共查询到19条相似文献,搜索用时 109 毫秒
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环形腔掺铒光纤激光器的实验研究 总被引:3,自引:0,他引:3
利用掺饵光纤和环形腔结构,在980nm半导体激光器泵浦下,获得了1.56μm波长的光纤激光器输出。激光器的阈值泵浦功率为5.2mW。具有很好的线性输出特性。 相似文献
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本文报道利用自己研制的长波段钛宝石激光器在1017nm、980nm、1020nm、1220nm等泵浦波长上研究国产掺Pr^3+氟化物光纤的吸收特性和荧光特性,得到了荧光峰值波长和最佳泵浦波长,并进行分析讨论。 相似文献
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掺Yb^3+石英光纤的制备及其激光性能 总被引:3,自引:0,他引:3
本文首次在国内报道了用MCVD工艺研制出两种结构的掺Yb^3+石英光纤,包括简单梯度掺Yb^3+单模石英光纤和双包层结构掺Yb^3+石英光纤。在掺Yb^3+光纤激光实验中,实现了1030nm的激光输出,输出功率达到45mW以上,斜率效率达到68%,在掺Yb^3+光纤放大器中,1053nm波长小信号增益达到了15dB。 相似文献
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环形腔Yb光纤激光器获得1.053μm激光输出 总被引:1,自引:0,他引:1
《中国激光》1999,(1)
我们用国产Yb硅光纤研制的激光器获得了1.053μm激光输出。激光器使用环形腔,用波分复用器把光纤连接而成。波分复用器的隔离比980nm/1053nm=18dB。光纤的芯径为6μm,在920nm处的吸收为6600dB/km,截止波长860nm,光纤长... 相似文献
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报道了以980nm钛宝石激光端面泵浦室温连续1.535μmEr:Yb磷酸盐玻璃薄片激光器。实验上研究了950-988nm泵浦波长范围内激光输出特性,结果表明,975nm为最佳泵浦波长。在975nm泵浦下,实现了5mW低阈值起振和21%的光-光转换效率;最大单频线偏振输出功率达22mW。同时,观察并分析了高泵浦条件下输出激光的偏振与纵横性质,以及由泵浦吸收饱和而引起的输出功率饱和效应。 相似文献
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一种高性能环形可调谐光纤光栅激光器研究 总被引:1,自引:0,他引:1
研制了一种新型的高性能环形可调谐光纤光栅激光器。该激光器使用980nm LD作为泵浦源,使用长度为10. 8m的新型增益平坦掺铒光纤作为增益介质,采用可调谐光纤光栅滤波器进行波长调谐,调谐范围可达41nm (1528nm~1569nm) ,中心波长可精确调谐到C波段指定的ITU - T标准中心波长处, 3dB 带宽< 0. 08nm, 25dB带宽< 0. 2nm,波长稳定性优于0. 01nm,边模抑制比> 60dB。最大输出功率46. 94mW,功率稳定性优于±0. 02dB,阈值泵浦功率7. 3mW,斜率效率为39. 75%。并分析了不同腔长、不同输出耦合比对输出功率的影响。 相似文献
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In this paper, a high-power erbium-doped fiber amplifier (EDFA) for the temperature sensor system is theoretically designed and experimentally demonstrated. It consists of an erbium-doped fiber that is pumped bidirectionally with two 980-nm high-power laser diodes (LDs). At the EDFA input, an optical isolator (ISO) is used to ensure that the signal pulse transmits forward only. After that, a wavelength division multiplexer (WDM) is employed to combine the forward pump laser (980 nm) and incident optical pulse (1550nm) into the erbium-doped fiber for direct amplification in the optical domain. At the EDFA output, another WDM couples the backward pump laser (980 nm) into the erbium-doped fiber and outputs the amplified optical pulse (1550 nm) with an ISO followed to isolate the backscattering light. According to this structure, we carried out the experiment in the condition as follows. For 980 nm pump LD, the operating current is 590 mA, and the setting temperature is 25℃. For EDFA, the length of erbium-doped fiber is 12.5 m, and the power of 1550 nm input signal is 1.5 mW. As a result, the power of pump LD is 330 mW, and the power uncertainty is 0.5%. The power of EDFA output at 1550 nm is 300 mW, and the power uncertainty is ±3 mW. 相似文献
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为了获得窄线宽、高功率、长波长(相对于1030nm~1080nm)的1120nm光纤激光器,采用普通单模掺镱光纤和一对光纤布喇格光栅构建了该光纤激光器的谐振腔,为保证抽运光的完全吸收和避免非线性效应,对有源光纤的最佳长度进行了理论分析和实验验证。结果表明,激光器的阈值抽运功率为40mW、注入抽运功率为265mW时,激光器输出信号光功率35mW,光光转换效率为13.2%,激光器中心波长为1120.9nm,输出激光的谱线宽度为0.03nm。这种激光器的获得是因为采用了高反射率耦合输出光纤布喇格光栅、短谐振腔结构和低功率运转状态。该激光器可作为种子光注入光纤放大器。 相似文献
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布里渊掺铒光纤激光器(BEFL)是一种利用非线性效应——布里渊散射来实现多波长输出的激光器,波长间隔大约为0.088 nm(11 GHz).研究了一种多波长布里渊掺铒光纤激光器线形结构,通过引入反馈实现多波长输出.在布里渊泵浦功率为11 mW,980 nm泵浦功率为12 mW时获得了波长间隔为0.08 nm的34个波长的激光输出以及1 525~1 570 nm可调谐范围.并通过调节980 nm抽运光功率以及布里渊泵浦光波长,实现了可调谐的多波长输出.还研究了980 nm抽运光功率对产生的斯托克斯光波数的影响. 相似文献
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Double-pass forward and double-pass backward erbium-doped super-fluorescent fiber sources(EDSFSs) were combined in one configuration.A 980 nm laser diode pumped the same erbium-doped fiber from both directions using a coupler as a power splitter.The double-pass configuration was achieved by coating the fiber end face.Firstly,an optimal fiber length was found to obtain a high stability of output light wavelength with pump power, and then 1530/1550 nm wavelength division multiplexing was used for spectrum planarization,which expanded the bandwidth to more than 22 nm.The final step was a test of temperature stability.The results show that the rate of the central wavelength change kept to below 3.5 ppm/℃in the range of -40 to 60℃and 1-2 ppm/℃in the range of 20-30℃.Considering all the three factors of the fiber optic gyro applications,we selected 80 mA as the pump current,in which case the central wavelength temperature instability was calculated as 2.70 ppm/℃, 3 dB bandwidth 22.85 nm,spectral flatness 0.2 dB,output power 5.17 mW and power efficiency up to 9.92%.This experimental result has a significant reference value to the selection of devices and proper design of ED-SFSs for the application of high-precision fiber optic gyroscopes. 相似文献