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报道了激光二极管抽运的Nd∶YVO4晶体1342和671nm激光特性.1342nm激光最大输出功率为175W,光光转换效率为321%,斜效率为43%.利用Ⅰ类非临界相位匹配LBO晶体腔内倍频,当输入抽运功率为6W时,获得功率为502mW的671nm激光输出,光光转换效率超过83%;当671nm激光输出功率为400mW时,短期的不稳定度小于2%. 相似文献
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平顶光端面抽运DPL中热效应对输出功率的影响 总被引:1,自引:0,他引:1
用平顶光束描述由多根光纤紧密排列耦合并经透镜整形后的抽运光分布,给出了平顶光束的光强分布,对晶体热效应引起的热致衍射损耗随抽运功率和抽运光束半径的变化规律进行了数值计算,讨论了晶体热效应引起的热致衍射损耗对基横模高斯光束输出功率的影响,并实验验证了基横模高斯光束输出功率随抽运功率的变化规律.结果表明:热致衍射损耗使基横模高斯光束输出功率明显降低.随着抽运光束半径的增大,热致衍射损耗减小,对基横模高斯光束输出功率的影响就减小;抽运功率越大,热致衍射损耗越大,对基横模高斯光束输出功率的影响就越大. 相似文献
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报道有一个3W激光二极管端面泵浦Nd:LMA激光器,实验采用三镜折迭像散补偿腔。在1054nm波长,激光器连续输出功率达620mW,斜率效率为50%,光-光转换效率20%,在1083nm波长处,激光器连续输出功率为64mW,斜率效率为6%,光转换效率2.1%。 相似文献
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激光二极管纵向抽运(Tm,Ho):YLF激光器的研究 总被引:2,自引:0,他引:2
对激光二极管端面抽运(Tm,Ho):YLF固体激光器的激光特性进行了研究。根据激光二极管抽运准三能级系统的特性,详尽地分析了能量在Tm^3 离子和Ho^3 离子之间的传递过程,给出了(Tm,Ho):YLF激光器准三能级的速率方程,对上转换及激光下能级粒子再吸收对激光二极管抽运(Tm,Ho):YLF激光器运转的影响进行了理论分析,得出了(Tm,Ho):YLF激光器的阈值抽运功率和斜率效率的解析表达式。同时对(Tm,Ho):YLF微片激光器的激光特性进行了实验研究,当保持晶体温度为19℃时,阈值抽运功率为425mW,斜率效率为22.5%,最大光—光转换效率为17.4%,并且在将晶体保持在四个不同的温度下,给出了激光输出功率随抽运功率变化的实验结果。将理论与实验结果进行比较,发现吻合得比较好。 相似文献
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输出功率大于13W的二极管抽运钒酸盐激光器光谱物理激光器公司(SPL)的工程师们研制出了光学转换效率为53%的二极管棒抽运Nd:YVO。激光器,这种激光器可产生13.SW的TEM。。输出功率。据SPL的先进Rho经理Bil!Ni@an声称,输出功率大... 相似文献
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We report a continuous-wave (CW) yellow laser emission by sum-frequency mixing in Nd:YVO4 crystal. Using type-II critical phase-matching KTP crystal, a yellow laser at 593.5 nm is obtained by 1064 and 1342 nm intracavity sum-frequency mixing. The maximum laser output power of 2.1 W is obtained when an incident pump laser of 18.2 W is used. At the output power level of 2.1 W, the output stability is better than 3.2%. 相似文献
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激光二极管端面抽运Nd:YVO4实现1386 nm连续波激光输出 总被引:16,自引:5,他引:11
在Nd:YVO4晶体的4F3/2-4I13/2跃迁带内,除了1342 nm激光辐射之外,其它的跃迁谱线由于小的受激发射截面和强的寄生振荡,很难形成激光振荡.通过调整谐振腔损耗,获得了光纤耦合激光二极管端面抽运1386 nmNd:YVO4激光器激光连续输出.在抽运功率达到4.24 W时,得到了305 mW的1386 nm激光连续输出,最高输出功率下的斜效率为13.9%.实验中还观察到了1342 nm和1386 nm的双波长运转.根据抽运阈值能量和实验数据,计算得到了Nd:YVO4晶体中1386 nm激光辐射处的受激发射截面大约为(3±1)×10-19cm2. 相似文献
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Liu YH Xie ZD Pan SD Lv XJ Yuan Y Hu XP Lu J Zhao LN Chen CD Zhao G Zhu SN 《Optics letters》2011,36(5):698-700
In this Letter, we demonstrate a nonlinear-mirror (NLM) mode-locked diode-pumped solid-state Nd:YVO4 laser operating at 1342?nm, in which the NLM comprises a periodically poled LiNbO3 crystal and a dichroic mirror. The self-starting threshold for cw mode locking is 1.5?W, which is significantly lower than that of saturable absorber mode locking. An average power of 1.52?W at 1342?nm is obtained under diode pump power of 10?W at 808?nm, with the slope efficiency being up to 16.8%. The pulse width and the repetition rate of the mode-locked laser output are about 9.5?ps and 101?MHz, respectively. 相似文献
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We report efficient generation of cw yellow light by use of single-pass sum-frequency mixing from a diode-pumped Nd:YVO(4) dual-wavelength laser with periodically poled lithium niobate. A diode-pumped Nd:YVO(4) dual-wavelength laser is implemented with a three-mirror cavity, and the optimum oscillation condition is obtained from theoretical analysis. We extracted 78 mW of power at 593 nm from 1.2 W at 1064 nm and from 1.0 W at 1342 nm in a beam with excellent quality. The output power could probably be increased to ~92 mW by antireflection coating of the crystal. 相似文献
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Chen YF 《Optics letters》2004,29(18):2172-2174
An efficient compact eye-safe laser at 1525 nm is presented by use of self-frequency Raman conversion in a diode-pumped actively Q-switched Nd:YVO4 1342-nm laser. At an incident pump power of 13.5 W, the self-stimulated Raman laser produces 1.2 W of 1525-nm average output power at a repetition rate of 20 kHz. The corresponding peak power at 1525 nm is generally greater than 10 kW for repetition rates from 5 to 20 kHz. 相似文献
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A low-loss semiconductor saturable absorber based on InAs/GaAs quantum dots was developed for Q switching of a diode-pumped Nd-doped laser operating at 1.3 microm. With an InAs/GaAs quantum-dot saturable absorber, a diode-pumped Nd:YVO4 laser at 1342 nm was achieved. With an incident pump power of 2.2 W, an average output power of 360 mW with a Q-switched pulse width of 90 ns at a pulse repetition rate of 770 kHz was obtained. 相似文献
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ZHANG Hengli HOU Wei FENG Baohua XU Zuyan WU Baichang CHEN Chuangtian 《Chinese Journal of Lasers》2000,9(1):30-33
A diode-pumped Nd3+:YVO4 emitting at 1342 nm and 671 nm was developed. Low concentration neodymium doped Nd:YVO4 shows excellent stability at 1342 nm. With a type-Ⅱ noncritical phase-matched LBO crystal as the intracavity frequency doubler, 890 mW of 671 nm light was obtained at 11.2 W incident pumping power, the optical-optical conversion efficiency is 7.9%. 相似文献
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A diode-pumped Nd3+:YVO4 emitting at 1342 nm and 671 nm was developed. Low concentration neodymium doped Nd:YVO4 shows excellent stability at 1342 nm. With a type-Ⅱ noncritical phase-matched LBO crystal as the intracavity frequency doubler, 890 mW of 671 nm light was obtained at 11.2 W incident pumping power, the optical-optical conversion efficiency is 7.9%. 相似文献