共查询到20条相似文献,搜索用时 31 毫秒
1.
J.-L. Xu H.-T. Huang J.-L. He J.-F. Yang B.-T. Zhang X.-Q. Yang F.-Q. Liu 《Applied physics. B, Lasers and optics》2011,103(1):75-82
The efficient dual-wavelength oscillation at 1064 and 1342 nm in the passively Q-switched laser based on Nd:YVO4/V3+:YAG is successfully obtained, as demonstrated in this paper. A total average output power of 2.2 W is obtained with 1.3 W
for 1064 nm and 0.9 W for 1342 nm under the incident pump power of 7.7 W, corresponding to a total optical-optical conversion
efficiency of 28.2%. The pulse widths are 58 and 54 ns for 1064 and 1342 nm, respectively, with the repetition rate of 89
kHz. Moreover, a rate equation model considering the Gaussian spatial distributions of the intracavity photon density and
the initial population-inversion density is presented to characterize the dual-wavelength passive Q-switching operation. 相似文献
2.
We report on a continuous-wave Nd:YVO4 oscillator at 1342 nm based on the combination of a grown-together composite crystal YVO4/Nd:YVO4/YVO4 and the 888 nm diode-laser direct pumping for the first time. At the absorbed pump power of 102 W, a maximum average output
power of 37.2 W at 1342 nm was obtained, corresponding to an optical-optical conversion efficiency of 36.5% and a high slope
efficiency of 63.0%, respectively. To the best of our knowledge, this is the highest output power ever obtained for a 1342
nm Nd:YVO4 oscillator. 相似文献
3.
We present for the first time a dual-wavelength laser operation at 1064 and 914 nm in two NdYVO4 crystals. A 879 nm laser diode is used to pump the first Nd:YVO4 crystal emitting at 914 nm, and the second Nd:YVO4 laser emitting at 1064 nm intracavity pumped at 914 nm. A total output power of 4.28 W at the two fundamental wavelengths
was achieved at the absorbed pump power of 13.8 W. The M2 values for 914 and 1064 nm lights at the maximum output power were found to be around 1.3 and 1.1, respectively. 相似文献
4.
G. C. Sun Y. D. Lee B. Z. Li X. Y. Chen M. Zhao J. B. Wang G. Y. Jin 《Laser Physics》2011,21(6):1024-1027
A dual-wavelength continuous-wave (CW) diode-pumped Nd:YVO4 laser that generates simultaneous laser action at the wavelengths 914 and 1342 nm is demonstrated. A total dual-wavelength
output power of 1.79 W was achieved at the incident pump power of 18.2 W. Furthermore, intracavity sum-frequency mixing at
914 and 1342 nm was then realized in a LBO crystal to reach the yellow-green range. We obtained a total CW output power of
212 mW at 544 nm. 相似文献
5.
A Nd:YVO4 crystal was pumped directly into the emitting level by a laser diode at 914 nm. We achieved an output power of 1.46 W at
1342 nm for an incident pump power of 18.3 W, corresponding to an optical-to-optical conversion efficiency of 8.0%. The fluctuation
of the output power was better than 2.3% in the given 30 min. The beam quality M2 factor value was equal to 1.15 at the maximum output power. 相似文献
6.
Y. J. Huang Y. P. Huang P. Y. Chiang H. C. Liang K. W. Su Y.-F. Chen 《Applied physics. B, Lasers and optics》2012,106(4):893-898
We report on an efficient high-power passively Q-switched UV laser at 355 nm. We take into account the second threshold criterion
and the thermal-lensing effect to design and realize a compact reliable passively Q-switched Nd:YVO4 laser with Cr4+:YAG as a saturable absorber. At an incident pump power of 16.3 W, the average output power at 1064 nm reaches 6.2 W with
a pulse width of 7 ns and a pulse repetition rate of 56 kHz. Employing the developed passively Q-switched laser to perform
the extra-cavity harmonic generations, the maximum average output powers at 532 nm and 355 nm are up to 2.2 W and 1.62 W,
respectively. 相似文献
7.
Y. L. Li 《Laser Physics》2011,21(11):1855-1858
We report an efficient laser emission on the 1064 nm 4
F
3/2 to 4
I
11/2 transition in mixed vanadate crystal Nd:Y0.36Gd0.64VO4 under the pump with diode laser at 880 nm. Continuous wave (CW) 10.7 W output power at 1064 nm is obtained under 17.8 W of
incident pump power; the slope efficiency with respect to the incident pump power was 71.2%. Moreover, intracavity frequency
doubling with LiB3O5 (LBO) nonlinear crystal yielded 4.6 W of green light at 532 nm. An optical-to-optical efficiency with respect to the incident
pump power was 25.8%. 相似文献
8.
We present for the first time a Nd:YVO4 laser emitting at 1064 nm intracavity pumped by a 916 nm diode-pumped Nd:LuVO4 laser. A 809 nm laser diode is used to pump the Nd:LuVO4 crystal emitting at 916 nm, a Nd:YVO4 laser crystal was pumped at 916 nm and lased at 1064 nm. Intracavity sum-frequency mixing at 916 and 1064 nm was then realized
in a LiB3O6 (LBO) crystal to reach the blue range. We obtained a continuous-wave output power of 216 mW at 492 nm under 19.6 W of incident
pump power at 809 nm. 相似文献
9.
We report a continuous-wave (CW) coherent green radiation at 532 nm by intracavity frequency doubling generation of 1064 nm
Nd:Gd0.18Y0.82VO4 laser. With incident pump power of 18.2 W, output power of 1.08 W at 532 nm has been obtained using a 5 mm-long KTP crystal.
The optical conversion efficiency was up to 5.9%. At the output power level of 1.08 W, the output stability is better than
5%. The beam quality M2 values were equal to 1.26 and 1.12 in X and Y directions, respectively. 相似文献
10.
B. Z. Li C. G. Sun A. F. Zang X. H. Zhang M. Zhao X. Y. Chen J. B. Wang G. B. Chen 《Laser Physics》2011,21(5):891-893
A dual-wavelength continuous-wave (CW) diode end-pumped Nd3+:YAlO3 (Nd:YAP) laser that generates simultaneous laser action at the wavelengths 1064 and 930 nm is demonstrated. A total output
power of 2.15 W (1.57 W at 1064 nm and 0.58 W at 930 nm) for the dual-wavelength was achieved at the incident pump power of
17.8 W with optical conversion efficiency of 12.1%. The M
2 values for 930 and 1064 nm lights were found to be around 1.21 and 1.32, respectively. 相似文献
11.
Yikun Bu Quan Zheng Qinghua Xue Yingxin Cheng Longsheng Qian 《Optics & Laser Technology》2006,38(8):565-568
A design of LD-pumped Nd:YVO4 laser that generates simultaneous laser action at wavelengths 1064 and 1342 nm by optimizing film design is presented. An optimized continuous-wave (cw) yellow laser at 593.5 nm in room temperature is obtained for the first time. Using type-I critical phase-matching (CPM)LBO 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 85 mW is obtained when an incident pump laser of 1.8 W is used. The optical-to-optical conversion is up to 4.7%, and the power stability in 24 h is better than ±2.8%. 相似文献
12.
P. F. Zhu B. Li W. Q. Liu T. H. Liu C. X. Fang Y. Zhano Y. Yao Q. Zheng 《Optics and Spectroscopy》2013,114(1):151-155
A compact and efficient 593.5 nm orange-yellow laser is realized using doubly resonant intracavity sum frequency mixing. Two Nd: YVO4 crystals are employed as the gain crystals. In two sub-cavities, 1064 nm radiation from one Nd: YVO4 and 1342 nm radiation from the other Nd: YVO4 are mixed to generate 593.5 nm orange-yellow laser. In the overlapping of the two cavities, sum frequency mixing is achieved in a type I critical phase matching (CPM) LBO crystal. An output power of 3.2 W at the wavelength of 593.5 nm is obtained with total incident pump power of 38 W. The optical to optical conversion efficiency is up to 8.4% and the stability of the output power is better than 2.48% in 8 h. To the best knowledge, this it the highest watt-level laser at 593.5 nm generated by diode end pump all-solid-state technology. 相似文献
13.
We report a red laser at 671 nm generation by intracavity frequency doubling of a continuous wave (cw) laser operation of
a 1342 nm Nd:Y0.36Gd0.64VO4 laser under diode pumping into the emitting level 4
F
3/2. An GdCa4O(BO3)3 (GdCOB) crystal, cut for critical type I phase matching at room temperature is used for second harmonic generation of the
laser. At an incident pump power of 17.8 W, as high as 1.12 W of cw output power at 671 nm is achieved. The optical-to-optical
conversion efficiency is up to 6.3%, and the fluctuation of the red output power was better than 3.5% in the given 30 min. 相似文献
14.
A design of laser-diode array (LDA) end-pumped Nd:YVO4 laser that generates simultaneous laser action at wavelengths 1064 and 1342 nm is presented. Using type-I critical phase matching (CPM) BiB3O6, 593.5 nm continuous-wave (cw) Orange-yellow laser is obtained by 1064 nm and 1342 nm in an intra-cavity sum-frequency mixing. The maximum laser output power of 3.62 W is obtained when an incident pump laser of 27.5 W is used. The optical-to-optical conversion is up to 13.2%. To the best of our knowledge, this is the highest conversion efficiency at 593.5 nm in an intra-cavity sum-frequency Nd:YVO4 laser. 相似文献
15.
We report a green laser at 532 nm generation by intracavity frequency doubling of a continuous wave (CW) laser operation of
a 1064 nm Nd:Y0.36Gd0.64VO4 laser under in-band diode pumping at 880 nm. An GdCa4O(BO3)3 (GdCOB) crystal, cut for critical type I phase matching at room temperature is used for second harmonic generation of the
laser. At an incident pump power of 17.8 W, as high as 2.92 W of CW output power at 532 nm is achieved. The optical-to-optical
conversion efficiency is up to 16.4%, and the fluctuation of the green output power was better than 2.5% in the given 30 min. 相似文献
16.
17.
An efficient single-frequency continuous-wave Nd:YVO4 ring laser pumped at 880 nm is presented. With compact four-mirror ring cavity and optical isolator, we obtained an output
power of 14.56 W at 1064 nm, corresponding to a slope efficiency of 61.7% and an optical-to-optical efficiency of 58.4% with
respect to the absorbed pump power. The stability of the output power was better than ±0.5% over two hours. At the same time,
a beam quality factor of M
2≈1.2 was measured and the line width of the longitudinal mode was about 25 MHz. To the best of our knowledge, this is the
highest slope efficiency and optical-to-optical efficiency in single-frequency Nd:YVO4 ring laser. 相似文献
18.
We report a efficient compact red laser at 671 nm generation by intracavity frequency doubling of a continuous wave laser
operation of a diode pumped Nd:Lu0.5Y0.5VO4 laser on the 4
F
3/2-4
I
13/2 transition at 1342 nm. An LBO crystal, cut for critical type I phase matching at room temperature is used for second harmonic
generation of the laser. At an absorbed pump power of 17.8 W, as high as 2.25 W of continuous wave output power at 671 nm
is achieved with 10-mm-long LBO. The optical-to-optical conversion efficiency is up to 12.6%, and the fluctuation of the red
output power was better than 3.6% in the given 30 min. 相似文献
19.
An efficient and compact green laser at 543 nm is generated by intracavity frequency doubling of a continuous wave (CW) laser
operation of a diode pumped Nd:YVO4 laser at 1086 nm under the condition of suppression the higher gain transition near 1064 nm. With 10 W diode pump power and
a frequency doubling crystal LBO, as high as 2.13 W of CW output power at 543 nm is achieved, corresponding to an optical-to-optical
conversion efficiency of 21.3% and the output power stability in 3 h is better than 2.27%. 相似文献