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Updated: Jun 9, 2026
Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
Published on: April 25, 2019
Flat-plateau supercontinuum generation in liquid absorptive medium by femtosecond filamentation
Li Wang1, Ya-Xian Fan, Zhen-Dong Yan
1Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China.
Abstract:
We have studied filamentation and supercontinuum generation by focusing the intense femtosecond laser pulses into an absorptive medium (CuSO(4) aqueous solution). A broad spectrum from 350 to 950 nm with a flat plateau spanning approximately from 450 to 700 nm with a flatness of 9% is obtained without any additional filters. The results indicate that the absorptive medium not only suppresses the strong surplus femtosecond laser signal but also flattens the supercontinuum spectrum efficiently.
