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Titolo
Self-calibrating d-scan: measuring ultrashort laser pulses on-target using an arbitrary pulse compressor
Autor(es)
Soggetto
Optical metrology
Ultrafast lasers
Ultrafast photonics
Clasificación UNESCO
2214.02 Metrología
2212.11 Fotones
2209.10 láseres
Fecha de publicación
2018
Editore
Nature Publishing Group (Londres, Gran Bretaña)
Citación
Alonso, B., Sola, I., Crespo, H. (2018). Self-calibrating d-scan: measuring ultrashort laser pulses on-target using an arbitrary pulse compressor. Scientific Reports, 3264 (8)
Resumen
[EN]In most applications of ultrashort pulse lasers, temporal compressors are used to achieve a desired
pulse duration in a target or sample, and precise temporal characterization is important. The dispersionscan
(d-scan) pulse characterization technique usually involves using glass wedges to impart variable,
well-defined amounts of dispersion to the pulses, while measuring the spectrum of a nonlinear signal
produced by those pulses. This works very well for broadband few-cycle pulses, but longer, narrower
bandwidth pulses are much more difficult to measure this way. Here we demonstrate the concept of
self-calibrating d-scan, which extends the applicability of the d-scan technique to pulses of arbitrary
duration, enabling their complete measurement without prior knowledge of the introduced dispersion.
In particular, we show that the pulse compressors already employed in chirped pulse amplification (CPA)
systems can be used to simultaneously compress and measure the temporal profile of the output pulses
on-target in a simple way, without the need of additional diagnostics or calibrations, while at the same
time calibrating the often-unknown differential dispersion of the compressor itself. We demonstrate
the technique through simulations and experiments under known conditions. Finally, we apply it to the
measurement and compression of 27.5 fs pulses from a CPA laser.
URI
DOI
10.1038/s41598-018-21701-6
Versión del editor
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- ALF. Artículos [303]