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The static laser performance of a-growth Nd:GdVO4 crystal (a-cut, 4×4×25 (mm)) at 1.34μm pumped by flash-lamp is investigated with different transmissions of output couplers. With the output coupler transmission of T = 30%, the static output energy of 148 mJ is obtained when the pump energy is 35.2 J, and the corresponding electric-optical conversion efficiency is 0.42%. The Q-switched output of lasers with the output wavelength ranging from 1.3 to 1.6μm can be realized by using Co2 :LaMgAl11O19 (Co:LMA) as saturable absorber. A flash-lamp-pumped, passively Q-switched Nd:GdVO4 laser with Co:LMA as saturable absorber is demonstrated in plano-concave laser cavity. With the cavity length of 16.3 cm and pump energy of 19.8 J, the single-pulse output energy, pulse width, and peak power are obtained to be 4 mJ, 80 ns, and 5×104 W, respectively. 相似文献
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新型激光自倍频晶体Cr:Nd:GdCa4O(BO3)3 总被引:1,自引:0,他引:1
首次利用提拉法生长了优质铬离子敏化激光自倍频晶体Cr:Nd:GdCa4O(BO3)3(Cr:Nd:GdCOB),发现当铬离子和钕离子双掺时,由于协同效应使铬离子容易进入GdCOB晶体中,测量了Cr:Nd:GdCOB和Nd:GdCOB晶体的室温透过谱和荧光谱.Cr:Nd:GdCOB晶体在蓝紫外区比Nd:GdCOB晶体具有更强的吸收,适合于利用闪光灯泵浦.利用闪光灯泵浦分别对长度为7mm,沿最佳倍频方向(θ=66.8°,φ=132.6°)切割的Cr:Nd:GdCOB和Nd:GdCOB晶体进行自倍频实验.Cr:Nd:GdCOB的激发阈值为0.9J,而Nd:GdCOB的激发阈值为1.0J.在10J的输入能量时,Cr:Nd:GdCOB输出绿光能量为2.46mJ,而Nd:GdCOB输出绿光能量为1.96mJ,说明在该晶体中,铬离子对钕离子有很好的敏化作用. 相似文献
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双棒串接Nd3+:YAG激光器 总被引:4,自引:2,他引:2
根据测量的单根Nd3+:YAG棒的热焦距,利用ABCD传输矩阵计算了双棒串接的几种腔型的稳定参量,给出了能够满足高功率、高稳定性激光输出的稳定腔型,实验结果与理论分析基本相符. 相似文献