3 ms·
The laser they used seems to be entirely VNIR, stopping at 400nm. I don't think you can pump a VUV laser with longer wavelength light without something like a
by kragen 1y ago
The laser they used seems to be entirely VNIR, stopping at 400nm. I don't think you can pump a VUV laser with longer wavelength light without something like a frequency doubling crystal, and I don't think anyone has done that. So I don't think they were trying to generate an EUV/VUV light source. The only thing about this setup that suggests EUV/VUV to me is their petahertz claim, which I think is an error stemming from getting overexcited about their measured fall time. But I'm not that familiar with the area, so I could be mistaken.
- deleted 1y ago[deleted]
- gsf_emergency 1y agoGraphene based frequency doubling has been a thing, though. (Terahertz). VUV 2HG ditto, but as you said nonlinear crystals, and the intensity is not as great as claimed? https://ieeexplore.ieee.org/document/6259401 https://ieeexplore.ieee.org/document/6259401 https://pubs.aip.org/aip/rsi/article-abstract/84/6/063104/355331/High-intensity-coherent-vacuum-ultraviolet-source?redirectedFrom=fulltext https://pubs.aip.org/aip/rsi/article-abstract/84/6/063104/35... Lots of intertwining uh avenues of research! (Without full fledged devices, it's easy to lapse into pareidolia on spectras & motivations :( )
- kragen 1y agoNeat, thanks!