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Proceedings Paper

Time-space conversion for short pulse generation with a long lifetime phosphor
Author(s): Mitsunori Saito; Shingo Nakamura
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Paper Abstract

An optical system was designed and fabricated to achieve signal wavelength conversion. Although a rare-earth doped phosphor was useful to achieve the infrared-to-visible conversion, its long-lasting phosphorescence prevented high-frequency modulation. This problem was solved by using a time-space conversion method, in which a phosphorescent disk was rotated to attain the fast-response wavelength conversion. When an infrared pulse train with 500-ns duration and 1-MHz repetition rate was focused on the rotating disk, phosphorescent dots were created along the disk periphery. By detecting the phosphorescence at a downstream position of the dot trajectory, a visible signal of 1 MHz was observed.

Paper Details

Date Published: 18 December 2012
PDF: 11 pages
Proc. SPIE 8550, Optical Systems Design 2012, 85502Y (18 December 2012);
Show Author Affiliations
Mitsunori Saito, Ryukoku Univ. (Japan)
Shingo Nakamura, Ryukoku Univ. (Japan)

Published in SPIE Proceedings Vol. 8550:
Optical Systems Design 2012
Laurent Mazuray; Daniel G. Smith; Jean-Luc M. Tissot; Tina E. Kidger; Frank Wyrowski; Stuart David; Rolf Wartmann; Jeffrey M. Raynor; Andrew P. Wood; Pablo Benítez; Andreas Erdmann; Marta C. de la Fuente, Editor(s)

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