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包层泵浦的L波段Er3+/Yb3+共掺光纤激光器 总被引:5,自引:4,他引:1
报道了一种工作波长在L波段的包层泵浦Er3+/Yb3+共掺光纤环形激光器. 环形腔内的激光工作介质为一段9 m长的Er3+/Yb3+共掺高掺杂光纤. 利用6个976 nm LD同时抽运前段Er3+/Yb3+共掺双包层光纤产生的放大自发辐射谱作二次抽运源, 使腔内增义谱由C波段移到L波段, 实现了L波段光纤激光器的稳定输出; 采用包层泵浦技术, 在抽运功率为3594.5 mW时, 测得泵浦入纤功率为2731.8 mW, 实现了输出连续功率最大518.4 mW,斜率效率达到19% 的激光输出; 所形成激光的工作波长为1613.94 nm, 激光光谱的3 dB带宽为1.5 nm, 边模抑制比接近于50 dB. 相似文献
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L波段可调谐线形腔Er/Yb共掺双包层光纤激光器 总被引:1,自引:1,他引:0
报道了一种结构简单、工作在L波段、可调谐的线形腔Er/Yb共掺双包层光纤激光器.利用由两段高双折射光纤和两个偏振控制器构成的环镜滤波器对激光器进行调谐,使调谐范围达到34 nm,功率起伏小于±0.2 dB.用976 nm多模LD泵浦Er/Yb共掺双包层光纤产生的ASE作为二次泵源,对未泵浦的一段光纤进行泵浦,使腔内Er/Yb共掺光纤的增益谱移到L波段;多个泵浦源同时对Er/Yb共掺双包层光纤进行侧向泵浦,使激光器输出功率超过了200 mW. 相似文献
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A novel Yb3+-doped fiber ring cavity laser pumped by a 977 nm laser diode is presented with its output laser wavelength of 1060 nm. Based on a fiber Bragg grating (FBG), the laser exhibits 0.20 nm line-width, 7.5 mW laser output power, 40 dB signal-to-noise ratio (SNR) and 66% slope efficiency. 相似文献
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1 Introduction Today ,theEr3 dopedfiberlaserandtheamplifierarewidelyusedinthefieldofopticalcommunicationandotherfields.TheYb3 dopedfiberlaserandamplifierhavebeeninventedandusedinmanyimportantfieldstoo ,andtheyareattractingmoreandmoreattention[1~ 4 ] .Compar… 相似文献
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Laser emission in the range of 1.88-1.99 micrim from a Tm3+ -doped tellurite fiber is demonstrated when pumped with a diode-pumped Er3+/Yb3+-doped silica fiber laser operating at 1.57-1.61 microm. This pump source excites the Tm3+ ions directly into the F43 upper laser level and yields an output power of 280 mW with a slope efficiency of 76% in a 99%-12% laser cavity arrangement and a 32 cm long fiber. This result is very close to the Stokes efficiency limit of approximately 80%. This is, to the authors' knowledge, the first demonstration of high efficiency lasing in a tellurite fiber at wavelengths longer than 1.56 microm. 相似文献
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制作了基于KMnF_3∶Yb~(3+),Er~(3+)纳米晶材料的工作波长655 nm的聚合物平面光波导放大器。材料的吸收光谱表明,KMnF_3∶Yb~(3+),Er~(3+)纳米晶在980 nm附近有很强的吸收。在980 nm激光的激发下,由于Er~(3+)和Mn2+能级之间的能量传递,KMnF_3∶Yb~(3+),Er~(3+)纳米晶产生了很强的红色上转换发光。根据KMnF_3∶Yb~(3+),Er~(3+)纳米粒子的发光特性,制备了KMnF_3∶Yb~(3+),Er~(3+)NCs-PMMA复合材料,用其作为芯层设计了掩埋形结构光波导放大器,利用传统的半导体工艺完成器件制备。器件测试结果表明,当655 nm信号光功率为0.1 m W、980 nm泵浦功率为260 m W时,器件获得了2.7 d B的相对增益。 相似文献
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自调Q、自锁模铒/镱共掺光纤激光器 总被引:4,自引:1,他引:3
研究了结构新颖的环形腔铒/镱(Er/Yb)共掺双包层光纤激光器.为了获得高功率激光输出,使用6个激光二极管(LD)同时抽运Er/Yb共掺光纤,采用光纤光栅(FBG)Sagnac环作为波长选择器,得到了中心波长为1548.11 nm、谱线宽度为0.06 nm的窄线宽激光输出;并利用增益光纤作为可饱和吸收体,实现了自调Q、自锁模脉冲输出.当抽运功率为719 mW时,激光器输出自调Q脉冲,脉冲周期为20μs,脉冲宽度为2.8μs,脉冲的平均功率为38.4mW,峰值功率为274.3mW;当抽运功率为3.6 W时,激光器输出自锁模脉冲,脉冲宽度为4ns,平均功率为319 mW,脉冲峰值功率大于10 W,重复频率为7.937 MHz. 相似文献
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Tolstik NA Kurilchik SV Kisel VE Kuleshov NV Maltsev VV Pilipenko OV Koporulina EV Leonyuk NI 《Optics letters》2007,32(22):3233-3235
We report the spectroscopy and high-power continuous-wave (CW) diode-pumped laser operation of Er:Yb:YAl3(BO3) crystal. Absorption and stimulated emission spectra, emission lifetimes, and efficiency of energy transfer from Yb3+ to Er3+ ions were determined. A CW Er:Yb:YAB laser emitting at 1602, 1555, and 1531 nm with output power as high as 1W and slope efficiency up to 35% was demonstrated. 相似文献
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A series of highly Er3+/Yb3+ co-doped fluoroaluminate glasses have been investigated in order to develop a microchip laser at 1.54 μm under 980 nm excitation. Measurements of absorption, emission and upconversion spectra have been performed to examine the effect of Er3+/Yb3+ concentration quenching on spectroscopic properties. In the glasses with Er3+ concentrations below 10 mol%, concentration quenching is very low and the Er3+/Yb3+ co-doped fluoroaluminate glasses have stronger fluorescence of 1.54 μm due to the 4I13/2 → 4I15/2 transition than that of Er3+ singly-doped glasses. As Er3+ concentrations above 10 mol% in the Er3+/Yb3+ co-doped samples, concentration quenching of 1.54 μm does obviously occur as a result of the back energy transfer from Er3+ to Yb3+. To obtain the highest emission efficiency at 1.54 μm, the optimum doping-concentration ratio of Er3+/Yb3+ was found to be approximately 1:1 in mol fraction when the Er3+ concentration is less than 10 mol%. 相似文献
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Zhang C Shen DY Wang Y Qian LJ Zhang J Qin XP Tang DY Yang XF Zhao T 《Optics letters》2011,36(24):4767-4769
We report on the efficient operation of a high-power erbium-doped polycrystalline Er:YAG ceramic laser at 1617 nm resonantly pumped by a high-power 1532 nm Er,Yb fiber laser. Lasing characteristics of Er:YAG ceramics with different Er3+ concentrations are evaluated and compared. With an output coupler of 15% transmission and 0.5 at. % Er3+-doped YAG ceramic as the gain media, the laser generates 14 W of output power at 1617 nm for 28.8 W of incident pump power at 1532 nm, corresponding to a slope efficiency with respect to incident pump power of 51.7%. 相似文献
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A novel all fiber cavity Yb3+-doped double-clad fiber laser (DCFL) based on two double-clad fiber (DCF)Bragg grating is presented. The fiber Bragg gratings (FBGs) as the input and output mirrors have been formed in Yb3+-doped DCF with the phase-mask method, and their reflectivities are 99% and 22%,respectively. When the input pump power is 417 mW, the maximum output power is 144 mW with linewidth <0.1 nm at the wavelength of 1.057μm, over 40-dB signal-to-noise ratio (SNR), and 50.8% slope efficiency. 相似文献
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LI Zhaohui 《Chinese Journal of Lasers》2002,11(5):321-323324
A novel Yb3+-doped fiber ring cavity laser pumped by a 977 nm laser diode is presented with its output laser wavelength of 1060 nm. Based on a fiber Bragg grating (FBG), the laser exhibits 0.20 nm line-width, 7.5 mW laser output power, 40 dB signal-to-noise ratio (SNR) and 66% slope efficiency.This paper proposed a ray-tracing model for the Martinez stretcher, derived the calculation formulae for the stretcher of a grating-spherical mirror system and discussed the error for the total dispersion resulted from the spatial dispersion. The calculated results show that the error could be ignored for the beam returned to the stretcher for the second pass in the wavelength range of 750 nm and 850 nm. 相似文献
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Er3+单掺和Er3+/Yb3+双掺铋硼酸盐玻璃的研究 总被引:4,自引:0,他引:4
用高温熔融法制备了Er^3 单掺和Er^3 /Yb^3 双掺铋硼酸盐玻璃样品,测量了上述玻璃样品的吸收光谱,荧光光谱,荧光寿命以及红外透过率。对高浓度掺杂Er^3 的铋硼酸盐玻璃中的浓度猝灭现象作出了解释。分析了Er^3 /Yb^3 双掺铋硼酸盐玻璃样品中Yb^3 离子对Er^3 离子的敏化过程。研究发现Er^3 /Yb^3 双掺铋硼酸盐玻璃在1.5~1.6μm波段有宽达81nm的荧光半峰全宽。实验还发现在熔制过程中通入氧气对其荧光寿命和红外透过率都有明显的提高。由于该玻璃材料表现出较好的物化性能。因此该材料可望成为宽带光纤放大器的适宜的基质材料。 相似文献
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X. F. Yang D. Y. Shen T. Zhao H. Chen J. Zhou J. Li H. M. Kou Y. B. Pan 《Laser Physics》2011,21(6):1013-1016
We report on a high power polycrystalline Er:YAG ceramic laser in-band pumped by a cladding-pumped Er, Yb fiber laser wavelength
locked at 1532 nm with a volume Bragg grating. Using 1.0 at % Er3+-doped ceramic as the gain medium and an output coupler of 10% transmission, the laser had a threshold pump power of ∼1.5
W and generated 11 W of continuous-wave output at 1645 nm for 23.3 W of incident pump power at 1532 nm, corresponding to a
slope efficiency with respect to incident pump power of 51%. 相似文献
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Jackson SD 《Optics letters》2004,29(4):334-336
A high-power tandem-pumped Ho3+, Pr3+-doped ZBLAN fiber laser is demonstrated. Using the free-running 1100-nm output from a diode-cladding-pumped Yb3+-doped silica fiber laser as the pump source, a maximum output power of 2.5 W was generated at a slope efficiency of 29% after the threshold of approximately 30 mW was reached. Saturation of the output is avoided with Pr3+ codoping, which allows single-transition output. The center wavelength of the output was 2.86 microm and the bandwidth at maximum power was approximately 15 nm. 相似文献