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1.
LD side-pumped 41 W high beam quality acousto-optical Q-switched single-rod Nd:YAG laser 总被引:2,自引:0,他引:2
We report a LD side-pumped high beam quality (M
x
2 = 1.20 and M
y
2 = 1.19) acousto-optic (AO) Q-switched single-rod Nd:YAG laser with a TEM00-mode dynamic stable cavity. At the pump power of 600 W, 41 W TEM00-mode 1064 nm laser was achieved with electro-optical conversion efficiency of 7%. The repetition rate and pulse width were
30 kHz and 102 ns, respectively with pulse energy of 1.4 mJ and peak power of 13 kW. Up to 24 W of 532 nm green laser was
generated by external frequency doubling, corresponding to 59% optical conversion efficiency. 相似文献
2.
Chang L. Yang C. Pang Q. S. Ai Q. K. Chen L. Y. Chen M. Li G. Yang J. H. Ma Y. F. 《Laser Physics》2012,22(5):914-917
We report an 885 nm laser diode (LD) end-pumped high beam quality (M
x
2 = 1.322, M
y
2 = 1.235) electro-optical Q-switched Nd:YAG laser with TEM00-mode output for the first time. At the absorbed pump power of 59.5 W, a 22.7 W 1064 nm laser was achieved at 10 kHz repetition
rate with optical-to-optical efficiency of 38.1%. The maximum pulse energy and shortest pulse width were 5.1 mJ and 14.5 ns
at 2 kHz repetition rate, and the calculated peak power was 352 kW. 相似文献
3.
通过优化双棒串接直腔结构设计,利用大功率LD侧面抽运、声光Q开关、Ⅱ类相位匹配S-KTP内腔倍频获得高效大功率绿色激光输出.当抽运电流为45 A、重复频率为15 kHz时,激光平均功率为132 W,光—光转换效率为132%,脉宽约为120 ns.在输出130 W时,测得1 h功率不稳定度小于05%,光束质量因子M2为67.对高功率抽运情况下激光介质的热透镜效应以及谐振腔稳定运转工作区域也进行了理论分析和实验研究.
关键词:
绿光激光器
腔内倍频
声光调Q
LD侧面抽运 相似文献
4.
报道了579 nm高功率KGd(WO4)2喇曼晶体外腔式喇曼黄光激光器的输出特性.基于808 nm脉冲激光二极管侧面泵浦Nd:YAG陶瓷、腔内BBO电光晶体同步延迟调Q和Ⅰ类临界相位匹配的LBO晶体腔外倍频方案,并通过外腔式KGW晶体Ng轴二阶斯托克斯喇曼频移,获得了579.54 nm黄光激光输出.当脉冲信号重复频率为1 kHz、532 nm泵浦光最高平均功率为5.02 W、脉冲宽度为10.1 ns时,获得了最高平均功率2.58 W、脉冲宽度7.4 ns、峰值功率348.6 kW的579.54 nm二阶斯托克斯喇曼黄光激光输出;532 nm至579.54 nm的光-光转化效率为51.4%、斜率效率为54.8%,光束质量因子Mx-579.542=5.829、My-579.542=6.336,输出功率不稳定性小于±2.35%.实验表明:外腔式喇曼结构能够高效地获得喇曼黄光,具有很高的光-光转化效率及良好的功率稳定性,并通过脉冲LD结合同步延迟电光调Q可获得高重复频率、高平均功率、窄脉冲宽度和高峰值功率的黄光激光输出. 相似文献
5.
Y. Yao Zhao Ling B. Li D. P. Qu K. Zhou Y. B. Zhang Y. Zhao Q. Zheng 《Optics and Spectroscopy》2013,114(3):459-462
Efficient and compact yellow green pulsed laser output at 543 nm is generated by frequency doubling of a passively Q-switched end diode-pumped Nd:YVO4 laser at 1086 nm under the condition of sup-pressing the higher gain transition near 1064 nm. With 15 W of diode pump power and the frequency doubling crystal LBO, as high as 1.58 W output power at 543 nm is achieved. The optical to optical conversion efficiency from the corresponding Q-switched fundamental output to the yellow green output is 49%. The peak power of the Q-switched yellow green pulse laser is up to 30 kW with 5 ns pulse duration. The output power stability over 8 hours is better than 2.56% at the maximum output power. To the best of our knowledge, this is the highest watt-level laser at 543 nm generated by frequency doubling of a passively Q-switched end diode pumped Nd:YVO4 laser at 1086 nm. 相似文献
6.
We report on a passively mode-locked TEM00 Nd:YAG oscillator with the beam quality at M
2 = 1.1 by a semiconductor saturable absorber mirror under 885 nm laser diode direct pumping for the first time. A maximum
average output power of 17 W at a repetition rate of 80 MHz with 39 ps pulse width was obtained under the absorbed pump power
of 38 W, corresponding to an optical-optical efficiency of 44% and the slope efficiency of 69%, respectively. 相似文献
7.
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
8.
We report a continuous-wave (CW) self-frequency-doubling blue laser at 468 nm by a diodepumped Nd3+:YCa4O(BO3)3 (Nd:YCOB) laser. With 14.3 W of diode pump power, a maximum output power of 211 mW in the blue spectral range at 468 nm has
been achieved. The beam quality M2 values were equal to 1.16 and 1.23 in X and Y directions, respectively. The output power stability over 30 min is better than 5%. To the best of our knowledge, this is
the highest power laser at 468 nm generated by self-frequency doubling of a diode pumped Nd:YCOB laser. 相似文献
9.
It is reported that efficient continuous-wave (CW) self-frequency-doubling green laser at 530 nm performed with a diode-pumped
Nd3+:YCa4O(BO3)3 (Nd:YCOB) laser. With a diode pump power of 14.3 W, TEM00 mode green laser at 530 nm of 1.07 W is obtained. At the output power level of 1.07 mW, the output stability is better than
5%. The beam quality M2 value is about 1.37. To the best of our knowledge, this is the highest power laser at 530 nm generated by self-frequency
doubling of a diode pumped Nd:YCOB laser. 相似文献
10.
We report a green laser at 541.5 nm generation by intracavity frequency doubling of a continuous wave (cw) laser operation
of a 1083 nm Nd:GdVO4 laser under 880 nm diode pumping into the emitting level 4
F
3/2. A 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 17.8 W, as high as 2.52 W of cw output power at 541.5 nm is achieved. The optical-to-optical
conversion efficiency is up to 14.2%, and the fluctuation of the green output power was better than 3.6% in the given 30 min. 相似文献
11.
We report a green laser at 532 nm generation by intracavity frequency doubling of a continuous wave (cw) laser operation of
a 1064 nm Nd:Y0.5Gd0.5VO4 laser under diode pumping into the emitting level 4
F
3/2. A KTiOPO4 (KTP) crystal, cut for critical type-II phase matching at room temperature is used for second harmonic generation (SHG) of
the laser. At an incident pump power of 17.8 W, as high as 4.21 W of cw output power at 532 nm is achieved. The optical-to-optical
conversion efficiency is up to 23.6%, and the fluctuation of the green output power was better than 2.8% in the given 30 min. 相似文献
12.
355 nm UV laser was obtained with a pulse width of less than 5 ns and a peak power at megawatt level by adopting the 808 nm
pulse laser diode (LD) side-pumped ceramic Nd:YAG and BBO crystal electrooptical Q-switched. The single-pulse energy was measured
to be 24.3 mJ with 4.86 ns pulse width and 5.11 MW peak power at a repetition rate of 1Hz under a 120 A pump current. Using
a volume of beam splitting mirrors, wavelength outputs at 1064, 532, and 355 nm pulse laser was obtained simultaneously with
a respective average output power of 656.6, 357.1, and 260.5 mW, the beam quality factor M
2 are (M
x − 10642 = 5.83, M
y − 10642 = 5.61), (M
x − 5322 = 4.25, M
y − 5322 = 4.08) and (M
x − 3552 = 6.32, M
y − 3552 = 6.15), corresponding to a conversion efficiency at 11% from 1064 to 355 nm. 相似文献
13.
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
14.
H. B. Shen Q. P. Wang Y. X. Zhang Z. J. Liu F. Bai X. X. Chen Z. H. Cong L. Gao W. X. Lan C. Wang Y. G. Zhang Z. G. Wu W. T. Wang 《Applied physics. B, Lasers and optics》2012,109(4):643-648
A high-power diode-side-pumped 1,105?nm Nd:GGG laser and a laser at 552?nm based on intracavity frequency doubling of 1,105?nm laser are demonstrated for the first time. A 26.8-W 1,105?nm laser continuous wave output was achieved under the incident pump power of 170?W. A LiB3O5 crystal is used for second harmonic generation of 1,105?nm laser. When the pump power was 170?W, the average output power at 552?nm of 7.3?W was obtained, corresponding to the optical conversion efficiency of 4.3?%. And the minimum pulse width is 181?ns with the pulse repetition rate of 10?kHz. The M 2 factors are measured to be 19.8 and 17.6 in the horizontal and vertical directions, respectively. 相似文献
15.
为了获得高功率窄脉宽532 nm绿光激光输出,通过高重复频率声光驱动调Q技术和LD侧面泵浦Nd∶GdVO4技术,获得高功率线偏振1 064 nm激光输出。采用内腔倍频方式,对非线性晶体KTP进行频率变换,实现高功率窄脉宽绿光激光输出。在电源输入电流30 A,调Q驱动频率10 kHz的条件下,获得最高功率30 W线偏振1 064 nm激光输出,脉宽30 ns,倍频KTP晶体获得23.4 W的532 nm绿光输出,1 064 nm到532 nm转化效率为78%。实验结果表明:通过声光调Q技术和LD侧面泵浦Nd∶GdVO4技术,可以实现高功率线偏振窄脉宽1 064 nm激光输出,倍频非线性晶体KTP可获得高功率窄脉宽532 nm激光。 相似文献
16.
Efficient and high-power intracavity frequency doubled diode-side-pumped Nd:YAG/KTP continuous wave (CW) green laser 总被引:1,自引:0,他引:1
Highly efficient continuous wave (CW) green beam generation by intracavity frequency doubling of a diode side-pumped Nd:YAG laser using a single pump head based on a copper-coated flow tube in a V-shaped cavity geometry has been demonstrated. A maximum 30.5 W of CW green power was obtained at a total diode pumping power of 260 W corresponding to 11.7% conversion efficiency of diode pump power to CW green power and 4.7% conversion efficiency of electrical power to CW green power. The performance of the laser by considering the pump power induced thermal lensing effect and the M2-parameter at the fundamental wavelength has been analyzed. 相似文献
17.
J. H. Liu 《Laser Physics》2012,22(10):1463-1465
We report a green laser at 542 nm generation by intracavity frequency doubling of a continuous wave (CW) laser operation of a 1086 nm Nd:YVO4 laser under 880 nm diode pumping into the emitting level 4 F 3/2. A KTiOPO4 (KTP) 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 14.5 W, as high as 1.33 W of CW output power at 542 nm is achieved. The optical-to-optical conversion efficiency is up to 9.2%, and the fluctuation of the green output power was better than 3.8% in the given 30 min. 相似文献
18.
Y. F. Lü X. H. Zhang X. D. Yin J. Xia A. F. Zhang J. Q. Lin 《Applied physics. B, Lasers and optics》2010,99(1-2):115-119
The continuous-wave high efficiency laser emission of Nd:YVO4 at the fundamental wavelength of 914 nm and its 457 nm second harmonic obtained by intracavity frequency doubling with an LBO nonlinear crystal is investigated under pumping by diode laser at 880 nm into emitting level 4F3/2. 6.5 W at 457 nm with M 2=1.8 was obtained from a 5-mm-thick 0.4 at.% Nd:YVO4 laser medium and a 15-mm-long LBO nonlinear crystal in a Z-type cavity for 18.6 W absorbed pump power. An optical-to-optical efficiency with respect to the absorbed pump power was 0.35. Comparative results obtained for the pump with diode laser at 808 nm, into the highly-absorbing level 4F5/2, are given in order to prove the advantages of the 880 nm wavelength pumping. 相似文献
19.
Simultaneous all-solid-state multi-wavelength lasers --- a promising pump source for generating highly coherent terahertz waves
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A diode-end-pumped Nd:YAG dual-wavelength laser operating at 1319
and 1338 nm is demonstrated. The maximum average output power of
the quasi-continuous wave linearly polarized dual-wavelength laser
is obtained to be 2.1 W at a repetition rate of 50 kHz with an
output power instability of less than 0.38% and beam quality
factor M2 of 1.45. Using the two lines, the highly coherent and
narrow linewidth terahertz radiation of 3.23 THz can be generated
in an organic 4-N, N-dimethylamino--methyl-stilbazolium tosylate
(DAST) crystal. Meanwhile, the multi-wavelength red laser at 659.5,
664 and 669 nm is generated by frequency doubling and sum frequency
processes in a lithium triborate (LBO) crystal. The average red
laser output power is enhanced up to 1.625 W at a repetition rate
of 15 kHz with an output power instability of better than 0.53%
and beam quality factor M2 of 6.05. Using the three lines, it
is possible to generate the multi-wavelength THz radiation of 3.3,
3.43 and 6.73 THz in an appropriate difference frequency crystal. 相似文献
20.
A Q-switched high efficient Ho:YAlO3 (Ho:YAP) laser pumped by a diode-pumped Tm:YLF laser at room-temperature is realized. The maximum output energy reaches 1.58
mJ under the repetition frequency of 5 kHz, when the incident pump power is 15.6 W. The pulse width is 22 ns. The wavelength
is 2118 nm when the transmission of output coupler is 30%. The beam quality factor is M
2 ∼ 1.39 measured by the traveling knife-edge method. 相似文献