| Realtime correction of probe pulse in subpicosecond time-resolved transient absorption spectroscopy | |
| ZhangSu-Juan; DuanCun-Li; FengXiao-Qiang; HeJun-Fang; Zhang Sujuan | |
| 2011 | |
| 会议名称 | International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging |
| 会议录名称 | Proceedings of SPIE - The International Society for Optical Engineering |
| 页码 | 81923P |
| 会议日期 | May 24, 2011 - May 26, 2016 |
| 会议地点 | Beijing, China |
| 出版地 | P.O. Box 10, Bellingham, WA 98227-0020, United States |
| 出版者 | SPIE |
| 会议主办者 | Chinese Society of Astronautics (CAS) |
| 产权排序 | 3 |
| 摘要 | Due to its breakthrough the electro-optical time response limitation for picosecond dynamics of processes, many research groups around the world operating in different fields from physics and chemistry to biology, medicine and material science, utilize laser setups capable of providing subpicosecond pulses and femtosecond-level time delay lines. However the signal amount of Femto-picosecond Dynamics is about at an altitude of 1%, but the fluctuation of femtosecond probe pulse at its best can only reach about 5%. Real-time correct the probe pulse is the only effective way to realize subpicosecond time-resolved detection precision of transient absorption spectroscopy. So in this paper, reference pulse was drawn into the measurement equipment through different methods to dispel the fluctuation of probe pulse. Firstly, in the case of Subpicosecond time-resolved transient absorption spectroscopy, probe and reference beams have the same spectral distribution and derived from the same source to measure the variation of transmittance in the excited volume. Secondly probe pulse is spatially and temporally overlapped to the excitation pulse, reference pulse spatially overlapped but temporally anticipated in respect to the excitation pulse. Finally reference pulse passes through the sample in a different position. The detector can be a CCD camera or a double photodiode. The results shown that when reference pulse passes through the sample in a different position and detected by CCD, the correction results can reach to 1%. Which meet the femto-picosecond dynamics precise requirement. |
| 关键词 | Realtime Correction Probe Pulse Reference Pulse Subpicosecond Time-resolved Transient Absorption Spectroscopy |
| 作者部门 | 瞬态光学国家重点实验室 |
| 收录类别 | EI |
| 语种 | 英语 |
| ISSN号 | 0277-786X |
| 文献类型 | 会议论文 |
| 条目标识符 | http://ir.opt.ac.cn/handle/181661/20192 |
| 专题 | 瞬态光学研究室 |
| 通讯作者 | Zhang Sujuan |
| 推荐引用方式 GB/T 7714 | ZhangSu-Juan,DuanCun-Li,FengXiao-Qiang,et al. Realtime correction of probe pulse in subpicosecond time-resolved transient absorption spectroscopy[C]. P.O. Box 10, Bellingham, WA 98227-0020, United States:SPIE,2011:81923P. |
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