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Proceedings Paper

A Single-Shot Measurement Of A Picosecond Optical Pulse Waveform
Author(s): Ryuji Koga; Masami Ebara,; Megumi Kosaka; Hiroya Sano
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Paper Abstract

A waveform monitoring for a picoseconds-width, single-shot optical pulse is possible with optical circuit of optical fibers and LiTaO3 Pockel's cell. This method is based on having cross correlation integral between delayed signals and a single step function. The inquired waveform is reproduced by a deconvolution. The principle can be implemented by four fundamental functions, branching to make replicas of a source signal, delay, optical gate, and time integration. Optical fibers were employed as delay lines whose delay time is controlled by their length. A small cylindrical lens was used for the branching from a single optical fiber to a bundle of fibers as delay lines. The optical gate is composed of a LiTaO3 Pockel's cell which is driven by a specifically manufactured optoelectronic switch. The time integration is achieved by photodiodes whose electric charge output is proportional to the energy, a time integral of temporal power,of the incident optical pulse. Experiments were made for a 2ns FWHM optical pulse of a dye laser, which demonstrates the expected ability. Very fast A/D conversion for a picosecond optical pulse waveform is basically possible, which is more profittable than a pure electronic metnod.

Paper Details

Date Published: 15 May 1981
PDF: 9 pages
Proc. SPIE 0236, 1980 European Conf on Optical Systems and Applications, (15 May 1981); doi: 10.1117/12.959039
Show Author Affiliations
Ryuji Koga, Okayama University (Japan)
Masami Ebara,, Okayama University (Japan)
Megumi Kosaka, Okayama University (Japan)
Hiroya Sano, Okayama University (Japan)

Published in SPIE Proceedings Vol. 0236:
1980 European Conf on Optical Systems and Applications
D. J. Kroon, Editor(s)

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