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1.
High-power high-stability Q-switched green laser with intracavity frequency doubling of diode-pumped composite ceramic Nd:YAG laser
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We successfully obtain high-average-power high-stability Q-switched green laser based on diode-side-pumped composite ceramic Nd:YAG in a straight plano-concave cavity. The temperature distribution in composite ceramic Nd:YAG crystal is numerically analyzed and compared with that of conventional Nd:YAG crystal. By use of a composite ceramic Nd:YAG rod and a type-II high gray track resistance KTP (HGTR-KTP) crystal, a green laser with an average output power of 165 W is obtained at a repetition rate of 25 kHz, with a diode-to-green optical conversion of 14.68%, and a pulse width of 162 ns. To the best of our knowledge, both the output power and optical-to-optical efficiency are the highest values for green laser systems with intracavity frequency doubling of this novel composite ceramic Nd:YAG laser to date. The power fluctuation at around 160 W is lower than 0.3% in 2.5 hours. 相似文献
2.
Ryo Yasuhara Toshiyuki Kawashima Takashi Sekine Takashi Kurita Tadashi Ikegawa Osamu Matsumoto Masahiro Miyamoto Hirofumi Kan Hidetsugu Yoshida Junji Kawanaka Masahiro Nakatsuka Noriaki Miyanaga Yasukazu Izawa Tadashi Kanabe 《Optics letters》2008,33(15):1711-1713
We report a high-average-power and high-pulse-energy diode-pumped Nd:glass laser amplifier system consisting of two thermally-edge-controlled zigzag slab amplifiers and a stimulated Brillouin scattering mirror. This phase-conjugated system produces an average power of 213 W at 10 Hz in a 8.9 ns pulse (2.4 GW peak power) with an optical-to-optical conversion efficiency of 11.7% and a near-diffraction-limited beam. To the best of our knowledge, this is the highest performance from a Nd:glass-based laser amplifier system ever built. 相似文献
3.
We reported a 30 W average output power 532 nm green laser with 5 ns pulsed duration working at 80–100 kHz generated by a
hybrid MOPA system. The hybrid MOPA system consisted of a fiber amplifier and two solid-state amplifiers producing 77 W 1064
nm at pulse repetition rates of 80–100 kHz. The IR-to-green optical conversion efficiency was 44.7% at the working point of
100 kHz. The beam quality of green laser was measured better than M
2 < 1.6 in both orthogonal directions. Nanosecond 532 nm lasers with short pulsed duration could be practicable in silicon-based
material processing in the Photovoltaic industry. 相似文献
4.
5.
A high-power high-stability Q-switched green laser with intracavity frequency doubling using a diode-pumped composite ceramic Nd:YAG laser
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We successfully obtain a high-average-power high-stability Q-switched green laser based on diode-side-pumped composite ceramic Nd:YAG in a straight plano-concave cavity. The temperature distribution in composite ceramic Nd:YAG crystal is numerically analyzed and compared with that of conventional Nd:YAG crystal. By using a composite ceramic Nd:YAG rod and a type-II high gray track resistance KTP (HGTR-KTP) crystal, a green laser with an average output power of 165 W is obtained at a repetition rate of 25 kHz, with a diode-to-green optical conversion of 14.68%, and a pulse width of 162 ns. To the best of our knowledge, both the output power and optical-to-optical efficiency are the highest values for green laser systems with intracavity frequency doubling of this novel composite ceramic Nd:YAG laser to date. The power fluctuation at around 160 W is lower than 0.3% in 2.5 hours. 相似文献
6.
A cryogenically cooled Ti:sapphire regenerative ring amplifier was developed as a laser for generating a laser-produced plasma light source. With a 10 kHz 180 W pump laser, the amplifier output is 40 W before compression and 26 W after compression. We believe it to be the current highest average-power output from a single stage Ti:sapphire amplifier. The effective focal length of the thermal lens is measured to be 2.2 m at 100 K for 180 W of pump power. With a 1 m focal length lens placed in the resonator, the effect of a thermal lens on the resonator mode is suppressed. High conversion efficiency is achieved for the whole pumping power range without any additional measures for thermal compensation. 相似文献
7.
We report a high-repetition-rate, high-pulse-energy master oscillator power amplifier (MOPA) laser system, in which the seed
laser from the Nd:YAG rod-based oscillator cavity dumped at 500 kHz, was scaled up consecutively by a four-stage Nd:YVO4 preamplifier and a two-stage Nd:YAG zigzag slab main amplifier. The laser pulsed output with the average power of 510 W was
achieved, with the efficiency extraction of 26.6% at the main amplifier stage and the single-pulse energy of 1.02 mJ. 相似文献
8.
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
9.
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
10.
Walk off compensation and multi crystal (MC) cascaded single pass second harmonic generation (SP-SHG) in LBO was combined to improve the SHG conversion efficiency. We report a simple and compact implementation for (SP-SHG) of radiation, based on a cascaded multicrystal (MC) scheme that can provide high conversion efficiency without other focusing device, the enhancement factor of 2.9 was realized. At an incident pump power of 20 W, the average power of 6.1 W and pulse width of 12 ns green laser was obtained at a repetition rate of 42.4 kHz, corresponding to a peak power of 12 kW and single pulse energy of 144 ??J. The optical to optical conversion efficiency from diode to green and from IR to green laser are about 30.5 and 67.8%, the whole length of this system is about 150 mm, the output fluctuation of this system is less than 5% in 2 h. 相似文献
11.
Junhai Liu Jiyang Wang Jingqian Wei Changqing Wang Zongshu Shao Minhua Jiang 《Optics & Laser Technology》2000,32(5):339
A diode-laser array end-pumped acousto-optically Q-switched NYAB laser operating at both 1.06 and 0.53 μm has been demonstrated. An average output power of 1.3 W at 1.06 μm at a pulse repetition frequency (PRF) of 60 kHz was obtained with an optical conversion efficiency of 18.1% and a slope efficiency of 21.3%. At the incident pump power of 6.1 W, the 1.06 μm shortest laser pulse was reached at PRF of 20 kHz with FWHM width measured to be 32 ns, yielding a largest pulse energy of 30 μJ, and a highest peak power of 938 W. The attainable maximum average green power was found to be 185 mW, with an optical conversion efficiency of 3%. 相似文献
12.
One hundred and twenty one W green laser generation from a diode-side-pumped Nd:YAG laser by use of a dual-V-shaped configuration 总被引:1,自引:0,他引:1
Aicong Geng Yong Bo Yong Bi Zhipei Sun Xiaodong Yang Qinjun Peng Huiqing Li Ruining Li Dafu Cui Zuyan Xu 《Optics and Lasers in Engineering》2006,44(6):589-596
To ensure high-average-power and long-lifetime second harmonic generation, a dual-V-shaped configuration was designed. In this thermally near-unstable resonator, large fundamental mode size in Nd:YAG rod and small one in LBO crystal could be generated, which improved both the beam quality and the power density. A green output power of 121 W with pulse width of 68 ns and repetition rate of 10 kHz was obtained. To the best of our knowledge, the dual-V-shaped configuration is the first time used for green laser with average output power of more than 100 W. 相似文献
13.
We report a high-average-power, near-diffraction-limited Er:LuAG laser generating 5 W of power at 1.648 microm in either cw or repetitively Q-switched operation. When the laser is Q switched at 9 kHz, we measure 0.52 mJ/pulse. The laser is end pumped by a 20-W erbium fiber laser and achieves >30% optical conversion efficiency and >40% incident slope efficiency. This is, to our knowledge, the highest performance (average power and conversion efficiency) obtained from a bulk solid-state erbium laser. 相似文献
14.
T. Imahoko K. Takasago M. Kamata J. Sakuma T. Sumiyoshi H. Sekita M. Obara 《Applied physics. B, Lasers and optics》2007,89(2-3):217-222
We have developed a pulsed Yb:YAG thin disk green laser for pumping a 100 kHz and 10 W femtosecond laser. We optimized numerically
and experimentally the open duration of the acousto-optic (AO) Q-switcher and the internal SHG method, generating stable output
energy at a 100 kHz repetition rate. We demonstrated a 515 nm output power of over 80 W with a pulse-to-pulse stability of
less than 1% RMS with an LD power to green power conversion efficiency of 24%. With the developed green laser, we obtained
16 W of a Ti:sapphire laser in a cavity dumped mode.
PACS 42.55.Xi; 42.60.Gd; 42.60.By; 42.65.-k; 42.65.Re 相似文献
15.
We demonstrated a 36.9 W green laser with an intra-cavity second harmonic generation. A compact unstable V type cavity was
adopted to compress the whole cavity configuration. The type I phase-matching LiB3O5 was used as the nonlinear crystal in the second harmonic generation. The 36.9 W average power and 38 ns pulse width of 532
nm green laser was obtained at a repetition rate of 10.3 kHz, corresponding to a peak power of 94 kW. The optical to optical
conversion efficiency from diode to green and from IR to green laser was about 19.8 and 82%, the whole cavity length is about
300 mm. To the best of our knowledge, this is the shortest cavity configuration of side pump green system with output power
higher than 30 W and IR to green conversion efficiency larger than 80%. The output fluctuation of this system was less than
3% in 2 h. 相似文献
16.
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
17.
利用半导体激光器(LD)连续单端泵浦Nd:YVO4晶体,实现了声光调Q输出1 064nm的短脉冲。分析并用实验验证了不同透过率输出耦合镜及不同重复频率条件下,输出调Q脉冲能量、脉冲宽度及平均输出功率的规律。在泵浦功率为20.7W,重复频率为50kHz时,获得了最大平均输出功率为5.72W的脉冲,光 光转换效率为28%,斜效率为32.4%;在重复频率为10kHz时,最大单脉冲能量为0.286mJ,脉宽为22ns,峰值功率为13kW。 相似文献
18.
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
19.
C. M. Zhang J. L. Wang L. W. Song C. Li Y. S. Huang Y. X. Leng R. X. Li Z. Z. Xu 《Laser Physics》2010,20(4):727-732
High-conversion-efficiency and tunable self-phase-stabilized infrared laser pulses have been generated from a two-stage optical
parametric amplifier. With a 1 kHz repetition rate 800 nm pump source, the output idler pulses are tunable from 1.2 to 2.4
μm, and the maximum output average power of the idler pulses is >2 W with the total 7.4 W pump power, and the maximum parametric
conversion efficiency in the final optical parametric amplifier is near 60%. Due to the differential frequency process, the
output idler pulses is self-phase-stabilized, the phase fluctuation can reach 0.374 rad (rms). 相似文献
20.
高功率单频激光在激光雷达、光谱学、精密测量等领域具有广阔的应用前景.采用中心波长为1064 nm、光谱线宽为20 kHz、偏振消光比(PER)高于20 dB的单频线偏振分布式反馈光纤激光器做种子源(尾纤输出功率约为10 mW),利用种子注入主振荡功率光纤放大技术,通过两级级联放大实现了128 W高功率单频、线偏振、近衍射极限单模连续激光输出.主放大器光-光效率达到83%,PER高于12 dB.采用分段温控技术有效地提高了光纤中的受激布里渊散射(SBS)阈值,实验中未观察到明显的放大自发辐射和SBS现象,进
关键词:
掺Yb光纤放大器
主振荡功率光纤放大
单频
线偏振 相似文献