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1.
Diode end-pumped Q-switched high-power intracavity frequency-doubled Nd:GdVO4/KTP green laser 总被引:2,自引:0,他引:2
J. Liu C. Wang C.Q. Wang X. Meng H. Zhang L. Zhu J. Wang Z. Shao M. Jiang 《Applied physics. B, Lasers and optics》2001,72(2):171-174
A diode-laser-array end-pumped acousto-optically Q-switched intracavity frequency-doubled Nd:GdVO4/KTP green laser, formed with a three-mirror folded resonator, has been demonstrated. With 15 W of pump power incident upon
the Nd:GdVO4 crystal, a maximum average green output power of 3.75 W was obtained at 50 kHz of pulse repetition frequency, giving an optical
conversion efficiency of 25%, whereas the effective intracavity frequency-doubling efficiency was determined to be 72%. At
the incident pump power of 12.8 W, the shortest laser pulse was achieved at a pulse repetition rate of 10 kHz, the resulting
pulse width, single pulse energy, and peak power were measured to be 35 ns, 108 μJ, and 3.1 kW, respectively.
Received: 18 May 2000 / Published online: 20 September 2000 相似文献
2.
High power diode-pumped passively mode-locked Nd:YVO_4 laser at repetition rate of 3.2 GHz
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《中国物理 B》2019,(5)
A compact high power diode-pumped passively mode-locked Nd:YVO_4 laser with high repetition rate is realized.Using an Nd:YVO_4 crystal and a semiconductor saturable absorber mirror(SESAM) in the oscillator, the picosecond pulse output with an average power of 1.38 W, a repetition rate of 3.24 GHz, and a pulse duration of 11.4 ps is achieved. After one stage of amplification, the final output power reaches 11.34 W, corresponding to a total optical-to-optical efficiency of about 32%. The root mean square(RMS) value of power fluctuation is demonstrated to be less than 0.6% in 24 hours,showing a superior stability with the compact configuration. 相似文献
3.
Chenlin Du Junhai Liu Zhengping Wang Guibao Xu Xinguang Xu Kun Fu Xianlin Meng Zongshu Shao 《Optics & Laser Technology》2002,34(8):699-702
We demonstrated a diode-end-pumped continuous-wave and passively Q-switched Nd:GdVO4 laser operating at 1.06 μm wavelength with a three-mirror folded resonator. The maximum continuous-wave output power of 8.18 W was obtained at the incident pump power of 22.5 W, with the corresponding optical conversion efficiency of 36.4%. For Q-switched operation, the maximum average output power was measured to be 4.64 W with the corresponding optical conversion efficiency of 25.8%, when the initial transmission of Cr4+:YAG crystal was 90%. The shortest pulse width of 83 ns, the largest pulse energy of 20.7 μJ and the highest peak power of 246.7 W were obtained when the Cr4+:YAG crystal with an initial transmission of 85% was used. 相似文献
4.
Basiev TT Vassiliev SV Doroshenko ME Osiko VV Puzikov VM Kosmyna MB 《Optics letters》2006,31(1):65-67
Different regimes of laser operation and stimulated Raman scattering (SRS) for a laser diode (LD)-pumped PbMoO4:Nd3+ crystal have been investigated. Under 1.5 W LD pumping, the output power of the PbMoO4:Nd3+ laser in the free-running mode at 1056 nm reached 0.65 W with a slope efficiency of up to 53%. Using different LiF: F-2 saturable absorbers, we achieved a maximum pulse energy of 11 microJ at a 1.4 ns pulse duration and a maximum output power of 0.35 W (10 microJ) at a 7 ns pulse width in the passively Q-switched mode. PbMoO4:Nd3+ self-Raman-laser operation at 1163 nm (first Stokes) was obtained for the first time, to our knowledge. The self-Raman-laser output pulse energy was measured to be as high as 6 microJ and the pulse duration was estimated to be shorter than 500 ps. 相似文献
5.
R. Lan Z. Wang H. Liu H. Yu L. Guo L. Chen S. Zhuang X. Xu J. Wang 《Laser Physics》2010,20(1):187-191
A large pulse energy and high peak power passively Q-switched ceramic neodymium-doped yttrium aluminum garnet (Nd:YAG) laser
has been demonstrated with Cr4+:YAG crystals as the saturable absorbers. By employing a continuous wave (CW) laser-diode (LD) as the pump source, as high
as 11.3 W CW output power of 1064 nm was obtained under the pump power of 21.6 W, with an optical conversion efficiency of
52.3%. Inserting different initial transmissions Cr4+:YAG as saturable absorbers, under the incident pump power of 15.6 W, the largest pulse energy, shortest pulse width, and
highest peak power are measured to be 188 μJ, 3.16 ns, and 59.5 kW, respectively. As we has known, this is the best passively
Q-switched results ever reported by Nd:YAG ceramic material. 相似文献
6.
We report on a compact, efficient, and reliable monolithic Nd:YVO(4) slab oscillator-amplifier with an output power of 29.3 W in cw operation and an optical-to-optical efficiency of 24%. In electro-optically Q-switched operation, 28.8 W of average power at a repetition rate of 100 kHz with a pulse width of 15 ns was measured. The RMS stability of the pulse energy is better than 1.7%. The beam quality M(2) in both cw and pulse models was under 1.3. 相似文献
7.
Received August 11, 2003 We report continuous-wave and actively Q-switched laser performance achieved with Nd:LuVO4 crystal for the 4F(3/2) --> 4I(1/2) transition (corresponding wavelength of 1065.8 nm) under high-power diode pumping. Continuous-wave output power of 12.55 W is obtained with an optical conversion efficiency of 50.2%. In actively Q-switched operation the average output power reaches 5.42 W at a pulse repetition frequency of 40 kHz with 18 W of pump power incident upon the crystal, yielding an optical conversion efficiency of 30.1%. The pulse energy and peak power reach 138 microJ and 16.2 kW, respectively, at a pulse repetition frequency of 25 kHz under a pump power of 14.2 W; the pulse duration is 8.5 ns. 相似文献
8.
Efficient Nd:YVO_4 laser in-band pumped by wavelength-locked 913.9-nm laser diode and Q-switch operation
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An efficient 1064-nm Nd:YVO_4laser in-band pumped by a wavelength-locked laser diode(LD) at 913.9 nm was demonstrated. The maximum continuous wave(CW) output power of 23.4 W at 1064 nm was realized with the incident pump power of 40 W, corresponding to a total optical-to-optical efficiency of 58.5%. This is to the best of our knowledge the highest total optical-to-optical efficiency and output power of Nd:YVO_4laser in-band pumped by a 913.9-nm laser diode.The Q-switched operation of this laser was also investigated. Through a contrast experiment of pumping at 808 nm, the experimental results showed that an Nd:YVO_4laser in-band pumped by a wavelength-locked LD at 913.9 nm had excellent pulse stability and beam quality for high repetition rate Q-switching operation. 相似文献
9.
H. Yang Z. T. Jia B. T. Zhang J. L. He S. D. Liu Y. Yang X. T. Tao 《Laser Physics》2012,22(5):880-884
We report a Nd:LGGG laser at 1062 nm in the operations of the continuous-wave (CW) and passively Q-switching. The maximum
CW output power of 5.62 W was obtained, corresponding to an optical-to-optical conversion efficiency of 49.0% and slope efficiency
of 55.9%. By using Cr4+:YAG with initial transmission of 94% as the saturable absorber, for the first time, we got the maximum passively Q-switched
output power of 1.21 W, accompanied with a highest pulse repetition rate of 27.1 kHz and a shortest pulse width of 9.1 ns. 相似文献
10.
Chengqiang Lu Mali Gong Lei Huang Fahong He 《Applied physics. B, Lasers and optics》2007,89(2-3):285-289
A high-power high-repetition-rate acousto-optically Q-switched 1342 nm laser with double Nd:YVO4 crystals pumped by fiber-coupled laser diodes is presented. The highest output power of 13.7 W was achieved with a total
of 42 W pumping power in cw operation, the slope efficiency was measured as 36%, and the optical efficiency was better than
32%. In Q-switchedoperation, the highest pulse repetition rate of 100 kHz was obtained. At 50 kHz repetition rate, the laser
exported 11.2 W average output power, with 60 ns average pulse width, ∼5% width stability (RMS) and ∼8% peak-power stability
(RMS). At 10 kHz repetition rate, the highest average output power was measured as 6.3 W, single pulse energy was calculated
as 0.63 mJ, with pulse width of 19 ns and peak-power higher than 30 kW. Combining the experimental results, we analyze and
discuss some problems concerning Nd:YVO4 crystal working at 1,342 nm wavelength.
PACS 42.55.-f; 42.55.Xi; 42.60.Gd 相似文献
11.
We demonstrate a passively Q-switched Nd:LuVO4 laser at 916 nm by using a Nd, Cr:YAG crystal as the saturable absorber. As we know, it is the first time to realize the laser with a simple linear resonator. When the incident pump power increased from 14.6 W to 23.7 W, the pulse width of the Q-switched laser decreased from 24 ns to 21 ns. The pulse width was insensitive to the incident pump power in the experiment. The average output power of 288 mW with repetition rate of 39 kHz was obtained at an incident pump power of 22.5 W, with the optical-to-optical efficiency and slope efficiency 1.3% and 3.6%, respectively. 相似文献
12.
An end-pumped Nd:YVO4 laser fiber-coupled diode was designed. A maximum output power of 4.74 W TEM00 mode CW laser was obtained for a pump power of 10.5 W. The optical efficiency and slope efficiency were measured as 45.1
and 57.8% at 1064 nm, respectively. In Q-switching operation, 4.45 W average power at a pulse repletion rate of 5 kHz was
produced, with a stability of pulse peak value <2%. 相似文献
13.
This work presents experimental results concerning an actively Q-switched intracavity frequency-doubled Nd:LuVO4/LBO green laser with an acousto-optic modulator operated at the wavelength of 0.53 μm. The green average output power of
2.8 W was obtained at a pump power of 16.3 W and a pulse repetition rate of 20 kHz, resulting in an optical conversion efficiency
of 17%. When the pulse repetition rate is operated at 5 kHz, the shortest pulse width and the highest peak power at 0.53 μm
were measured to be 26.5 ns and 8.43 kW, respectively. 相似文献
14.
A diode-end-pumped high repetition rate, high peak power acousto-optical (AO) Q-switched 946 nm Nd:YAG laser was demonstrated
in this paper. In our experiments, a 20 mm miniature acousto-optical Q-switch was employed in a 45 mm linear laser cavity
for generating the short laser pulse. At a repetition rate of 10 kHz, a maximum average output power of 2.9 W was achieved
with a pulse width of 24.4 ns, giving a peak power of 11.9 kW. To the best of our knowledge, this is the highest peak power
946 nm Nd:YAG laser at high repetition rate operation. Moreover, pulse train with good stability was also obtained at the
repetition rate of 50 kHz. At an incident pump power of 22.3 W, up to an average output power of 3.5 W pulsed 946 nm laser
was generated at 50 kHz with a pulse width of 69 ns, corresponding to an optical conversion efficiency of 15.7% and an average
slope efficiency of 24.1%, respectively. 相似文献
15.
We report on a compact and highly efficient diode-end-pumped TEM00 Nd:YVO4 slab laser with an output power of 103 W and beam quality M2 < or = 1.5. The optical-to-optical efficiency was 41.5%. In electro-optically Q-switched operation, 83 W of average power at a pulse-repetition rate of 50 kHz with a pulse length of 11.3 ns was obtained. At a pulse-repetition rate of 10 kHz, 5.6 mJ of pulse energy, and 870 kW of peak power were measured. 相似文献
16.
Barium tungstate (BaWO4) is employed to achieve efficient stimulated Raman scattering conversion in a compact diode-pumped actively Q-switched Nd:YAG laser. With an incident pump power of 9.2 W, 1.56 W of 1181 nm first-Stokes average output power was generated at a pulse repetition rate of 20 kHz, corresponding to an optical-to-optical conversion efficiency of 16.9%. 相似文献
17.
An efficient compact diode-pumped acousto-optic actively Q-switched Nd:YAG ceramic laser operating at 1319 nm was demonstrated.
At an incident pump power of 23.7 W, an average output power of 4.8 W at a pulse repetition frequency of 30 kHz was obtained.
The corresponding optical-to-optical conversion efficiency was 20.3%. A maximum single pulse energy of 316 μJ with a pulse
duration of 78.5 ns was obtained at an incident pump power of 19.4 W and a pulse repetition frequency of 10 kHz. 相似文献
18.
L. Shihua L. Jie W. Guanggang L. Lei L. Shushan L. Min W. Yonggang Q. Lianjie 《Laser Physics》2008,18(6):729-731
We demonstrate a low-threshold and efficient diode-pumped passively continuous wave (CW) mode-locked Nd:GdVO4 laser with a reflective semiconductor saturable absorber mirror (SESAM). The threshold for the continuous wave was 0.36 W, and it is the lowest threshold for a continuous wave in a passively mode-locked Nd:GdVO4 laser to our knowledge. The maximum average output power of 1.82 W was obtained at a pump power of 6.65 W with a slope efficiency of about 29%. The CW mode-locked pulse duration was measured to be about 10.5 ps with a 116-MHz repetition rate. 相似文献
19.
A diode-pumped passively Q-switched Nd:Lu0.15Y0.85VO4 crystal laser at 1.34 μm with V:YAG employed as the saturable absorber was demonstrated for the first time to our best knowledge.
The maximum average output power of 0.529 W was achieved under the pump power of 5.6 W, corresponding to an opticaloptical
conversion efficiency of over 9.4% and slope efficiency of over 16%. The pulse width was shortened to 85.6 ns, corresponding
to the maximum pulse repetition rate of 250 kHz. The largest single pulse energy and peak power were 5.57 μJ and 58.74 W,
respectively. 相似文献
20.
Junhai Liu Chenlin Du Zhengping Wang Li Zhu Huaijin Zhang Xianlin Meng Jiyang Wang Zongshu Shao Minhua Jiang 《Optics & Laser Technology》2001,33(3)
A diode-pumped acousto-optically Q-switched intracavity frequency-doubled Nd:GdVO4/KTP green laser formed with a flat–flat resonator was demonstrated. 3.05 W of average green output power at pulse repetition frequency (PRF) of 40 kHz was obtained with an optical conversion efficiency of 18.4%, the effective intracavity frequency-doubling efficiency was 57%. At the incident pump power of 15 W, the shortest laser pulse occurred at PRF of 25 kHz with FWHM width of 14 ns, yielding the highest peak power of 7.44 kW; while the largest pulse energy of 0.14 mJ was achieved at PRF of 15 kHz. 相似文献