Time-space conversion for short pulse generation with a long lifetime phosphor

Mitsunori Saito; Shingo Nakamura

doi:10.1117/12.981657

18 December 2012 Time-space conversion for short pulse generation with a long lifetime phosphor

Mitsunori Saito, Shingo Nakamura

Proceedings Volume 8550, Optical Systems Design 2012; 85502Y (2012) https://doi.org/10.1117/12.981657
Event: SPIE Optical Systems Design, 2012, Barcelona, Spain

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.

Citation Download Citation

Mitsunori Saito and Shingo Nakamura "Time-space conversion for short pulse generation with a long lifetime phosphor", Proc. SPIE 8550, Optical Systems Design 2012, 85502Y (18 December 2012); https://doi.org/10.1117/12.981657

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