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1.
X.P. Hu G. Zhao C. Zhang Z.D. Xie J.L. He S.N. Zhu 《Applied physics. B, Lasers and optics》2007,87(1):91-94
High-power blue light was generated from a diode-side-pumped Q-switched 1319 nm Nd:YAG laser with a periodically poled, stoichiometric
LiTaO3 (PPSLT) crystal. The PPSLT sample used in this experiment consists of two segments in series: the first segment has a period
of 14.08 μm for the second harmonic generation (SHG) and the second segment has periods of around 4.6 μm for the generation
of blue light by mixing fundamental and SH. An average power of 466 mW of a 440 nm blue light was obtained at the fundamental
power of ∼5.4 W with a conversion efficiency of 8.6%. The output power fluctuated by 3% over a half-hour period. This result
indicates that our scheme is a practical method to construct a reliable compact blue laser.
PACS 42.70.Mp; 42.79.Nv; 42.55.Xi 相似文献
2.
It is reported that efficient continuous-wave (CW) blue laser generation at 465 nm in a BiB3O6 (BiBO) crystal at type-I phase matching direction performed with a diode-pumped Nd3+:YAlO3 (Nd:YAP) laser. With incident pump power of 18.4 W, output power of 823 mW at 465 nm has been obtained using a 10 mm-long
BiBO crystal. At the output power level of 823 mW, the output stability is better than 2.3%. 相似文献
3.
A thorough theoretical analysis of the near-infrared properties of periodically poled KTiOPO4 (PPKTP) and stoichiometric MgO-doped LiTaO3 (MgO:PPSLT) crystals for optical parametric oscillation with excitation at 1 μm is presented. To the best of our knowledge,
the optical, phasematching, wavelength tuning, and dispersive properties of these crystals for parametric interactions are
discussed in detail for the first time. In addition, a new design for high power parametric devices based on PPKTP or MgO:PPSLT
crystals with ultrafast Yb-ion laser pump is proposed. The results form a useful reference for the selection of materials
and operating conditions for the practical design of high power femtosecond optical parametric oscillators with excitation
at 1 μm. 相似文献
4.
X.P. Hu X. Wang Z. Yan H.X. Li J.L. He S.N. Zhu 《Applied physics. B, Lasers and optics》2007,86(2):265-268
High power red light was generated from a periodically-poled stoichiometric LiTaO3 (PPSLT) by single-pass frequency doubling of a diode-side-pumped, Q-switched Nd:YAG laser at 1319 nm. An average power of
2.4 W of the 660 nm red light was obtained at the fundamental power of ∼5.4 W with the conversion efficiency up to 44.4% and
with low fluctuation down to 2%. The high efficiency and stability at the red output indicate that it is a practical method
to construct a reliable compact red laser.
PACS 42.70.Mp; 42.79.Nv; 42.55.Xi 相似文献
5.
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
6.
O.B. Jensen M. Bruun-Larsen O. Balle-Petersen T. Skettrup 《Applied physics. B, Lasers and optics》2008,91(1):61-63
Nanosecond yellow light has been generated through simultaneously phase matched sum-frequency generation and optical parametric
oscillation in a periodically poled LiNbO3 crystal. 300 mW of yellow light at a wavelength of 586 nm has been generated from 1.3 W of laser power from a Q-switched
Yb:YAG laser operating at 1031 nm. The conversion efficiency of the device is 23%.
PACS 42.65.Ky; 42.65.Yj 相似文献
7.
Passively Q-switched green output with Cr4+:YAG as saturable absorber and PPMgLN as the frequency doubling crystal was realized in a compact diode end-pumped Nd:YVO4 laser. The green light output power, pulse width, pulse repetition rate, pulse energy and peak power with three Cr4+:YAG of different initial transmissions were investigated. The maximum average output power was 1.2 W at the pump power of
4.0 W and the maximum conversion efficiency was 30% with the Cr4+:YAG of 90% initial transmission. The maximum pulse energy and minimum pulse width were 10.9 μJ and 12 ns with the Cr4+:YAG of 75% initial transmission. 相似文献
8.
D.W. Ward E.R. Statz K.A. Nelson 《Applied Physics A: Materials Science & Processing》2007,86(1):49-54
Fabrication of patterned materials in ferroelectric LiNbO3 and LiTaO3 crystals using femtosecond laser micromachining is presented and discussed. Damage feature sizes in the 10–100 μm range were achieved using 800-nm, 50-fs (FWHM) ultra-fast laser pulses with energies ranging from 10 μJ up to 350 μJ. Fabrication of polaritonic devices such as waveguides, resonators, focusing reflectors, diffractive and dispersive elements, photonic band gap materials, and other microstructures is demonstrated. PACS 77.84.Dy; 42.62.Cf; 71.36.+c 相似文献
9.
D. M. Zashchirinskii L. I. Koroleva A. S. Morozov R. Shimchak 《Physics of the Solid State》2011,53(10):2038-2041
Spontaneous generation of electric voltage has been found in a Sm0.55Sr0.45MnO3 single crystal grown by floating zone melting with cooling in oxygen. The maximum voltage of 60 μV has been observed in the
region of temperatures corresponding, simultaneously, to destruction of the CE-type antiferromagnetic ordering and charge
ordering in some clusters. The maximum voltage remains unchanged for 24 h and decreases by 45% in a magnetic field of 14.2
kOe. It has been shown that the spontaneous voltage is caused by the presence of regions with different electric charges in
the sample. 相似文献
10.
X. H. Chen P. Li X. Y. Zhang Q. P. Wang Z. J. Liu Z. H. Cong L. Li H. J. Zhang 《Laser Physics》2011,21(12):2040-2044
A diode-end-pumped actively Q-switched eye-safe intracavity Raman laser at 1532 nm is demonstrated, with Nd:YVO4 as the laser crystal and BaWO4 as the Raman crystal. The highest average power of 1.5 W is obtained, with an incident pump of 12 W and a pulse repetition
rate of 35 kHz, corresponding to a diode-to-Stokes conversion efficiency of 12.5%. 相似文献
11.
W. Liang X. H. Zhang J. Xia G. Y. Jin L. J. Xu G. C. Sun Z. M. Zhao 《Laser Physics》2011,21(5):861-863
A high-power diode -pumped Nd3+:YAl3(BO3)4 (Nd:YAB) laser emitting at 1338 nm is described. At the incident pump power of 9.8 W, as high as 734 mW of continuous-wave
(CW) output power at 1338 nm is achieved. The slope efficiency with respect to the incident pump power was 9.0%. To the best
of our knowledge, this is the first demonstration of such a laser system. The output power stability over 60 min is better
than 2.6%. The laser beam quality M
2 factor is 1.21. 相似文献
12.
We report an efficient intracavity second-harmonic generation (SHG) at 1359 nm in a non-linear optical crystal, LiB3O5 (LBO), performed with a diode end pumped continuous-wave (cw) Nd:Lu2O3 laser. In the case of a laser with a Nd:Lu2O3 crystal frequency-doubled with a LBO crystal cut for type I frequency doubling. A cw SHG output power of 462 mW has been
obtained using a 10 mm long LBO crystal. The red power stability was 3.4% in 4 h. 相似文献
13.
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
14.
We report a red laser at 672 nm generation by intracavity frequency doubling of a continuous wave (CW) laser operation of
a 1343 nm Nd:LuVO4 laser under in-band diode pumping at 888 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 1.73 W of CW output power at 672 nm is achieved. The optical-to-optical
conversion efficiency is up to 9.7%, and the fluctuation of the red output power was better than 3.3% in the given 30 min. 相似文献
15.
The non-linear optical (NLO) crystal LaCa4 O(BO3)3 (LaCOB ) has been grown by the Czochralski method. X-ray diffraction experiments show that LaCOB crystal possesses the space group Cm, and its unit cell constants have been measured to be a=0.8168(3) nm,b=1.6081(7) nm and c=0.3630(6) nm, with an angle =101.39°. The thermal properties of LaCOB have been studied; the specific heat of the crystal is 321.9 J/molK at 330 K, and the three principal coefficients of thermal expansion of the principal axes have been calculated from the measured data to be 5.61×10-6 K-1, 7.21×10-6 K-1 and 11.01×10-6 K-1, respectively. The transmission spectrum shows that LaCOB crystal has a wide transparency wavelength range, and may be used as a NLO crystal. PACS 81.10.Fq; 65.40.Ba; 65.40.De 相似文献
16.
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
17.
Performance comparisons of laser-diode pumped passively Q-switched intracavity-frequency-doubled Nd:Gd0.19Y0.81VO4 and Nd:Gd0.83Y0.17VO4 lasers at 671 nm are demonstrated for the first time to our knowledge. KTP crystal is used as the frequency doubling material
and V:YAG crystal as the saturable absorber with initial transmission of 89%. The dependences of average output power, pulse
width, pulse repetition rate, single-pulse energy and peak power on incident pump power are measured and contrasted. The experimental
results show that, Nd:Gd0.83Y0.17VO4 laser has more excellent properties than Nd:Gd0.19Y0.81VO4 laser at 671 nm. 相似文献
18.
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
19.
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
20.
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