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oe1(光电查) - 科学论文

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  • Theoretical research on obtaining of picoseconds dilated pulses with a framing imaged converter tube

    摘要： Variations in the temporal resolution of a pulse-dilation framing imaged converter tube (FICT) were studied. The relation between temporal resolution and dilated pulse was analyzed. The computational methods for describing pulse gradient and time-varying amplitude were derived. It explores the possibility of obtain picoseconds ultrafast pulses and the others potential application FICT from a theoretical perspective. The results show that it is higher precision to achieve the shape and amplitude of an ultrafast dilated pulse using a FICT. The relative standard deviation (RSD) range of ten thousand sample data was 5.8% when the time step is 50 ps, and the RSD is reduced to 1.9% as the time step is shortened to 10 ps. We expect that our results will expand the others potential applications of FICTs and provide that a theoretical basis for further optimizing relevant external systems of FICT.

    关键词： ultrafast diagnostic,picoseconds pulse,pulse-dilation,framing imaged converter tube

    更新于2025-09-23 15:23:52

  • Measurement of electron beam moire fringes with pulsed-dilation framing camera using different lasers

    摘要： The electron beam moire fringe (EBMF) is generated by using a pulse-dilation framing camera. Its characteristics are measured via a nanosecond- and a femtosecond-laser. The wavefront curvature radius of the two lasers is calculated based on the measurement of the EMBF rotation angle and this result is discussed in detail. The experiments show that the EBMF rotation angles measure 31.9° and 16.6°, while the wavefront curvature radii are 12.5 mm and 21.1 mm, when the ns-laser and the fs-laser are used, respectively. This study greatly contributes in the development of EBMF-based technologies and proposes novel application directions for the use of pulse-dilation framing cameras.

    关键词： Electron beam moire fringe,Ultrafast diagnostic techniques,Wavefront curvature radius,Pulse-Dilation framing camera

    更新于2025-09-12 10:27:22