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A comment on World’s Shortest Wavelength Laser Diode Emits Deep UV Light at Room Temperature. Parent comment

Re:World’s Shortest Wavelength Laser Diode Emits Deep UV Lig... by semi-extrinsic on Sunday January 19, 2020 @01:35PM (#22093013)
If you look at CO2 lasers, at 40W ($350 on eBay) you can cut plywood, at 150W ($5000 on eBay) you can cut metal. Both of those are 1040 nm.

The 450 nm modules you can get up to 5W ($100 on eBay), but those can hardly cut anything, they're more like engravers.

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Re:World’s Shortest Wavelength Laser Diode Emits Deep UV Lig... by mdturnerphys on Sunday January 19, 2020 @04:44PM (#22094329)
CO2 lasers are typically at 10.6 microns. They can cut metal but you need at least 100W and RF pumping. Metal-cutting lasers are more commonly fiber lasers with wavelengths of ~1050nm.
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