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1.
We report an efficiency Nd:CNGG laser operating at 1061 and 1329 nm, respectively, direct pumped by a diode laser at 885 nm
for the first time to our knowledge. The maximum outputs of 4.5 and 2.9 W, at 1061 and 1329 nm, respectively, are obtained
in a 6-mm-thick 0.5 at % Nd:CNGG crystal with 13.5 W of absorbed pump power at 885 nm, leading to a high slope efficiency
with respect to the absorbed pump power of 32.2 and 22.1%. Under traditional pumping at 808 nm, the maximum outputs of 3.9
and 2.7 W, at 1061 and 1329 nm, respectively, are obtained with 15.4 W of absorbed pump power, corresponding to the slope
efficiency with respect to the absorbed pump power of 25.2 and 17.9%. 相似文献
2.
We report an efficient laser emission on the 1061 nm 4
F
3/2 to 4
I
11/2 transition in Nd:CNGG under the pump with diode laser at 885 nm. Continuous wave (CW) 5.4 W output power at 1061 nm is obtained
under 17.4 W of incident pump power; the slope efficiency with respect to the incident pump power was 36.2%. Moreover, intracavity
frequency doubling with LiB3O5 (LBO) nonlinear crystal yielded 1.75 W of green light at 530.5 nm. An optical-to-optical efficiency with respect to the incident
pump power was 10.1%. 相似文献
3.
We report an efficient laser emission on the 1329 nm 4
F
3/2 to 4
I
13/2 transition in Nd:CNGG under the pump with diode laser at 885 nm. Continuous wave (CW) 3.37 W output power at 1329 nm is obtained
under 17.4 W of incident pump power; the slope efficiency with respect to the incident pump power was 36.2%. Moreover, intracavity
frequency doubling with LiB3O5 (LBO) nonlinear crystal yielded 822 mW of red light at 665 nm. An optical-to-optical efficiency with respect to the incident
pump power was 4.7%. 相似文献
4.
Jing Zhang 《Optik》2014
We report a laser architecture to obtain continuous-wave (cw) blue radiation at 462 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:CNGG crystal emitting at 935 nm. Intracavity sum-frequency mixing at 914 and 935 nm was then realized in a LiB3O5 (LBO) crystal to reach the blue radiation. We obtained a continuous-wave output power of 892 mW at 462 nm with a pump laser diode emitting 18.4 W at 808 nm. 相似文献
5.
A Nd:CNGG laser operated at 935 nm and 1061 nm pumped at 885 nm and 808 nm, respectively, is demonstrated. The 885 nm direct pumping scheme shows some advantages over the 808 nm traditional pumping scheme. It includes higher slope efficiency, lower threshold, and better beam quality at high output power. With the direct pumping, the slope efficiency increases by 43% and the threshold decreases by 10% compared with traditional pumping in the Nd:CNGG laser operated at 935 nm. When the Nd:CNGG laser operates at 1061 nm, the direct pumping increases the slope efficiency by 14% with a 20% reduction in the oscillation threshold. 相似文献
6.
7.
A continuous-wave high-power Nd:YAG laser operating on the 4F3/2→4I9/2 transition at 946 nm and intracavity frequency-doubled to 473 nm by a KNbO3 nonlinear crystal at room temperature is reported. The Nd:YAG laser outputs a randomly polarized beam of 3.8 W maximum power (38% optical-to-optical efficiency and 44% slope efficiency with respect to the absorbed pump power) at the 946 nm fundamental wavelength. Intracavity frequency-doubling with a 2.0-mm thick KNbO3 crystal in a linear resonator yielded 159-mW single-ended blue-output with 4.8% optical-to-optical conversion efficiency versus the absorbed pump power. The 473-nm maximum power of 418 mW with 11.6% optical-to-optical conversion efficiency in absorbed power was obtained from a V-type resonator; the overall optical-to-optical conversion efficiency was 6.7%, while the conversion of the available infrared power reached 50%. 相似文献
8.
We report a high-power continuous-wave(cw) diode-pumped efficient 1.34 μm Nd:YVO4 laser. The laser properties of a low Nd3+-doped concentration of the Nd:YVO4 crystal operating at 1.34 μm formed with a simple plane-concave cavity have been demonstrated. With the incident pump power of 22 W, an output power of 8.24 W was obtained, giving an optical conversion efficiency of 37.5% and slope efficiency of 40%. The thermal effects of cw end-pumped solid-state lasers were studied. 相似文献
9.
P. C. Hu J. G. Yin C. C. Zhao J. Gong X. M. He L. H. Zhang X. Y. Liang Y. Hang 《Laser Physics》2011,21(10):1698-1703
Nd:(La, Sr)(Al, Ta)O3 (Nd:LSAT) crystal was grown by the Czochralski method. The absorption and fluorescence spectra of Nd:LSAT crystal at room
temperature were investigated. With a fiber-coupled diode laser as pump source, the continuous-wave (CW) laser action of Nd:LSAT
crystal was demonstrated. The result of diode-pumped laser operation of Nd:LSAT crystal single crystal is reported for what
is to our knowledge the first time. The maximum output power at 1064 nm was obtained to be 165 mW under the incident pump
power of 3 W, with the slope efficiency 10.9%. 相似文献
10.
Ling Zhang Chunyong Li Dehua Li Pingxue Li Qiulin Zhang Zhiguo Zhang 《Optics & Laser Technology》2005,37(7):524-526
A design of diode-pumped high efficiency Nd:YVO4/LBO laser with a compact linear cavity was reported. Employing a type-II noncritical phase-matched LBO crystal, we generated 520 mW of 671 nm in single transverse mode at 6 W of incident pump power, the optical conversion efficiency being 8.7%. 相似文献
11.
12.
Hongrui Zhang Mingju Chao Mingyi Gao Liwen Zhang Jianquan Yao 《Optics & Laser Technology》2003,35(6):573-449
A fiber-coupled diode-single-end-pumped Nd:YVO4 laser with an Nd:YVO4 crystal of 0.3 at% doping concentration and 3×3×10 mm3 dimensions was reported. 14.850 W of continuous-wave output power in an M2 factor of 1.12 was obtained under pump power of 27.365 W, with an optical conversion efficiency of 60.49%, and a slope efficiency of 64.5%. 相似文献
13.
We report for the first time a continuous-wave (CW) blue-green laser emission by sum-frequency mixing in Nd:CNGG crystal.
Using type-I critical phase-matching LBO crystal, a blue-green laser at 497 nm is obtained by 1061 and 935 nm intracavity
sum-frequency mixing. The maximum laser output power of 232 mW is obtained when an incident pump laser of 18.2 W is used.
At the output power level of 232 mW, the output stability is better than 3.67%. The beam quality M
2 value is are about 1.26 and 1.38 in both horizontal and vertical dimensions respectively. 相似文献
14.
The quasi-three-level 908-nm continuous-wave laser emission under direct diode laser pumping at 880 nm into emitting level
4
F
3/2 of Nd:YLF have been demonstrated. An end-pumped Nd:YLF crystal yielded 4.7 W of output power for 11.8 W of absorbed pump
power. The slope efficiency with respect to the absorbed pump power was 43.3%. Comparative results obtained for the pump with
diode laser at 808 nm, into the highly-absorbing 4
F
5/2 level, are given in order to prove the advantages of the 880-nm wavelength pumping. 相似文献
15.
J. Kong D. Y. Tang S. P. Ng L. M. Zhao L. J. Qin X. L. Meng 《Optics & Laser Technology》2005,37(1):7407-54
We report on a high-power diode-end-pumped CW Nd:GdVO4 laser. Under the pump power of 39.5 W, a maximum output power of 19.8 W and a slope efficiency of 58.5% were obtained. The beam quality M2 at maximum output power was measured to be around 2.62. The thermal focal length in Nd:GdVO4 crystal under the pump power from 22 to 40.6 W was measured. The pump-induced damage threshold was estimated to be 28.6 kW/cm2. 相似文献
16.
17.
报道了一种适合中小功率输出的全固态激光器的角抽运方法, 抽运光从板条激光器中板条晶体的角部入射, 可获得较高的抽运效率和较好的抽运均匀性.采用单角抽运方式, 首次进行了角抽运Nd:YAG复合板条946 nm连续运转激光器的实验研究. 激光腔采用紧凑型平凹直腔结构, 腔长仅为20 mm. 当注入抽运功率为50 W时, 946 nm激光连续输出功率最高达5.29 W, 光光转换效率为10.6%, 斜效率为12%. 整台激光器结构紧凑, 调谐简单, 成本低, 具有广阔的应用前景.
关键词:
角抽运
Nd:YAG晶体
连续波
946 nm激光 相似文献
18.
A fiber-coupled diode-array-pumped, intracavity frequency doubled by a LBO crystal, high-power Nd:YVO4 red laser at 671 nm has been developed in this paper. With incident pump power of 10.6 W, employing a type-I critical phase-matched LBO crystal, 2.23 W single-transverse-mode red light at 671 nm was obtained, with optical-to-optical conversion efficiency up to 21.0%. 相似文献
19.
A high-efficiency Nd:GdVO4 bounce laser in-band pumped at 879 nm is demonstrated for the first time. From a side-pumped Nd:GdVO4 crystal, 8.2 W output was obtained with 18.5 W absorbed pump power. Corresponding slope efficiency with respect to the absorbed
pump power was 51.4%, and the beam quality factor M2 is 1.13 and 1.15 for tangential direction and sagittal direction, respectively.
Effects of crystal’s doping concentration and temperature on laser power and conversion efficiency were also investigated. 相似文献
20.
Using 1064 nm CW Nd:YVO4 solid-state laser as a pump, 1-km phosphosilicate fiber and cascaded cavities with two pairs of fiber Bragg grating mirrors for 1239 and 1484 nm, we obtained a CW 800 mW/1484 nm Raman fiber laser (RFL) for an actual incident pump power of about 2 W (Nd:YVO4 power of 6.90 W). The conversion efficiency is as high as 40%. To the best of our knowledge, this is the highest conversion efficiency of RFL pumped by solid-state laser. The output power instability at 1484 nm in half an hour is less than 3%. In addition, the numerical simulations are also performed. Good agreement between the results of numerical simulation and the results of the experiment has been demonstrated. 相似文献