Scalogram Measurement System of Ultrashort Optical Pulse Using Femtosecond Pulse Laser

飞秒脉冲激光器超短光脉冲尺度图测量系统

• 批准号: 13555014
• 负责人: ICHIOKA Yoshiki
• 金额: $ 8.9万
• 依托单位: NARA NATIONAL COLLEGE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13555014/
• 关键词: Optical scalogram; Wavelet transform; Ultrashort optical pulse; Ultrafast time-resolved spectroscopy

The object of this research is to develop the new optical method that can directly and simultaneously measure and analyze the relation among time, space and temporal frequency of ultrashort optical pulse as a scalogram, and to design and construct a new optical system capable of realizing such ultrafast measurement and analysis of scalogram.For this purpose, we designed and constructed a new optical system which was able to achieve multi-resolutional analysis by using wavelet transform. In the developed system, wavelet transform of an ultrashort pulse is optically achieved, and retrieval of profiles of various signals is attained with electronic post calculation. To verify the ability of the developed system, we attempted several experiments.Through experimental results, we confirmed that the proposed system can measure scalogram of an femtosecond ultrashort pulse. To demonstrate the capability of the constructed system, we acquire several multi-resolutional scalograms, changing either temporal resolution or spectral one. From the results of this research, we can obtain the important knowledge that the developed system would work as an ultrafast processor for scalogram and would be useful tool for measurement and analysis of ultrashort optical pulses.

本研究的目的是发展一种能直接同时测量和分析超短光脉冲作为尺度图的时间、空间和时间频率之间关系的新的光学方法，并设计和构造一种能实现这种尺度图的超快测量和分析的新的光学系统。我们设计并构造了一个新的光学系统，它能够利用小波变换实现多分辨率分析。在所开发的系统中，光学实现了超短脉冲的小波变换，并通过电子后计算实现了各种信号轮廓的检索。为了验证该系统的测量能力，我们进行了多次实验，实验结果表明，该系统可以测量飞秒超短脉冲的尺度图。为了证明所构建的系统的能力，我们获得了几个多分辨率尺度图，改变时间分辨率或光谱分辨率。从本研究的结果中，我们可以得到重要的知识，开发的系统将工作作为一个超快速处理器的尺度图，将是有用的工具，用于测量和分析超短光脉冲。

项目成果

Y.Oshida, Y.Iwahashi, K.Iwata: "Measurement of spatial differentiation of displacement using a phase-shifting speckle shearing interferometer"Proc. SICE Annual Conference 2002. 585-589 (2002)

Y.Oshida、Y.Iwahashi、K.Iwata：“使用相移散斑剪切干涉仪测量位移的空间微分”Proc。

T.Konishi, K.Tanimura, Y.Oshita, Y.Ichioka: "All optical analog-to-digital converter by using self-frequency shift in fiber and pulse shaping technique"J. Opt. Soc. Am. B. 19・12. 2817-2822 (2002)

T.Konishi、K.Tanimura、Y.Oshita、Y.Ichioka：“使用光纤自频移和脉冲整形技术的全光学模数转换器”J. 12. 2817-2822 (2002)

T. Konishi, K. Tanimura, and Y. Ichioka: "Optical Spectrogram Measurement of Ultrashort Pulse in Communication Band by Optical Spectrogram Scope (OSS)"Proc. FST 2002. No.9. 120 (2002)

T. Konishi、K. Tanimura 和 Y. Ichioka：“通过光谱图范围 (OSS) 进行通信频段超短脉冲的光谱图测量”Proc。

K. Tanimura, M. Yu, T. Konishi, and Y. Ichioka: "Amplitude and phase analyses of ultrashort pulse by using optical spectrogram scope (OSS)"Proc. 7th OECC 2002. No.7. 230-231 (2002)

K. Tanimura、M. Yu、T​​. Konishi 和 Y. Ichioka：“使用光学频谱仪 (OSS) 进行超短脉冲的幅度和相位分析”Proc。

K.Tanimura, M.Yu, T.Konishi, Y.Ichioka: "Amplitude and phase analyses of ultrashort pulse by using Optical Spectrogram Scope (OSS)"Proc.of the 7th OECC 2002. 7. 230-231 (2002)

K.Tanimura、M.Yu、T.Konishi、Y.Ichioka：“使用光谱仪 (OSS) 进行超短脉冲的幅度和相位分析”Proc.of the 7th OECC 2002. 7. 230-231 (2002)