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激光二极管泵浦高效Nd:YVO4/KTP腔内倍频激光器 总被引:3,自引:0,他引:3
报道了激光二极管泵浦的高转换效率Nd:YVO4/KTP腔内倍频激光器,研究了泵浦光斑尺寸,谐振腔长,KTP及Nd:YVO4的温度对输出绿光效率的影响。在输出泵浦功率为669mW时,获得绿光输出功率154mW,光-光转换效率达23%。 相似文献
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激光二极管泵浦的Nd:YVO4单频绿光激光器 总被引:1,自引:0,他引:1
对激光二极管泵浦单频连续运行的Nd:YVO4腔内倍频激光器进行了理论和实验研究,通过精密调控Nd:YVO4,KTP及泵浦泵温度以达到有关参数的最佳匹配,从而获得了较稳定的单横模,单纵模,单偏振的绿光输出,实测最大单频录光功率为7.5mW,此时会聚磁浦光功率约为430mW,已超过阈值泵浦功率13倍以上。 相似文献
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报道一种LD端面泵浦Nd:YVO4晶体,LBO腔内倍频的全固态连续波绿光激光器,对LBO采用I类非临界相位匹配,温度调谐,当泵光功率为6.2W时,获得了1.3W TEM00模532mm连续波绿光输出,光-光转换效率达21%,电一光转换效率达3%。 相似文献
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激光二极管直接耦合泵浦的高效率Nd:YVO4/KTP腔内倍频激光器 总被引:4,自引:0,他引:4
使激光二极管的发光光面紧贴Nd:YVO4激光晶体,“面对面”直接耦合泵浦,采用KTP晶体腔内倍频,在503mW的泵浦功率下,获得532nm基横模绿光输出约73mW,光光总体转换效率为14.5%。 相似文献
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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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利用外腔谐振倍频获得高效倍频绿光 总被引:3,自引:0,他引:3
用全固化单频Nd:YAG激光器输出的红外激光泵浦由分离元件组成的MgO:LiNbO3倍频腔。通过优化倍频腔的结构,在倍频腔的红外激光输入为440mW时,获得330mW单纵模绿光输出,倍频效率达75%。 相似文献
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大功率激光二极管抽运Nd:YVO4激光器的特性研究 总被引:7,自引:0,他引:7
通过对Nd:YVO4晶体吸收特性的研究,对激光输出功率、斜效率与抽运动率的关系进行了理论分析,发现Nd:YVO4激光器在磊功率激光二极管抽运的条件下,激光斜效率随抽运功率的增加而减小。实验表明,理论结果与实验符合得较好。选用2Nd^3+掺杂的原子数分数为0.5%、通光长度为5mm的Nd:YVO4晶体,在抽运功率5W左右时,输功率为3W左右的,获得了71.5%的激光斜效率。 相似文献
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H. F. Lin W. Z. Zhu F. B. Xiong H. X. Shen 《Applied physics. B, Lasers and optics》2013,111(3):453-456
An efficient and high polarized microchip green laser with dual Nd:YVO4 crystals is reported. The microchip includes a half-monolithic Nd:YVO4-KTP chip and a second Nd:YVO4 crystal. With two 1 W diode lasers pumped, the output power of TEM00 green laser is 430 mW, and the optical-to-optical conversion efficiency is nearly 21.5 %, when the c-axes of second Nd:YVO4 crystal rotated to 90° from the half-monolithic chip, the polarization ratio of output green laser is 130:1. This laser has the advantages of being simple and easily attainable at a low cost, and suitable for batch production. 相似文献
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A diode-laser-array single-end-pumped CW Nd:YVO4 laser,capable of producing maximum TEM00 mode output power of 15 W,has been demonstrated. At the incident pumping power of 24 W,the output power of 13.8 W was obtained,leading to an optical conversion efficiency of 57.5%,and the slope efficiency of 66.7%. It is shown that only with Nd:YVO4 crystals of low Nd3+ concentration,the laser can be operated efficiently under high pump power levels. 相似文献
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Thermal effect in crystals is the main obstacle blocking diode-pumped solid state laser to get high and stable output power. Diffusion bonding crystal has been demonstrated to be an effective method to relieve the thermal lensing theoretically based on the numerical heat analysis to the end-pumped anisotropic laser crystal. The temperature distributions in Nd:YVO4/YVO4 composite crystal and conventional crystal were analyzed and compared. The end-pumped Nd:YVO4/YVO4 composite crystal laser was designed and set up with z-cavity. The maximum output powers of 9.87 W at 1064 nm and 6.14 W at 532 nm were obtained at the incident pump power of 16.5 W. The highest optical-optical conversion efficiencies were up to 59.8% at 1064 nm and 37.2% at 532 nm respectively. 相似文献
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We present a novel grazing-incidence composite thin slab laser (CTSL) with an almost aberration-free gain medium. The laser consists of a 260-microm thin Nd:YVO4 plate that is diffusion bonded to an undoped YVO4 slab. The Nd:YVO4 plate is cooled at just one side, suppressing temperature gradients that would induce wave-front distortions in the laser field. The pump light of a noncollimated diode bar is directly coupled into the undoped YVO4 slab and guided by total internal reflection to the attached Nd:YVO4 plate. Since any pump-beam-shaping optics can be omitted, the laser is simple and compact. We obtained transverse multimode optical output powers of 14 and 9.3 W with M2 < or = 1.3. 相似文献
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LIU Junhai LU Junhua LI Guangming SHAO Zongshu JIANG Minhua 《Chinese Journal of Lasers》1999,8(5):385-388
1IntroduCtion~e-laserarrayendpumpedsolid-statelasersWthoutputpoWrgreaterthan1o-WareattractinggreatattentionowtngtothenumerousPotentialaPplicationsofsuch....[','].HoWever,progressinscalingendpumpedlaserstohighPOWershasbeengTeatlyhinderedbythermallensingandthermally-inducedfractureoflasercrystals.ExhibitingstrongthermallensingandhavingrelativelylDWfracturelidrit,theNdtYVOcrystalhasreceivedlitt1eattentioninthefieldofsingle-end-pumPedhigh-powerlasersinspiteofitssultabilityfordiode-1aser..d-… 相似文献
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激光二极管端面抽运的1342nmNd:YVO4激光器 总被引:1,自引:1,他引:0
报道了用高功率线列阵光纤耦合激光二极管端面抽运的1342nmDd:YVO4激光器,在13.30W输入抽运功率下,1342nm激光输出功率达到3.22W,斜效率为25.5%。输出功率不稳定度小于1%。 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:11,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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Chen W Wei Y Huang C Wang X Shen H Zhai S Xu S Li B Chen Z Zhang G 《Optics letters》2012,37(11):1968-1970
We demonstrated an efficient second-Stokes Raman laser emission at 1313 nm based on self-frequency stimulated Raman scattering from a diode-end-pumped actively Q-switched YVO(4)/Nd:YVO(4)/YVO(4) laser at 1064 nm for the first time, to the authors' knowledge. A double-end diffusion-bonded Nd:YVO(4) composite crystal was adopted for sufficiently improving the thermal lensing effect in the course of self-frequency stimulated Raman scattering operation. With an incident pump power of 14.6 W and a pulse repetition (PRR) of 40 kHz, a maximum average output power of 2.34 W was obtained, corresponding to an optical-to-optical conversion efficiency of 16%. Pulse width and peak power were 1.2 ns and 49 kW, respectively. 相似文献