共查询到20条相似文献,搜索用时 10 毫秒
1.
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
2.
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
3.
We report on the LD-pumped passively mode-locked solid-state laser with SESAM (semiconductor saturable absorber mirror), in which the output beam is single passed through a flat mirror. The CW mode-locking pulse at 1064 nm, with an output power of 5 W, a pulse repetition rate of 98 MHz, and a pulse width of 25.3 ps. The beam quality is M 2 < 1.12 and the optical-optical efficiency is 35.7%. 相似文献
4.
L. Cui H. L. Zhang L. Xu J. Li Y. Yan P. F. Sha L. P. Fang H. J. Zhang J. L. He J. G. Xin 《Laser Physics》2011,21(1):105-107
43.6 W near-diffraction-limited continuous-wave laser beam at 1342 nm in 880 nm laser-diode partially end-pumped Nd:YVO4 slab laser is presented. The slope efficiency and optical-to-optical efficiency with respect to absorbed pumping power were
45.4% and 35.9%, respectively. At output power of 34.5 W, the M
2 factors in unstable and stable directions were 1.3 and 1.2, respectively. 相似文献
5.
We present experimental investigation on quasi-three-level Nd:YVO4 laser operation at 914 nm under 879 nm diode pumping directly into emitting level. A maximal output power of 3.0 W under
an absorbed pump power of 13.4 W was got, corresponding to an optical conversion efficiency of 22.4% and a slope efficiency
of 40.3%. To the best of our knowledge, this is the first report on a Nd:YVO4 laser at 914 nm using rod-type single crystal as the gain medium and end pumped by diode directly into the emitting level. 相似文献
6.
L. Zhang Y. G. Wang H. J. Yu L. Sun L. Guo W. Hou J. Tang X. C. Lin J. M. Li 《Laser Physics》2011,21(3):454-458
We report a 880 nm LD pumped passive Q-switched and mode-locked Nd:YVO4 laser using a single-walled carbon nanotube saturable absorber (SWCNT-SA). At the pump power of 7.78 W, the average out-put
power of 330 mW of Q-switched and mode-locked laser with optical conversion efficiency of 4.2% was generated. The repetition
rate and pulse width of the Q-switched envelope were 33 kHz and 5.6 μs, respectively. The repetition rate and pulse energy
of the mode-locked pulse within the Q-switched envelope were 80 MHz and 4.1 nJ, respectively. 相似文献
7.
We report efficient laser emission on the 914 nm 4
F
3/2 to 4
I
9/2 transition in Nd:YVO4 under the pump with diode lasers at 888 nm for the first time. Continuous wave 6.57 W output power at 914 nm is obtained
from a V-type resonator under 18.3 W of absorbed pump power; the slope efficiency with respect to the absorbed pump power
was 60.6%. Moreover, intracavity frequency doubling with BiB3O6 (BiBO) nonlinear crystal yielded 1.77 W of deep-blue light at 457 nm with beam quality characterized by an M2 factor of 1.25. 相似文献
8.
X. H. Chen P. Li X. Y. Zhang Q. P. Wang Z. J. Liu Z. H. Cong L. Li H. J. Zhang 《Laser Physics》2012,22(1):60-63
A highly efficient 880 nm laser diode pumped actively Q-switched Nd:YVO4/BaWO4 eye-safe Raman laser is demonstrated. With an absorbed pump power of 10.9 W, 1.7 W of average output power at the Stokes
wave-length is generated at a PRF of 40 kHz, corresponding to a diode-to-Stokes conversion efficiency of 15.6%. 相似文献
9.
We report an efficient laser emission on the 1066 nm 4 F 3/2 to 4 I 11/2 transition in Nd:LuVO4 under the pump with diode laser at 888 nm. Continuous wave (CW) 11.2 W output power at 1066 nm is obtained under 18.3 W of incident pump power; the slope efficiency with respect to the incident pump power was 71.9%. Moreover, intracavity frequency doubling with LiB3O5 (LBO) nonlinear crystal yielded 4.2 W of green light at 533 nm. An optical-to-optical efficiency with respect to the incident pump power was 23.0%. 相似文献
10.
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
11.
B. Z. Li X. X. Su X. K. Li X. H. Zhang X. Gao J. Q. Lin G. Y. Jin 《Laser Physics》2011,21(6):1006-1008
It is reported that efficient continuous-wave (CW) red laser generation at 693 nm in a LBO crystal at type-I phase matching
direction performed with a diode-pumped Nd:YVO4 laser. With incident pump power of 18.2 W, output power of 278 mW at 693 nm has been obtained using a 10 mm-long LBO crystal.
At the output power level of 278 mW, the output stability is better than 2.9%. 相似文献
12.
We report an efficient laser emission on the 912 nm 4
F
3/2 to 4
I
9/2 transition in Nd:GdVO4 under the pump with diode lasers at 888 nm. Continuous wave (CW) 4.91 W output power at 912 nm is obtained under 18.3 W of
incident pump power; the slope efficiency with respect to the incident pump power was 57.5%. Moreover, intracavity frequency
doubling with BiB3O6 (BiBO) nonlinear crystal yielded 1.33 W of deep-blue light at 456 nm. 相似文献
13.
With adjustable pulse durations, a semiconductor saturable absorber mirror (SESAM) passively mode-locked picosecond Nd:YVO4 laser was studied. The pulse duration was adjustable from 20 to 80 ps by using intracavity etalons of different thicknesses. 相似文献
14.
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
15.
We report a red laser at 670.5 nm generation by intracavity frequency doubling of a continuous wave (CW) laser operation of
a 1341 nm Nd:GdVO4 laser under in-band diode pumping at 912 nm. An LBO crystal, cut for critical type I phase matching is used for second harmonic
generation of the laser. At an incident pump power of 8.9 W, as high as 347 mW of CW output power at 670.5 nm is achieved.
The fluctuation of the red output power was better than 3.7% in the given 30 min, and the beam quality factor M
2 is 1.65. 相似文献
16.
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
17.
A high-efficiency 1341 nm Nd:GdVO4 laser in-band pumped at 912 nm is demonstrated for the first time. Using an all-solid-state Nd:GdVO4 laser operating at 912 nm as pump source, 542 mW output was obtained with 1.14 W absorbed pump power. The slope efficiency
with respect to the absorbed pump power was 56.6%, and the fluctuation of the output power was better than 2.6% in the given
30 min. The beam quality factor M
2 is 1.15. 相似文献
18.
We report the efficient blue laser at 458 nm generation by intracavity frequency doubling of a continuous wave (CW) laser
operation of a diode pumped Nd:LuVO4 laser on the 4
F
3/2 → 4
I
9/2 transition at 916 nm. An LiB3O5 (LBO) 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 18.2 W, as high as 1.73 W of continuous wave (CW) output power at 458 nm is achieved. The optical-to-optical
conversion efficiency is up to 9.5%, and the fluctuation of the red output power was better than 3.5% in the given 30 min. 相似文献
19.
High pulse amplitude stability of 0.62% (rms) is achieved at 60 kHz repetition rate in fundamental mode with double-end continuous-grown
YVO4/Nd:YVO4/YVO4 composite crystal. The average output power and pulse peak power are 32.9 W and 27.7 kW, respectively, with 19.8 ns pulse
width and 548 μJ pulse energy. The pulse amplitude stability is investigated experimentally. The stability gets improved with
the decrease of repetition rate and output transmission. From theoretical analysis, the reason of pulse instability at high
repetition rates is that the initial population inversion doesn’t saturate and the final population inversion doesn’t approach
zero. With the decrease of repetition rate and output transmission, the final population inversion decreases and the interaction
between two adjacent pulse periods is weakened. Therefore, pulse stability improves. 相似文献
20.
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