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1.
We demonstrate a 1047 nm Nd:LiYF4 (Nd:YLF) laser by directly pumping into the upper lasing level with a tunable Ti:Sapphire laser. The results obtained for direct upper laser level pumping at 863, 872 and 880 nm of Nd:YLF were compared with traditional 806 nm pump band excitation. Highly efficient 1047 nm continuous-wave (CW) laser emission under direct pumping at 880 nm in an 8 mm thick, 1.0 at.% Nd:YLF crystal is obtained. The slope efficiency is improved from 55.6% for traditional pumping at 806 nm to 76.3% for direct pumping at 880 nm. 相似文献
2.
We report on a passively Q-switched end pumped Nd:YLF laser including a noncritically phase-matched KTP singly resonant intracavity
optical parametric oscillator (IOPO-KTP). For the Q-switching operation we have used Cr:YAG saturable absorber. The optimized
passively Q-switched Nd:YLF laser without IOPO generated linearly polarized pulses of 11.5 ns and 1.07 mJ at 1047 nm. The
conversion efficiency of the optimized Q-switched pulse energy at 1047 nm to 1547 nm of a signal approached about 47%. For
optimizing both Nd:YLF laser and IOPO we have numerically solved a theoretical model. We have achieved 1.6-ns duration pulses
at 1547 nm with energy of 0.5 mJ and peak power of above 300 kW. The beam quality was excellent (M2 ≈1). 相似文献
3.
A dual-wavelength continuous-wave (CW) diode end-pumped Nd:YLiF4 (Nd:YLF) laser that generates simultaneous laser action at the wavelengths 1047 and 1321 nm is demonstrated. A total output
power of 350 mW for the dual-wavelength was achieved. Furthermore, intracavity sum-frequency mixing at 1047 and 1321 nm was
then realized in a LBO crystal to reach the yellow-green range. We obtained a total CW output power of 34 mW at 584 nm. 相似文献
4.
We report a laser architecture to obtain continuous-wave blue radiation at 488 nm. A 808 nm diodepumped the Nd:YVO4 crystal emitting at 914 nm. A part of the pump power was then absorbed by the Nd:YVO4 crystal. The remaining was used to pump the Nd:YLF crystal emitting at 1047 nm. Intracavity sum-frequency mixing at 914 and
1047 nm was then realized in a LBO crystal to reach the blue radiation. We obtained a continuous-wave output power of 514
mW at 488 nm with a pump laser diode emitting 19.6 W at 808 nm. 相似文献
5.
Y. B. Zhang Y. X. Zheng Y. H. Jia Y. Yao D. P. Qu Q. Zheng L. Zhao 《Laser Physics》2010,20(7):1580-1584
An efficient and compact green laser at 526 nm generated by intracavity frequency doubling of a continuous wave (CW) laser
operation of a diode pumped Nd:YLF laser at 1053 nm under the condition of suppression the high gain transition at 1047 nm.
With 19.5 W diode pump power and a frequency doubling crystal LBO, as high as 2.15 W of CW output power at 526 nm is achieved,
corresponding to an optical-to-optical conversion efficiency of 11.2% and the output power stability in 8 h is better than
2.87%. To the best of our knowledge, this it the highest watt-level laser at 526 nm generated by intracavity frequency doubling
of a diode pumped Nd:YLF laser at 1053 nm. 相似文献
6.
We present a laser architecture to obtain continuous-wave blue radiation at 488 nm. A 808 nm diode-pumped the Nd:YVO4 crystal emitting at 914 nm. A part of the pump power was then absorbed by the Nd:YVO4 crystal. The remaining was used to pump the Nd:YLiF4 (Nd:YLF) crystal emitting at 1047 nm. Intracavity sum-frequency mixing at 914 and 1047 nm was then realized in a BiB3O6 (BiBO) crystal to reach the blue radiation. We obtained a continuous-wave output power of 339 mW at 488 nm with a pump laser diode emitting 18.3 W at 808 nm. 相似文献
7.
Yan-Fei Lü Xi-He Zhang Jing Xia Chang-Li Li Zhen-Ming Zhao Zhi-Teng Liu 《Optics Communications》2010,283(15):3067-3069
We present a laser architecture to obtain continuous-wave blue radiation at 489 nm. An 809 nm diode-pumped the Nd:LuVO4 crystal emitting at 916 nm. A part of the pump power was then absorbed by the Nd:LuVO4 crystal. The remaining was used to pump the Nd:YLiF4 (Nd:YLF) crystal emitting at 1047 nm. Intracavity sum-frequency mixing at 916 and 1047 nm was then realized in a LiB3O5 (LBO) crystal to reach the blue radiation. We obtained a continuous-wave output power of 425 mW at 489 nm with a pump laser diode emitting 18.4 W at 809 nm. 相似文献
8.
9.
H. Y. Shen R. F. Wu Z. D. Zeng W. X. Lin R. R. Zeng Y. P. Zhou G. F. Yu C. H. Huang 《Chinese Journal of Lasers》2000,9(2):103-106
1 IntroductionNd: YLF crystal belongs tO the tetragonal syStem with space group 1 4/ a and it isa POSitive single axial crystal in optics. The life-time Of fluorescence of Nd3 ions incaF crystal is lOnger, being 520 us. Therefore, it is a strong candidate for lasermedium of high stored energy and CW lasers. Especially, the therrnai focal distance OfNd: YLF crystal is much longer than that of Nd: YAG crystal and' so the Nd: YLFcrystal is Particularly suitable for a laser in TEWo m… 相似文献
10.
H. Y. Shen R. F. Wu Z. D. Zeng W. X. Lin R. R. Zeng Y. P. Zhou G. F. Yu C. H. Huang 《中国光学快报(英文版)》2000,9(2)
A laser diode (LD) pumping high-stability 1047 nm TEM00 mode Nd: YLiF4 (Nd: YLF) continuous wave (CW) laser is reported in this letter. The laser output power of 5.83 W with optical to optical effidency of 27% and slope efficiency of 30% has been achieved The instability of output power is 0.36% and spike caused by relaxation oscillation has not been observed in the laser beam. The transverse cross section of laser beam is an ellipse, the diameters of laser beam at output mirror in both directions are 0.97 mm and 1.07 mm, respectively. The divergent angles are 0. 936 mrad and 0. 774 mrad, and the values of M2 are 1.37 and 1.24, respectively. The polarization degree of laser beam is better than 237:1. 相似文献
11.
V. V. Bezotosnyi M. V. Gorbunkov A. L. Koromyslov V. F. Pevtsov Yu. M. Popov V. G. Tunkin E. A. Cheshev 《Bulletin of the Lebedev Physics Institute》2017,44(1):1-4
A dual-wavelength generation at 1047 and 1053 nm is implemented in a diode-endpumped Nd:YLF laser Q-switched by Cr:YAG. This generation is obtained by the tuning of the cavity length near the regions of the transverse-mode degeneracy. 相似文献
12.
A low-threshold middle-infrared(mid-IR) MgO:PPLN optical parametric generation(OPG)pumped by a laser diode(LDl end-pumped Z-type Nd:YLF laser at 1047 nm is realized with high reflectivity(HR) mirror for signal.At repetition rate of 10 kHz,the OPG threshold of 50μJ has been achieved with HR mirror for signal.Compared with the threshold without mirror,the threshold decreases by 17%.Using HR mirror for pump at output side of crystal,the threshold of 40μJ is achieved.The 2.7-4.1μm continuous tunable output is produced with seven grating periods from 28.5 to 31.5μm and temperatures from 30 to 200℃.When the incident average pump power is 3 W.the OPG idler output power is 0.46 W at 3.26 μm,which corresponds to optical-to-optical conversion efficiency up to 15.3%. 相似文献
13.
A single-wall carbon nanotubes based saturable absorber wafer with absorption wavelength around 1047 nm was fabricated by
electric Arc discharge method and employed in a diode end-pumped Nd:YLF laser as saturable absorber. Passively continuous
wave mode-locking oscillation was achieved in the pump range form 6.7 to 8.0 W. The duration and repetition rate of the mode-locked
pulses were 10 ps and 59 MHz, respectively. The average output power was 280 mW. 相似文献
14.
S. Xu Y. Wei C.H. Huang W.D. Chen F.J. Zhuang L.X. Huang G. Zhang 《Optics Communications》2012,285(6):1387-1389
In this study, a compact and efficient Nd:YLF laser at 1053 nm has been reported without inserting optical intracavity element to suppress the stronger line of 1047 nm. According to theoretical analysis and calculation, the thermal focal length of 1047 nm is negative while that of 1053 nm is positive in plane-parallel resonator. Hence 1053 nm laser was stable in this cavity. In our experiment, 7.5 W laser output at σ-polarized 1053 nm has been obtained with optical–optical efficiency of 38.8%. As the pulse repetition rate is 20 kHz, the pulse width is 50 ns and the peak power is calculated to be 7.5 kW. 相似文献
15.
We report for the first time (to our knowledge) a 1053 nm Nd:LiYF4 (Nd:YLF) laser by directly pumping into the upper lasing level with a tunable Ti:sapphire laser. The results obtained for
direct upper laser level pumping at 872 and 880 nm of Nd:YLF were compared with traditional 806 nm pump band excitation. Highly
efficient 1053 nm continuous-wave (CW) laser emission under direct pumping at 880 nm in an 8 mm thick, 1.0 at % Nd:YLF crystal
is obtained. The slope efficiency is improved from 39.1% for traditional pumping at 806 nm to 63.9% for direct pumping at
880 nm. 相似文献
16.
We present for the first time a Nd:YAG laser emitting at 1064 nm intracavity pumped by a 946 nm diode-pumped Nd:YAG laser.
A 885 nm laser diode is used to pump the first Nd:YAG crystal emitting at 946 nm, and the second Nd:YAG laser emitting at
1064 nm intracavity pumped at 946 nm. We achieved an output power of 7.97 W at 1064 nm for an absorbed pump power at 946 nm
of 9.55 W, corresponding to an optical efficiency of 83.4%. The beam quality M2 quality factor is about 1.1 at the maximum output power. 相似文献
17.
C.Y. Li Y. Bo F. Yang Z.C. Wang B.S. Wang H.W. Gao D.F. Cui 《Optics Communications》2010,283(14):2885-2887
We demonstrate a high power continuous wave (CW) diode-side-pumped Nd:YAG laser operating at 1123 nm with a plano-plano configuration. By means of precise coating, a single 1123 nm wavelength is achieved. Under the pump power of 1080 W, an output power of 219.3 W is obtained, which corresponds to an optical-optical conversion efficiency of 20.3%. To the best of our knowledge, this is the highest output power for CW 1123 nm laser based on Nd:YAG crystal. 相似文献
18.
针对陶瓷晶体1319 nm的谱线设计了适合的谐振腔腔镜膜系参量,采用激光二极管列阵侧向抽运掺杂1.1at%、Φ3×50 mm的Nd:YAG陶瓷,利用色散棱镜及KTP晶体Ⅱ类匹配腔内倍频,研制了一台660 nm单一波长输出的高重频Nd:YAG陶瓷红光激光器.根据陶瓷晶体的热透镜焦距设计了谐振腔的各个参量,在重复频率为1000 Hz、单脉冲抽运能量约144 mJ时,获得了3.9 mJ的660 nm脉冲激光输出,总的光-光转换效率为2.71%.为进一步研究大功率、高效率的陶瓷红光激光器奠定了基础. 相似文献
19.
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