:Ho:GdVO4 oscillator. Not only the single- and double-pass, but also the single- and double-end pump amplifiers with a 10-mm-length medium are compared. A measured maximum small-gain coetfficient of 1.3 cm^-1 is achieved for the double-pass and double-end pump amplifier. The maximum extracted power of 8.5 W, the gain of 3.2 and extracted etfficiency of 32% have been obtained with an input signal power of 3.9 W. The difference of the hosts in the oscillator and amplifier has little influence on the characteristic of the amplifier output. Additionally, the extracted etfficiency of the quasi-continuous-wave amplifier with a repetition rate of 10kHz is the same as the cw one. 相似文献
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Nonvolatile photorefractive properties in triply doped stoichiometric Mg:Fe:Mn:LiTa03 crystalsNonvolatile photorefractive properties in triply doped stoichiometric Mg:Fe:Mn:LiTa03 crystalsNonvolatile photorefractive properties in triply doped stoichiometric Mg:Fe:Mn:LiTa03 crystals 下载免费PDF全文
We have grown triply doped Mg:Fe:Mn:LiTaO3 crystals with near stoichiometry using the top seeded solution growth technique. The defect structure was investigated by infrared absorption spectra and Curie tempeI'ature. Using a blue laser as the source, excellent photorefractive properties were obtained. Nonvolatile holographic storage properties were investigated using the dual wavelength technique. We got a very high fixed diffraction efficiency and nonvolatile holographic storage sensitivity. The blue light has more than enough energy to excite holes of deep (Mn) and shallow (Fe) trap centers with the same phase, which enhance dramatically the blue photorefractive properties and the nonvolatile holographic storage. Mg2+ ion is no longer damage resistant at blue laser, but enhances photorefractive characteristics. 相似文献
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Nd:Mg:LiNbO3单晶光学特性的初步研究 总被引:3,自引:1,他引:2
本文对Nd:Mg:LiNbO_3单晶的透射光谱、光学均匀性、抗光折变特性、倍频与自倍频特性进行了初步研究.报道了染料激光泵浦的Nd:Mg:LiNbO_3自信频激光实验,实现了非临界位相匹配下的自倍频运转,获得了波长为542.2nm的二次谐波输出. 相似文献
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Ce:Mn:LiNbO3晶体的二波耦合指数增益系数随晶片厚度减小而急剧增大。增大泵浦光束直径。可使指数增益的2θ角度响应拓宽。温度升高时,拽数增益随之增大,且在55℃,71℃和110℃附近出现异常峰,本文对上述现象进行了分析研究。 相似文献
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减小Ce:Fe:LiNbO3晶片的厚度,扩大泵浦光束直径,时由光爬行应晶体产生衍射自增强。单光束辐照Ce:Fe:LiNbO3晶体时,出现变偏振现象等各向异性自衍射。本文对上述现象的形成机理进行了探讨。 相似文献
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闪光灯抽运的Nd:KGW和Nd:YAG激光器的性能比较 总被引:1,自引:0,他引:1
用重复频率1Hz、脉冲宽度120μs的闪光灯仙面抽运,在相同的实验条件下,对比了Nd:KGW晶体与Nd:YAG晶体的激光性能。在自由运转时,分别获得1.0%和0.44%的斜率效率和0.54J、0.76J的外推阈值能量,获得的最大输出能量为384mJ和165mJ。调Q运转时,Nd:KGW激光器与Nd:YAG激光器的斜率效率分别是0.16%和0.07%,阈值能量为5.9J与12.5J。 相似文献
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Zn:Fe:LiNbO3晶体四波混频效应的研究 总被引:2,自引:1,他引:1
报道了一种新掺杂铌酸锂晶体Ze;Fe:LiNbO3,它具有优良的光折变四波混频性能,位相共轭反射率可达100%。且与Fe;LiNbO3相比、抗光散射能力强,响应速度快。本文通过对高掺ZnO后晶体的抗 光损伤能力和光电导值的测试分析,讨论了Zn;Fe:LiNbO3晶体抗光散射和速度提高的机理。 相似文献
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Ce:Fe:LiNbO3晶体的全息存储和相位共轭特性的研究 总被引:6,自引:1,他引:5
本文用提拉法从熔体中生长了Ce:Fe:LiNbO_3晶体,并采用二波混合和简并四波混合方法研究和测试了晶体的全息衍射效率和相位共轭反射率.以Ce:Fe:LiNbO_3晶体作为存储元件和相位共轭镜,实现了光学实时全息关联存储. 相似文献
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报道外延生长的多激活中心掺杂的红色单晶荧光体Eu^3+:Sm^3+:Cr^3+:YAG,其直径达到54mm,荧光色坐标为x=0.6137,y=0.3738,相当于波长λ=599mm的红色荧光,具有较高的色饱和度。这种单晶材料具有委好的抗电子束灼伤能力,在入射能量达到10^5W/m^2时无发光猝灭现象,是一种较理想的红色单晶荧光材料。 相似文献