Journal
OPTICS EXPRESS
Volume 28, Issue 4, Pages 4888-4897Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.384512
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Funding
- European Research Council [694596]
- European Research Council (ERC) [694596] Funding Source: European Research Council (ERC)
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The combination of temporal chirp with a simple chromatic aberration known as longitudinal chromatism leads to extensive control over the velocity of laser intensity in the focal region of an ultrashort laser beam. We present the first implementation of this effect on a femtosecond laser. We demonstrate that by using a specially designed and characterized lens doublet to induce longitudinal chromatism, this velocity control can be implemented independent of the parameters of the focusing optic, thus allowing for great flexibility in experimental applications. Finally, we explain and demonstrate how this spatiotemporal phenomenon evolves when imaging the ultrashort pulse focus with a magnification different from unity. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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