Optical time division multiplexing: a powerful technique for experimental 
investigations of spatiotemporal dynamics

Joly, Nicolas; Derozier, Dominique; Razdobreev, Igor; Bielawski, Serge

doi:10.1016/S0030-4018(03)01607-9

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Optical time division multiplexing: a powerful technique for experimental investigations of spatiotemporal dynamics

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https://www.sciencedirect.com/science/article/pii/S0030401803016079
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Citation

Joly, N., Derozier, D., Razdobreev, I., & Bielawski, S. (2003). Optical time division multiplexing: a powerful technique for experimental investigations of spatiotemporal dynamics. Optics Communications, 223, 181-185. doi:10.1016/S0030-4018(03)01607-9.

Cite as: https://hdl.handle.net/21.11116/0000-000F-C3AE-1

Abstract

We show that fast and complex spatio-temporal dynamics of pulsed lasers or OPOs can be recorded using a simple and low-cost technique. The system is based on the well-known principle of time-division multiplexing currently used in telecommunications, and is composed of a set of fibers, conventional photodiodes, and an oscilloscope. The resolution is typically limited by the ratio between the oscilloscope sampling rate and the pulse repetition rate. We have tested this technique on a femtosecond titanium:sapphire laser. This allowed us to observe in real time the irregular displacement of one-dimensional cuts of the output beam (every 12 ns), a process that has been studied up to now only by indirect means. This device can be potentially extended to non-mode-locked sources.