| 888nm半导体抽运的60W皮秒激光振荡器模型 |
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| 引用本文： | 彭润伍,唐立军,李亚捷,伍冠洪,唐俊龙.888nm半导体抽运的60W皮秒激光振荡器模型[J].激光技术,2011,35(1):51-53. |
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| 作者姓名： | 彭润伍 唐立军 李亚捷 伍冠洪 唐俊龙 |
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| 作者单位： | 1.长沙理工大学物理与电子科学学院, 长沙 410114; |
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| 基金项目： | 自然科学重点基金;863项目;北京市优秀博士论文资助项目 |
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| 摘 要： | 为了建立一个基于888nm半导体抽运的高平均功率和高效率皮秒激光振荡器的理论模型,采用模拟计算方法和谐振腔理论、ABCD定律、自洽条件以及连续被动锁模条件,利用激光晶体Nd:YVO4对波长888nm半导体抽运源的吸收特性和元件的相关参量、合适的腔模参量、实现稳定锁模的参量进行了理论分析和计算,并通过以上研究和模拟计算得到了皮秒振荡器模型的相关数据。结果表明,在120W的抽运功率下,激光器可以输出约61.5W的皮秒激光,光光转换效率51.3%。这一理论模型的建立对高平均功率和高效率皮秒激光振荡器的实验研究起着指导作用。
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| 关 键 词： | 激光器 模型 计算模拟 谐振腔 |
| 收稿时间： | 2010-01-07 |
| 修稿时间： | 2010-04-14 |
Model of 60 W picosecond laser oscillator pumped by 888 nm LD |
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| PENG Run-wu,TANG Li-jun,LI Ya-ji,WU Guan-hong,TANG Jun-long.Model of 60 W picosecond laser oscillator pumped by 888 nm LD[J].Laser Technology,2011,35(1):51-53. |
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| Authors: | PENG Run-wu TANG Li-jun LI Ya-ji WU Guan-hong TANG Jun-long |
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| Abstract: | In order to reduce the impact of fiber chromatic dispersion for the transmission performance of OFDMF system, the channel estimator was introduced into the system. The influence of fiber chromatic dispersion for OFDM signals transmission in optical fiber was theoretically investigated. And the performance of OFDMF system by using a channel estimator based on combined pilots and the Least Square Estimation was demonstrated in the experiment. The amplitude response and phase response for the OFDMF system showed that the optical OFDM signal modulated by using a direct modulator can transmit 200km in the single-mode dispersion fiber. The bit error rate was less than 10-6 and the power penalty was smaller than 2dB.The results obtained here showed that fiber chromatic dispersion had a stronger impact on high frequency subcarrier than low frequency subcarrier. The method proposed can effectively compensate the phase shift and amplitude attenuation caused by fiber chromatic dispersion. |
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| Keywords: | Optical Communication OFDM Dispersion Compensation Channel Estimation |
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