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1.
报道了一种用国产激光二极管泵浦的1064nm单频Nd∶YVO4红外激光器的设计。利用布氏片和石英晶体组合构成的双折射滤光片技术,在泵浦功率为800mW时,实现了功率为360mW的1064nm红外单频输出。测量结果表明,偏振比超过了1000∶1,功率稳定性优于0 5%,振幅噪声小于0 1%。 相似文献
2.
A passively Q-switched dual-wavelength solid-state laser is presented. The two wavelengths are emitted by two different crystals in order to avoid gain competition, and the synchronization between the pulses is obtained by external triggering of the saturable absorber. Sum frequency mixing is demonstrated, proving the interest of this source for terahertz generation in the 0.3-0.4 THz range through difference frequency generation. 相似文献
3.
Nd:YVO4是一种重要的激光晶体,广泛的应用到各种激光器中,本论文着重阐述不同的偏振光对应Nd:YVO4的受激发射截面不同从而导致该谱线的增益不同,并从实验上给出了定量的结果,实验表明对于a-cut的Nd:YVO4当偏振态由π到σ变化时,受激截面由21.5×1019cm2变化到14.3×10119cm2,对应的激光输出功率也由4.1 W变化到1.7 W.利用此原理提出了一种全新的弱增益谱线与强增益谱线的和频方法,并利用此方法实现了593.5 nm激光的运转. 相似文献
4.
We present for the first time a Nd:YAG laser emitting at 1064 nm intracavity pumped by a 946 nm diode-pumped Nd:YAG laser.
A 885 nm laser diode is used to pump the first Nd:YAG crystal emitting at 946 nm, and the second Nd:YAG laser emitting at
1064 nm intracavity pumped at 946 nm. We achieved an output power of 7.97 W at 1064 nm for an absorbed pump power at 946 nm
of 9.55 W, corresponding to an optical efficiency of 83.4%. The beam quality M2 quality factor is about 1.1 at the maximum output power. 相似文献
5.
Continuous wave 935 nm Nd:CNGG laser at watt-level power 总被引:1,自引:0,他引:1
An efficient continuous wave (CW) laser-diode-pumped Nd-doped Ca(3)(NbGa)(2-x)Ga(3)O(12) (CNGG) laser operating at 935 nm is demonstrated by using a simple linear cavity for the first time to our knowledge. Output power up to 1.12 W is obtained, corresponding to a slope efficiency of 7.1% and an optical-to-optical efficiency of 5.7%. The laser operates with the fundamental transverse mode when the output power is as high as 800 mW. This laser provides a potential light source for differential absorption lidar in water vapor detection. 相似文献
6.
报道了一种用国产激光二极管泵浦的1064nm单频NdYVO4红外激光器的设计.利用布氏片和石英晶体组合构成的双折射滤光片技术,在泵浦功率为800mW时,实现了功率为360mW的1064nm红外单频输出.测量结果表明,偏振比超过了10001,功率稳定性优于0.5%,振幅噪声小于0.1%. 相似文献
7.
用光纤延时自差法测量二极管激光纵向泵浦单频运转的Nd:YVO4激光器的线宽。在1秒时间内,激光线宽为25kHz。还测量了线宽与激光器腔长和输出功率的关系。 相似文献
8.
An efficient continuous-wave YVO_4/Nd:YVO_4/YVO_4 self-Raman laser pumped by a wavelength-locked 878.9 nm laser diode
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We report an efficient continuous-wave self-Raman laser at 1176 nm based on a 20-mm-long composite YVO_4/Nd:YVO_4/YVO_4 crystal and pumped by a wavelength-locked 878.9 nm diode laser.A maximum output power of 5.3 W is achieved at a pump power of 26 W,corresponding to an optical conversion efficiency of 20%and a slope efficiency of 21%.The Raman threshold for the diode pump power was only 0.92 W.The results reveal that in-band pumping by a wavelength-locked diode laser significantly enhances output power and efficiency of self-Raman lasers by virtue of improved pump absorption and relieved thermal loading. 相似文献
9.
We present for the first time a Nd:YVO(4) laser emitting at 1064 nm intracavity pumped at 912 nm by a Nd:GdVO(4) laser. We carried out a model to design the system properly, and laser performance was experimentally investigated. Intracavity sum-frequency mixing at 912 and 1064 nm was then realized in a BiBO crystal to reach the blue range. We obtained a cw output power of 155 mW at 491 nm with a pump laser diode emitting 20 W at 808 nm. 相似文献
10.
We present the operation of a diode-pumped high-power electro-optically Q-switched 4 W Nd:LuAG laser operating at 1064 nm. At an absorbed optical power of 20 W, the laser described provides a maximum output of 3.5 W average power at a repetition rate of 50 Hz. The output varies up to a factor of 1.3% for about 1 h operation with a peak power of 280 kW, with the laser beam quality in the TEM00 mode. 相似文献
11.
从LD端面抽运固体激光器的激光阈值公式出发,建立了双波长激光同时振荡的阈值条件,理论计算了腔镜对于两个波长的透过率关系,实现了LD端面抽运Nd:YAG 1319nm/1338nm双波长激光连续和准连续输出.双波长激光连续输出功率可达6W,斜效率为30%;准连续输出功率在重复频率50kHz时可达4.75W,斜效率为24.73%,脉冲宽度为55.05ns;腔内插入布儒斯特片,在重复频率为50kHz时,双波长激光准连续线偏振输出功率可达2.22W,不稳定性小于0.52%,M2 相似文献
12.
报道连续激光二极管泵浦的Nd:YVO4激光器的腔内倍频实验结果,比较了不同掺杂浓度的Nd:YVO4晶体的倍频输出功率,最大绿光输出功率为22.2mW,光-光转换效率为3.5%,此外,还研究了腔内倍频的输出涨落特性。 相似文献
13.
This study demonstrates continuous-wave simultaneous dual-wavelength emission at 1064 and 1342 nm in an Nd:LuVO4 laser by using a T-type cavity configuration. The output powers indicating a function of pump power had two evolutions depending
on the strength of the completion of two wavelength emissions. One is that the output power increased linearly with the pump
power in weak competition, and the output power and slope efficiency of 1064 and 1342 nm were 1.17 W and 13%, and 0.213 W
and 2.8%, respectively. The other is that the extracting-energy capabilities of two wavelength emissions were close, and the
evolution was not linear and the variations demonstrated multiple stages depending on the pump power. Moreover, the ratio
of output power, defined as the output power at 1064 nm divided by that at 1342 nm, is tuned from 0 to 5.5 by varying the
1064 nm cavity, and equal output powers of 1064 and 1342 nm can be obtained at each pump power. 相似文献
14.
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16.
从LD端面抽运固体激光器的激光阈值公式出发,建立了双波长激光同时振荡的阈值条件,理论计算了腔镜对于两个波长的透过率关系,实现了LD端面抽运Nd:YAG 1319nm/1338nm双波长激光连续和准连续输出.双波长激光连续输出功率可达6W,斜效率为30%;准连续输出功率在重复频率50kHz时可达4.75W,斜效率为24.73%,脉冲宽度为55.05ns;腔内插入布儒斯特片,在重复频率为50kHz时,双波长激光准连续线偏振输出功率可达2.22W,不稳定性小于0.52%,M2
关键词:
端泵Nd:YAG激光器
1319nm/1338nm双波长
声光调Q
太赫兹波 相似文献
17.
We report on the efficient continuous-wave (CW) dual-wavelength operation of a Nd:LuVO4 laser at 916 and 1343 nm. An output power of 2.15 W for the dual-wavelength was achieved at the incident pump power of 18.2
W. Intracavity sum-frequency mixing at 916 and 1343 nm was then realized in a LBO crystal to reach the yellow-green range.
A maximum output power of 523 mW in the yellow-green spectral range at 545 nm has been achieved. The yellow-green output stability
is better than 3.5%. The yellow-green beam quality M
2 value are about 1.31 and 1.18 in both horizontal and vertical dimensions, respectively. 相似文献
18.
We report a blue laser at 473 nm generation by intracavity frequency doubling of a continuous wave (CW) laser operation of
a 946 nm Nd:YAG laser under in-band diode pumping at 869 nm. An BiBO 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 8.6 W, as high as 721 mW of
CW output power at 473 nm is achieved. The optical-to-optical conversion efficiency is up to 8.4%, and the fluctuation of
the blue output power was better than 3.5% in the given 30 min. 相似文献
19.
报道了一种由波长锁定878.6 nm半导体激光器共振抽运两块不同掺杂浓度Nd:YVO4晶体串接的1064nm激光器,并与使用单块的低掺杂浓度晶体和高掺杂浓度晶体情况进行比较,实验表明利用波长锁定878.6nm半导体激光器共振抽运双晶体串接的方式,有利于降低晶体的热效应,提高光光转换效率.当抽运功率为40 W时,获得了28.2 W的1064 nm激光输出,光光转换率为70.5%,斜率效率为70.6%,相对吸收光的光光转换率76%,斜率效率为76.4%,同时该激光器在10?C—40?C的温度变化范围内具有极好的温度稳定性. 相似文献
20.
The effect of Nd3+ concentration on the CW and Q-switched laser performances at 1064 nm from Nd: YVO4 has been studied under diode laser pumping in identical laser configuration. The Nd3+ concentrations used were 1, 2 and 3 at.% in YVO4 crystals. Under the CW operations we have compared the thermal lensing effect, slope efficiencies and also the beam quality
at the fourth-order degeneracy configuration. Q-switching was done with the help of an acousto-optic modulator and we have
compared the pulses obtained from Nd: YVO4 laser with different doping concentration. It was found that the 1 at.%-doped crystal is the best, offering highest optical-to-optical
conversion efficiency (55%), lowest fractional heat load (24%), highest pulse energy (80 μJ) and shortest pulse width (20 ns). It was also found that there was not much difference in performances for 2 and 3 at.%-doped
crystals both in CW and Q-switched configurations. 相似文献