共查询到20条相似文献,搜索用时 31 毫秒
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采用准分子激光器成功地在低掺杂普通铒纤上制作出5 cm的光纤光栅分布反馈布拉格(DFB)激光器,铒纤的峰值吸收率为5 dB/m,在100 mW,980 nm抽运光条件下,光纤激光器的输出功率为50μW,边模抑制比为50 dB。使用耦合模理论分析了一段5 cm带相移的分布反馈布拉格光纤激光器输出光强同腔内损耗及相移量的关系,计算结果表明,光纤腔内的损耗对激光器的输出具有非常重要的影响,大的损耗对应获得最大功率的光栅耦合强度相应减小,因此,在低掺杂铒纤上制作分布反馈布拉格激光器必须正确估计光纤激光器的腔内损耗,选择合适的光栅耦合强度,可以获得较大的输出功率。 相似文献
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QIAN Jing-ren SU Jue WANG Xu-xu ZHU Bing 《光电子快报》2007,3(1):34-36
Rare Er-doped fiber lasers have been studied for fibe sensor applications with the advantage of frequency readou [1,2]. Due to this advantage, gyroscope application for a bidi rectional Er-doped fiber-ring laser was also demonstrated They also have high s… 相似文献
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We present multiwavelength and bidirectional operation of a novel Brillouin/erbium fiber ring laser. Multiwavelength operation is seeded by an Er3+:Yb3+ fiber distributed-feedback (DFB) laser inserted into the ring cavity. We realized lasing at up to eight wavelengths separated by 10.6 GHz 相似文献
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一种频率可调的光学生成微波毫米波源 总被引:2,自引:1,他引:1
实现了一种频率可调的光纤微波毫米波信号源.利用掺饵光纤(EDF)环形腔中的偏振烧孔(PHB)效应和激光反向传播的特点,在室温下得到了波长间隔可调的稳定的单频单纵模双波长激光器,将两束激光在PIN光电二极管中拍频得到了频率在472.5MHz~26.5GHz间变化的毫米波信号,输出功率不小于0.015mW,3dB带宽约为3... 相似文献
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Ming Ding P.K. Cheo 《Photonics Technology Letters, IEEE》1996,8(9):1151-1153
For Er-doped fiber lasers, we show that the fluctuation of lasing power caused by resonant pump-power perturbations is inversely proportional to the lifetime of photon in the laser cavity. Analysis shows that Er-doped fibers with high-gain coefficient are favorable for fiber lasers in the view of point of suppressing the lasing-power instability caused by the resonant pump perturbation. The results obtained are especially useful for single-frequency Er-doped fiber lasers which have a very short cavity length, i.e., a short lifetime of photon in the cavity. 相似文献
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We demonstrate stable single-mode CW operation of a DFB ring laser based on Er3+ doped photonics crystal fiber (PCF). The incorporation of a ring cavity allows one single mode to lase and also suppresses the unwanted effect of self-pulsing. Such a narrow linewidth source in PCF has great potential in spectroscopy. 相似文献
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The report the observation of self-mode-locked laser pulses from in-line coupled-cavity (ILCC) fiber lasers, consisting of an optically pumped Er-doped fiber main cavity and an auxiliary Si fiber cavity formed by using three intra-core Bragg gratings. Mode-locked pulses at a repetition rate of 100 MHz have been obtained with an input pump threshold as low as 10 mW 相似文献
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Single-polarization operation of fiber distributed feedback (DFB)lasers by injection locking 总被引:2,自引:0,他引:2
This paper investigated injection locking characteristics of a fiber distributed feedback (DFB) laser operating in dual polarizations, and found that it could operate in a single polarization by injection locking. The locking bandwidth was less than 10 MHz, much narrower than DFB laser diodes as a consequence of longer cavity length and resulting longer photon lifetime. As a more practical method to realize single-polarization operation of the fiber DFB laser, we proposed self-injection locking with a polarization-selective optical feedback composed of a mirror and a polarizer, and demonstrated a stable single-polarization operation 相似文献
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采用未泵浦掺铒光纤作为饱和吸收体压缩线宽,窄带高反光纤光栅作为波长选择器件,通过偏振控制器和偏振相关隔离器控制环形腔中行波的偏振态,利用反馈电路控制980 nm泵浦源的输入电流,以减小铒离子的弛豫振荡对光强波动带来的影响。研制的光纤激光器线宽小于8 kHz,相对强度噪声(RIN)10 kHz内小于-100dB/Hz,1 kHz处1 m程差干涉仪的相位噪声小于-120 dB/(Hz)1/2,长时间监测无跳模现象,输出激光功率稳定。 相似文献
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一种实用化的高功率低噪声波长连续可调光纤激光器 总被引:5,自引:4,他引:1
报道了一种基于光纤光栅 (FBG)的高功率可调谐环形腔掺铒光纤激光器。该激光器由 980nm激光二极管(LD)抽运 ,在 15 6 2nm波段获得了线宽小于 0 0 4nm的激光输出 ,调谐范围可达 4 6nm ,输出波长复现性误差小于 0 0 8nm。由于铒光纤选择了最佳长度 ,并在光纤环路中引入两个隔离器抑制噪声 ,提高了信噪比 ,激光器输出的最大功率可达 4 2 8mW ,此时功率稳定性为± 0 0 3dB ,斜率效率为 7 3%。 相似文献
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Mode-locked pulses with durations adjustable from 200 ps to less than 50 ps were generated by current modulation of a 1.48 μm pump laser diode incorporated in an Er-doped fiber laser cavity. The laser diode exhibits sufficient phase modulation without degradation in pump ability, and thus demonstrates a very practical and simple approach to optical pulse generation 相似文献
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Hernandez-Cordero J. Kozlov V.A. Carter A.L.G. Morse T.F. 《Photonics Technology Letters, IEEE》1998,10(7):941-943
Single- and dual-wavelength tunable lasing (around 1552 nm) has been obtained in an Er-doped low-Bi fiber laser with a Bragg grating mirror in a Hi-Bi fiber. Equal output powers for both laser lines and spectral spacing of up to 0.26 mm, larger than the original spacing between the resonance peaks of the grating (0.2 nm), can be easily achieved by employing a polarization controller inside of the laser cavity 相似文献
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