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1.
A single resonator 8.30 μm ZnGeP2 (ZGP) optical parametric oscillators (OPO) was reported in the paper. The OPO was pumped by a 10.2-W Tm,Ho:GdVO4 laser at 8 kHz in a Q-switch mode, a 170-mW idler was obtained at 8.30 μm, and the output power of the idler and signal wave
was 1.0 W, corresponding to an optical-optical conversion efficiency of 10.3% and a slope efficiency of 20.9%. Tm,Ho:GdVO4 laser was pumped by a 30-W fiber-coupled laser diode (LD) at the center wavelength of 801 nm. The output wavelength of Tm,Ho:GdVO4 laser was at 2.05 μm, and the energy per pulse of 1.28 mJ in 18 ns was achieved at 8 kHz with the peak power of 71.1 kW. 相似文献
2.
B. Q. Yao F. Chen C. T. Wu Q. Wang G. Li C. H. Zhang Y. Z. Wang Y. L. Ju 《Laser Physics》2011,21(3):468-471
In this paper, we presented experimental results concerning on the laser characteristics of two microchip lasers emitting
in the 2 μm range, Tm:Ho:YVO4 microchip laser and Tm:Ho:GdVO4 microchip laser. At a heat sink temperature of 283 K, the maximum output power of Tm:Ho:YVO4 laser and Tm:Ho:GdVO4 laser is 47 and 34 mW under absorbed pump power of 912 mW, respectively. High efficiency can be achieved for both lasers
at room temperature. Nevertheless, compared with Tm:Ho:GdVO4 laser, Tm:Ho:YVO4 laser can operate on single frequency with high power easily. At the heat sink temperature of 288 K, as much as 16.5 mW of
2052.3 nm single-longitudinal-mode (SLM) laser was achieved for Tm:Ho:YVO4 laser. Under the same condition, only 8 mW of 2048.5 nm SLM laser was achieved for Tm:Ho:GdVO4 laser. 相似文献
3.
The continuous-wave (CW) and acoustooptically (AO) Q-switched operation of a Tm (4 at %), Ho (0.4 at %):GdVO4 laser at a 2.05-μm wavelength were reported in this paper. The Tm,Ho:GdVO4 crystal was cooled by liquid nitrogen and end pumped by a 29.8-W fiber-coupled laser diode at 801 nm. A conversion efficiency of 41% and a slope efficiency of 46% were acquired with a continuous-wave output power of 12.2 W. An average power of 11.6 W was obtained at a pulse repetition frequency (PRF) of 10 kHz, corresponding to an optical-to-optical conversion efficiency of 38.9% and a slope efficiency of 41.4%. The energy per pulse of 1.8 mJ in 14 ns was achieved at 5 kHz with a peak power of 130 kW. 相似文献
4.
In this paper, we report a 18.8 W continuous wave and 18.4 W Q-switched diode-pumped cryogenic Tm(5 at %), Ho(0.5 at %):GdVO4 laser. The pumping source of Tm, Ho:GdVO4 laser is a fiber-coupled laser diode with fiber core diameter of 0.4 mm, supplying 42 W power at 802.5 nm. For input pump
power of 41.9 W at 802.4 nm, the output power of 18.8 W in CW operation, optical-to-optical conversion efficiency of 45% at
2.05 μm and the average output power of 18.4 W in Q-switched operation, optical-to-optical conversion efficiency of 44% at
2.04 and 2.05 μm have been attained. The emission wavelengths of the Tm(5 at %), Ho(0.5 at %):GdVO4 laser were firstly compared when it worked in CW mode and Q-switched mode. 相似文献
5.
In this paper, we report a Tm (5.5 at %), Ho (0.55 at %):GdVO4 laser pumped by diode laser at 800 nm. To our best knowledge, it is the first time that the use of Tm (5.5 at %), Ho (0.55
at %):GdVO4 crystal among the similar experiments. We observed the influences of LD working temperature i.e. pump wavelength to 2 μm
laser conversion efficiency. In the conditions of the continuous wave and 10 kHz acousto-optic Q-switch, high efficiency output
of 2.05 μm laser was obtained. With the maximum pump power of 34.6, 13.9, and 13.6 W at 2.05 μm laser output was achieved
respectively. Single laser pulse width was 25.6 ns in 10 kHz acousto-optic Q-switched condition. 相似文献
6.
J. Kong D. Y. Tang S. P. Ng L. M. Zhao L. J. Qin X. L. Meng 《Optics & Laser Technology》2005,37(1):7407-54
We report on a high-power diode-end-pumped CW Nd:GdVO4 laser. Under the pump power of 39.5 W, a maximum output power of 19.8 W and a slope efficiency of 58.5% were obtained. The beam quality M2 at maximum output power was measured to be around 2.62. The thermal focal length in Nd:GdVO4 crystal under the pump power from 22 to 40.6 W was measured. The pump-induced damage threshold was estimated to be 28.6 kW/cm2. 相似文献
7.
L. J. Li B. Q. Yao D. Y. Wu J. Wang L. Gang Y. Z. Wang Z. G. Zhang 《Laser Physics》2011,21(3):446-449
High efficient continuous wave (CW) and acousto-optical (AO) Q-switched operation of a b-cut Tm,Ho:YAlO3 (Tm,Ho:YAP) laser are reported in the paper. The Tm,Ho:YAP crystal was cooled by liquid nitrogen and pumped by a fiber-coupled
laser diode (LD). Different pump wavelengths were tried in the experiment. An 8.36-W output power was acquired at 2.12 μm
in the CW operation with an optical-optical conversion efficiency of 33.3%, and an 8.14-W average power was obtained at the
pulse repetition frequency (PRF) of 10 kHz with an optical-optical conversion efficiency of 32.4%. 相似文献
8.
In this paper, we report a 22.7 W continuous wave (CW) diode-pumped cryogenic Ho( at %), Tm(3 at %):GdVO4 laser. The pumping sources of Ho,Tm:GdVO4 laser are two fiber-coupled laser diodes with fiber core diameter of 0.4 mm, both of them can supply 42 W power laser operating
near 802 nm. For input pump power of 64.7 W at 802.5 nm, the output power of 22.7 W in CW operation, optical-to-optical conversion
efficiency of 35.1% at 2.05 μm has been attained. The M
2 factor was found to be 2.0 under an output power of 16.5 W. 相似文献
9.
10.
In this paper, we report the performance of a diode-pumped cryogenic Tm (5 at %), Ho (0.5 at %):GdVO4 laser with an RTP pockel cell Q-switch at different pulse repetition rate including 300 Hz, 500 Hz, 1 kHz, and 10 kHz. At
the pump power of 6.96 W, the maximum output of 1.7 mJ with a pulse width of 28 ns was achieved under 300 Hz repetition rate,
corresponding to a peak power of 61 kW. To the best of our knowledge, this is the first time that RTP was used as a Q-switch
generator in the 2 μm Tm,Ho:GdVO4 laser. 相似文献
11.
In this letter, we report a diodepumped CW Tm, Ho:GdVO4 laser at 77 K with a volume Bragg grating (VBG) instead of the conventional mirror. Inserting a Fabry-Perot etalon into the
cavity, a singlelon-gitudinal-mode of Tm, Ho:GdVO4 laser which I s operating at 2038.387 nm with output power 64 mW is obtained. The slope efficiency of 4.68% and a narrow
linewidth about 45 pm FWHM are achieved. And appropriate cavity length is about 75 ± 5 mm. 相似文献
12.
The effect of resonator length on ZnGeP2 doubly resonant optical parametric oscillator was reported in this letter. With the employment of a Tm,Ho:GdVO4 laser as the pump source at 2.05 μm, we have found that there are obvious peaks of the output power when the resonator lengths
are matched to the length of the pump source. The ZGP OPO can generate a maximum output power of 4.27 W at 3.80 μm signal
and 4.45 μm idler when the resonator length matches that of the pump source. 相似文献
13.
A method to characterize the thermal lens in a Nd:GdVO4 self-Raman laser is presented. The thermal focal length was measured to be as short as 180 mm with a self-Raman laser output power of 0.95 W. For comparison, the thermal focal lengths in the cases of fundamental operation and first-Stokes operation were measured experimentally, indicating that the heat generated in the SRS process exacerbated the thermal loading of the Nd:GdVO4 crystal. 相似文献
14.
An efficient and narrow linewidth Cr:ZnSe laser pumped by Tm,Ho:GdVO4 laser with a volume Bragg grating (VBG) is reported. The Cr:ZnSe laser operated at 2580 nm with emitting linewidth (FWHM)
about 0.8 nm. Using the volume Bragg grating, 3.57 W of output was achieved under total incident pump power of 13.1 W, corresponding
to optical-to-optical conversion efficiency of 27.3%. By use of conventional mirror, 4.11 W of output was achieved the same
incident pump power and the optical-to-optical conversion efficiency is 31.4%. 相似文献
15.
C. Du S. Ruan H. Zhang Y. Yu F. Zeng J. Wang M. Jiang 《Applied physics. B, Lasers and optics》2005,80(1):45-48
We report a high-power laser-diode-array end-pumped 0.3 at.% Nd:GdVO4 continuous-wave laser operating at 1.34 m. The maximum output power of 13.3 W was obtained at the incident pump power of 49.2 W, giving the corresponding optical conversion efficiency of 27% and the average slope efficiency of 28.5%. The thermal focal length of the Nd:GdVO4 crystal under the pump power from 15.3 to 50 W was measured experimentally. PACS 42.55.Xi; 42.70.Hj 相似文献
16.
Efficient and compact intracavity-frequency-doubled Nd:GdVO4/KTP laser end-pumped by a fiber-coupled laser diode 总被引:2,自引:0,他引:2
D.Y. Shen H.R. Yang J.G. Liu S.C. Tam Y.L. Lam W.J. Xie J.H. Gu K. Ueda 《Applied physics. B, Lasers and optics》2001,72(3):263-266
A compact and efficient diode-pumped intracavity-frequency-doubled Nd:GdVO4/KTP green laser is demonstrated with a flat–flat cavity design. With a 1.3 at. % Nd3+-doped GdVO4 crystal and pumped at the weak-absorption peak of 806 nm, the second-harmonic output power at 532 nm was measured to be 1.95 W
at an incident pump power of 8.4 W, corresponding to an optical conversion efficiency of 23.2%. The output characteristic
at the fundamental wavelength of 1.063 μm was investigated with two different pump wavelengths. More than 4.5-W output power
was generated when the laser was pumped at 806.2 nm.
Received: 26 July 2000 / Revised version: 18 September 2000 / Published online: 7 February 2001 相似文献
17.
F. Chen L. X. Yu X. L. Liu B. Q. Yao G. Li C. H. Zhang Y. Z. Wang Y. L. Ju 《Laser Physics》2012,22(1):91-94
In this paper, we present experimental results concerning on the laser characteristics of Tm:YAG laser and Tm: GdVO4 laser. At room temperature, the maximum output power of Tm:YAG laser and Tm:GdVO4 laser is 210 and 145 mW, respectively. High efficiency can be achieved for both lasers at room temperature. Nevertheless,
compared with Tm:GdVO4 laser, Tm:YAG laser can operate on single frequency with high power easily. As much as 60 mW of 2013.9 nm single-longitudinal-mode
(SLM) laser was achieved for Tm:YAG laser. For Tm:GdVO4 laser 51 mW of 1919.7 nm SLM laser was achieved. The SLM Tm:YAG laser is better for using as a seed laser for coherent wind
measurements and differential absorption LIDAR systems. 相似文献
18.
C. Li J. Song D. Shen N.S. Kim J. Lu K. Ueda 《Applied physics. B, Lasers and optics》2000,70(4):471-474
With a 10-W diode laser to pump Nd:GdVO4 crystal in a folded cavity, we demonstrated Cr4+:YAG passively Q-switched Nd:GdVO4 lasers at 1.06 μm. The maximum average output power of 2.1 W and the highest peak power of 625 W were, respectively, obtained
when the initial transmissions of the Cr4+:YAG crystals were 90% and 80%.
Received: 8 September 1999 / Revised version: 30 December 1999 / Published online: 8 March 2000 相似文献
19.
High power and efficiency of a 2044-nm c-cut Tm, Ho:YAlO3 laser 总被引:2,自引:0,他引:2
L. J. Li B. Q. Yao J. P. Qin D. Y. Wu Y. M. Wang J. Wang Z. L. He W. Y. Liu J. J. Chen Y. Z. Wang Z. G. Zhang A. H. Li 《Laser Physics》2011,21(3):489-492
A high power and efficiency of c-cut Tm, Ho:YAlO3 (YAP) laser is reported in the paper. The laser operated in continuous wave (CW) mode or Acousto-optical (AO) Q-switched mode at 2044 nm. The Tm, Ho:YAP crystal was cooled at the temperature of 77 K and pumped by a fiber-coupled laser diode (LD) with the centre output wavelength of 794.8 nm. In CW operation, a 9.30-W output power was obtained at a 150-mm physical cavity length, corresponding to a slope efficiency of 42.5%. In Q-switch mode, the output average power of 9 W was achieved at the pulse repetition frequency (PRF) of 10 kHz with a 130-ns pulse width. Moreover, the energy per pulse of 3.54 mJ in 47 ns was acquired at 2.5 kHz with a 75.3-kW peak power. 相似文献
20.
报道了激光二极管端面抽运Tm,Ho:YLF固体激光器的输出特性.室温下,选用不同透过率的输出耦合镜进行了实验研究,确定了最佳输出耦合镜透过率为2%. 利用小孔扫描的方法,得到了激光远场的光强分布,证明激光为基横模输出,并且给出了热焦距随抽运功率的变化关系.通过在激光谐振腔内插入两个固体Fabry-Perot标准具的方法,获得了2μm激光的单频输出,阈值功率为250mW,在抽运功率为2.8W时,单频输出功率为118mW.此单频激光器可用作激光振荡器和激光放大器的种子源.
关键词:
激光光学
激光二极管
Tm
Ho:YLF固体激光器
单频 相似文献