双波长皮秒脉冲与可调谐脉宽产生的实验研究 |
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引用本文: | 郭志华,罗春娅,李丹,凌福日. 双波长皮秒脉冲与可调谐脉宽产生的实验研究[J]. 激光技术, 2016, 40(1): 109-112. DOI: 10.7510/jgjs.issn.1001-3806.2016.01.024 |
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作者姓名: | 郭志华 罗春娅 李丹 凌福日 |
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作者单位: | 1.华中科技大学光学与电子信息学院武汉光电国家实验室, 武汉 430074; |
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基金项目: | 中国工程物理研究院太赫兹科学技术基金资助项目,湖北省自然科学基金资助项目 |
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摘 要: | 为了提高多波长光脉冲设备的实用性,采用双波长工作原理,设计了一种稳定的双波长半导体环形光纤激光器。讨论了环形腔色散、滤波器脉宽以及调制深度等对输出脉冲的影响。结果表明,双波长光脉冲的重复率为5.0GHz,典型脉宽为20ps,双波长光脉冲具有良好的边模抑制比,当输出波长为1554.75nm和1557.21nm时,边模抑制比分别为29.1dB和29.7dB,其典型的输出功率分别为-6.7dBm和-6.1dBm,输出光谱的峰值功率波动小于0.5dB。这项研究对太赫兹源和多波长光脉冲设备的研究具有借鉴意义。
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关 键 词: | 激光器 双波长 主动锁模 半导体光放大器 |
收稿时间: | 2014-11-05 |
Experimental study about generation of picosecond pulses with dual-wavelengths and tunable pulse-widths |
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Abstract: | In order to improve the practicability of multi-wavelength optical pulse equipment , a stable dual-wavelength semiconductor fiber ring laser was proposed and demonstrated by using dual-wavelength principle . Effects of ring cavity dispersion, filter pulse-width and modulation depth on output pulse were discussed .Experimental results are that repetition rate of dual-wavelength pulses is 5.0GHz and typical pulse-width is 20ps.Dual-wavelength pulses have good side-mode suppression ratios of 29.1dB ( at 1554.75nm) and 29.7dB ( at 1557.21nm) with typical output powers of -6.7dBm and -6.1dBm respectively.Output spectra are very stable with peak power fluctuation less than 0.5dB.This study is of great significance for the study of terahertz source and multi-wavelength optical pulse equipment . |
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Keywords: | lasers dual-wavelength actively mode-locked semiconductor optical amplifier |
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