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11 June 2024 Water-based high stability supercontinuum generation at multi-kilohertz repetition rates
K. R. Keller, R. Rojas-Aedo, A. Vanderhaegen, M. Ludwig, D. Brida
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Proceedings Volume PC12992, Advances in Ultrafast Condensed Phase Physics IV; PC129920B (2024) https://doi.org/10.1117/12.3022509
Event: SPIE Photonics Europe, 2024, Strasbourg, France
Abstract
In this work, we introduce a technical approach to harness liquids for highly stable and efficient Supercontinuum Generation (SCG) at up to few hundreds of kHz. Using a differential pressure scheme, the velocity at which the liquid interacting with the laser is exchanged, is optimized to achieve pump source limited stability. This approach is validated by generating a SC in water pumped at the Fundamental Wavelength (FW) and the Second Harmonic (SH) of a Yb:KGW laser amplifier at 50 kHz and 100 kHz. In addition to its high stability, the resulting SC signal is more broadband and has a higher spectral intensity compared to the signals obtained with the established crystals Yttrium Aluminum Garnat (YAG) and sapphire.
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K. R. Keller, R. Rojas-Aedo, A. Vanderhaegen, M. Ludwig, and D. Brida "Water-based high stability supercontinuum generation at multi-kilohertz repetition rates", Proc. SPIE PC12992, Advances in Ultrafast Condensed Phase Physics IV, PC129920B (11 June 2024); https://doi.org/10.1117/12.3022509
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KEYWORDS
Supercontinuum generation
Liquids
Solids
Water
Dielectrics
Optical damage
Pulse signals
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