| 钛宝石飞秒激光器用色散补偿Gires-Tournois镜的研究 |
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| 引用本文： | 马群,章岳光,沈伟东,罗震岳,张青,张淑娜,叶蓬,袁文佳,刘旭,魏志义.钛宝石飞秒激光器用色散补偿Gires-Tournois镜的研究[J].物理学报,2011,60(2):27804-027804. |
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| 作者姓名： | 马群 章岳光 沈伟东 罗震岳 张青 张淑娜 叶蓬 袁文佳 刘旭 魏志义 |
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| 作者单位： | (1)浙江大学现代光学仪器国家重点实验室,杭州 310027; (2)中国科学院物理研究所光物理重点实验室,北京 100190 |
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| 基金项目： | 国家自然科学基金(批准号:60708013,60608014)资助的课题. |
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| 摘 要： | 根据钛宝石飞秒激光器的色散补偿要求设计了单次反射平均补偿量为-60 fs2的GT(Gires-Tournois)镜,采用离子束辅助沉积技术结合光学监控技术制作了器件.用分光光度计对650—950 nm波段薄膜反射率进行测试,结果表明反射率测试曲线与设计曲线十分符合,同时利用白光干涉系统对群延迟色散进行了测试,测试结果与设计符合得很好,实际的色散曲线振荡基本控制在±20 fs2以内.应用该GT镜进行钛宝石飞秒激光系统的色散补偿,取得了很好的锁模效果,得到了29 fs的超短脉冲.
关键词：
色散补偿
钛宝石飞秒激光器
GT镜
离子束辅助沉积
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| 关 键 词： | 色散补偿 钛宝石飞秒激光器 GT镜 离子束辅助沉积 |
| 收稿时间： | 2010-04-14 |
| 修稿时间： | 5/4/2010 12:00:00 AM |
A Gires-Tournois mirror for dispersion compensation in the Ti-sapphire laser system |
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| Ma Qun,Zhang Yue-Guang,Shen Wei-Dong,Luo Zhen-Yue,Zhang Qing,Zhang Shu-Na,Ye Peng,Yuan Wen-Jia,Liu Xu,Wei Zhi-Yi.A Gires-Tournois mirror for dispersion compensation in the Ti-sapphire laser system[J].Acta Physica Sinica,2011,60(2):27804-027804. |
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| Authors: | Ma Qun Zhang Yue-Guang Shen Wei-Dong Luo Zhen-Yue Zhang Qing Zhang Shu-Na Ye Peng Yuan Wen-Jia Liu Xu Wei Zhi-Yi |
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| Institution: | State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027,China;State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027,China;State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027,China;State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027,China;Laboratory of Optical Physics,Institute of Physics, Chinese Academy of Sciences, Beijing 100190,China;State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027,China;Laboratory of Optical Physics,Institute of Physics, Chinese Academy of Sciences, Beijing 100190,China;State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027,China;State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027,China;Laboratory of Optical Physics,Institute of Physics, Chinese Academy of Sciences, Beijing 100190,China |
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| Abstract: | A Gires-Tournois(GT) mirror with a group delay dispersion (GDD) of -60 fs2 in one reflection was designed according to the requirement of dispersion compensation in the Ti-sapphire femtosecond laser system. It was manufactured by ion assisted deposition combined with the optical monitoring in transmission. The reflectance of the mirror was measured by a spectrophometer working in the range from 650 nm to 950 nm with a resolution of 1 nm. The results were consistent with the design. Furthermore, a home-made white light interferometry system was employed to test the reflection GDD and the result also agreed well with the design. The experimental GDD oscillation was less than ± 20 fs2. The GT mirror was applied in the Ti-sapphire femtosecond laser system and a good clamping result was obtained. Finally a 29 fs ultra-short pulse was acquired. |
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| Keywords: | dispersion compensation Ti-sapphire femtosecond laser system Gires-Tournois mirror ion assisted deposition |
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