| 块状介质超连续谱相位的相干特性 |
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| 引用本文： | 张颖,魏晓峰,朱启华,曾小明,应纯同,邓颖,王凤蕊.块状介质超连续谱相位的相干特性[J].强激光与粒子束,2007,19(2):211-214. |
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| 作者姓名： | 张颖 魏晓峰 朱启华 曾小明 应纯同 邓颖 王凤蕊 |
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| 作者单位： | 1. 清华大学 工程物理系， 北京 100084；2. 中国工程物理研究院 激光聚变研究中心， 四川 绵阳 621900 |
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| 摘 要： | 块状介质超连续谱由一系列复杂的非线性过程产生。用两路飞秒泵浦光聚焦到熔石英玻璃上得到两束独立的超连续谱，实验上观察到它们形成的稳定干涉条纹；改变两路泵浦光的时间延迟，得到共线超连续谱形成的频率梳。实验证明，块状介质超连续谱的产生保持了泵浦光的相位锁定关系，泵浦光能量抖动和介质的缺陷都不会对超连续谱的相位带来明显的扰动。
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| 关 键 词： | 飞秒激光 超连续谱 相位相干 频率梳 块状介质 |
| 文章编号： | 1001-4322(2007)02-0211-04 |
| 收稿时间： | 2006/9/11 |
| 修稿时间： | 2006-09-11 |
Supercontinuum phase coherence properties in bulk material |
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| ZHANG Ying,WEI Xiao-feng,ZHU Qi-hua,ZENG Xiao-ming,YING Chun-tong,DENG Ying,WANG Feng-rui.Supercontinuum phase coherence properties in bulk material[J].High Power Laser and Particle Beams,2007,19(2):211-214. |
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| Authors: | ZHANG Ying WEI Xiao-feng ZHU Qi-hua ZENG Xiao-ming YING Chun-tong DENG Ying WANG Feng-rui |
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| Institution: | 1. Department of Engineering Physics, Tsinghua University, Beijing 100084, China;2. Research Center of Laser Fusion, CAEP, P.O. Box 919-988, Mianyang 621900, China |
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| Abstract: | Supercontinuum generation incorporates many nonlinear effects.In our experiment,two supercontinuum pulses generated independently by ultrashort pulses form stable spatial interference fringes and a frequency comb appears with collinear time-delay pump pulses.The supercontinuum keeps phase-lock relationships of the pump beams.Small intensity variations in the pump and small inhomogeneities in the material do not lead to dramatic phase fluctuations in the generated supercontinuum.It is important for supercontinuum simulation and studying of supercontinuum frequency combs in bulk material. |
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| Keywords: | Femtosecond laser Supercontinuum Phase coherence Frequency comb Bulk material |
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