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1.
LD泵浦Nd:YAG/Cr:YAG腔外频率变换高功率紫外激光器 总被引:8,自引:4,他引:4
用KTP晶体对激光二极管端面泵浦的Nd:YAG晶体;Cr:YAG被动调Q产生的1064nm脉冲激光器进行腔外倍频,用BBO晶体四倍频产生266 nm紫外激光.用15 W的LD阵列;当LD泵浦功率为12 W的情况下;红外(1064 μm)调Q平均输出功率为2.2 W;脉冲序列周期为40 μs;脉宽为18ns;峰值功率高达4.9kW.采用KTP腔外二倍频;532nm的绿光输出平均功率为850mW;用BBO腔外四倍频;266nm的紫外光输出平均功率高达215mW,绿光-紫外光光转换效率为25.2%, 红外到紫外总的转换效率为9.8%. 相似文献
2.
用KTP晶体对激光二极管端面泵浦的Nd∶YAG晶体,Cr∶YAG被动调Q产生的1064 nm脉冲激光器进行腔外倍频,用BBO晶体四倍频产生266 nm紫外激光.用15 W的LD阵列,当LD泵浦功率为12 W的情况下,红外(1064μm)调Q平均输出功率为2.2 W,脉冲序列周期为40μs,脉宽为18 ns,峰值功率高达4.9 kW.采用KTP腔外二倍频,532 nm的绿光输出平均功率为850 mW;用BBO腔外四倍频,266 nm的紫外光输出平均功率高达215 mW,绿光-紫外光光转换效率为25.2%,红外到紫外总的转换效率为9.8%. 相似文献
3.
报道了一种LD端面抽运Nd:YAG陶瓷、KTP腔内倍频的全固态连续波绿光激光器.当抽运功率为21.6 W时,1064 nm基频输出达到11.3 W,光—光转换效率为52.3%.采用Ⅱ类切割的KTP晶体作为腔内倍频介质,在直腔结构下获得了最大功率为1.86 W的532 nm绿光输出,光—光转换效率为7%.输出光斑具有高斯型强度分布,1 W输出时的M2因子约为1.7.
关键词:
全固态绿光激光器
Nd:YAG陶瓷
KTP倍频
直腔 相似文献
4.
报道了一种利用激光二极管(LD)端面泵浦Nd:YVO4晶体,声光调Q,LBO临界相位匹配腔内倍频的高效率、小体积、风冷绿光激光器。分析了不同偏振光泵浦的情况下,激光晶体对泵浦光的吸收特性。由分析得出,采用部分偏振光泵浦,可以提高激光晶体对泵浦光吸收均匀性,改善基波畸变,获得高转换效率激光输出。实验中,在泵浦光功率为33 W、声光调Q重复频率为20 kHz时,得到脉宽为23.96 ns、平均功率为15 W的1064 nm基频光输出。经倍频后,得到平均功率为11.2 W的绿光输出,倍频效率为74.6%,总体光-光转换效率为34%。在输出功率为10 W时,测得1 h内输出功率不稳定度为0.512 2%,水平方向和竖直方向的光束质量因子M2分别为1.2和1.1。 相似文献
5.
利用Nd∶YAG/Cr∶YAG/YAG键合晶体,建立了具有高平均输出功率的LD侧面泵浦被动调Q激光器系统.当Cr∶YAG的初始透过率为85%、最大泵浦光功率为187.5 W时,1 064nm激光的平均输出功率为83.68W.通过KTP晶体进行倍频,在最大泵浦光功率下,产生了27.2W532nm绿光激光脉冲,同时脉冲宽度和重复频率分别为210ns和21.2kHz;绿光单脉冲能量和峰值功率分别为1.28mJ和6.1kW;泵浦光(808nm)到倍频光(532nm)的光-光效率为14.5%. 相似文献
6.
《中国光学与应用光学文摘》2004,(4)
用磷酸氧铁钾(KTP)作为倍频晶体,对Nd,YAG声光调Q激光的环形腔外腔倍频技术进行了实验和理论的研究,利用最大平均功率sow、声光调Q、输出频率1005 Hz、灯抽运Nd,YAG激光器作为基频光光源,在基频输人功率35W时,获得了大约为31.4%的光一光转换效率的绿光输出。从实验结果分析了环形腔倍频的特性,指出了该方法 相似文献
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报道了一台激光二极管(LD)端面抽运Nd:YVO4晶体腔内倍频和腔外和频相结合的声光调Q准连续355 nm 紫外激光器。采用LD端面抽运双侧翼键合YVO4基质的Nd:YVO4晶体,在腔内置入Ⅰ类相位匹配的LiB3O5(LBO)晶体进行倍频实现1 064 nm和532 nm双波长准连续激光输出,通过消色差透镜将双波长激光聚焦耦合到Ⅱ类相位匹配的LBO 晶体中进行和频,并采用双向和频光路,获得了高效率、高光束质量、高重复频率的准连续355 nm 紫外激光输出。在抽运功率为28.6 W、重复频率为20 kHz时,355 nm激光最大输出功率4.2 W,脉宽为20.6 ns,光-光转换效率为14.7%,激光器光束质量因子Mx2和My2分别为1.29和1.23。 相似文献
9.
LD泵浦的Nd:YAG调Q激光器腔内倍频研究 总被引:1,自引:0,他引:1
DPL的调Q倍频是获得高重复率绿光输出的有效方法,本文研究了这种激光器的动态特性,提出存在使转换效率最高的最佳非线性耦合系数,它是调Q时反转粒子数超阈值倍数的函数.实验用国产200mWR的MQW—LDA泵浦Nd:YAG激光器,声光调Q,KTP腔内倍频,输出0.4μJ的倍频光,脉宽70ns,峰功率6W. 相似文献
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We reported an efficient laser-diode (LD) end-pumped CW dual-wavelength Nd:YAG crystal laser operating at 1074 and 1112 nm simultaneously, for the first time to our knowledge. The maximum output power was 3.15 W with an optical conversion efficiency of 23.6%. Considering the broad absorption of carbonylhemoglobin and hemoglobin located at about 538 and 555 nm, respectively, we proposed that this dual-wavelength laser is an important source for detecting carbon monoxide poisoning by simple frequency doubling. 相似文献
12.
We reported on an all-solid-state double Nd:YAG slab laser. The laser was based on two diode end-pumped Nd:YAG slabs and a stable-unstable hybrid resonator. A cw output of 189 W and an average Q-switched output of 169 W at 10 kHz with an M(2) factor of 1.5 in the slow direction and 1.7 in the fast direction were obtained. We demonstrated efficient near-field frequency doubling by imaging the one-dimensional top-hat near-field to a lithium triborate frequency doubler. We obtained 93 W green light at 10 kHz with a pulse width of 10.7 ns. The efficiency of second-harmonic generation was up to 57%. 相似文献
13.
Maik Frede Dietmar Kracht Martin Engelbrecht Carsten Fallnich 《Optics & Laser Technology》2006,38(3):183-185
We present a compact diode- and end-pumped Nd:YAG laser for material processing with an output power of 238 W, an optical-to-optical efficiency of 48% and a slope efficiency of 60%. This is to the best of our knowledge the highest optical efficiency for a high-power end-pumped Nd:YAG laser. 相似文献
14.
We describe the output performance of the 1415 nm emission in Nd:YAG in a plane-concave cavity under traditional pumping into the 4F5/2 level (808 nm) and direct in-band pumping into the 4F3/2 level (885 nm). An end-pumped Nd:YAG laser yielded maximum cw output power of 6.3 W and 4.2 W at 885 nm and 808 nm laser diode (LD) pumping, respectively. To the best of our knowledge, this is the highest output power of a LD-pumped 1415 nm laser. 相似文献
15.
We present a compact and high output power diode end-pumped Nd:YAG laser which operates at the wavelength of 1123 nm. Continuous wave (CW) laser output of 2.6 W was achieved at the incident pump power of 15.9 W, indicating an overall optical-optical conversion efficiency of 16.4%, and the slope efficiency was 18%. 相似文献
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Y.X. Fan Y.E. Hou Y. Liu Q. Xu H.T. Wang J.L. He 《Applied physics. B, Lasers and optics》2007,86(3):443-445
We demonstrated a linearly polarized continuous-wave Nd:YAG laser operating at a 1357-nm single-wavelength, by a 808-nm diode
as an end-pump source. We chose a Brewster-angle-cut Nd:YAG laser host crystal, due to its two salient features as follow:
linearly polarized laser output and single-wavelength oscillation can be easily obtained. In this paper, a continuous-wave
all-solid-state single-wavelength laser operating at 1357 nm is demonstrated with a diode-end-pumped Brewster-cut Nd:YAG laser.
The laser had a 1.03-W maximum output power under an incident pump power of 15.0 W, a 12.7% slope efficiency, a 6.9% optical-to-optical
conversion efficiency, a 0.14-nm spectral linewidth and a 3% power-output stability within 30 min.
PACS 42.55.Rz; 42.55.Xi; 42.70.Hj 相似文献
18.
A fiber-coupled laser-diode (LD) end-pumped Nd:GdVO4 slab continuous-wave (CW) 912-nm laser and an LD bar end-pumped Nd:GdVO4 slab CW 912-nm laser are both demonstrated in this paper. Using the fiber-coupled LD of end-pumped type, a highest CW 912-nm laser output power of 10.17 W is obtained with a high optical-to-optical conversion efficiency of 24.6% and a slope efficiency of 34.5%. The measured M2 factors of beam quality in x and y directions are 5.3 and 5.1, respectively. Besides, an LD bar of end-pumped type is used to realize CW 912-nm laser output, which has the advantages of compactness and low cost. When the pump power is 38.8 W, the output power is 8.87 W and the measured M2 factors of beam quality in x and y directions are 16 and 1.31, respectively. In order to improve the beam quality of the 912-nm laser at x direction, a new quasi-concentric laser resonator will be designed, and an LD bar end-pumped Nd:GdVO4 slab high-power CW 912-nm TEM00 laser will be realized in the future. 相似文献