Supercontinuum laser beam (IMAGE)
Caption
For the new technique, the researchers developed a way to transmit a femtosecond pulsed laser through a thick optical window and then used a process called laser induced filamentation to expand it into a supercontinuum pulse that remains coherent. The range wavelengths in the expanded pulse is pictured.
Credit
Alexis Bohlin, Luleå University of Technology
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