High-performance visible-light lasers that fit on a fingertip;
High-performance visible-light lasers that fit on a fingertip
Jan 06, 2023
Last reply: 3 years ago
5 Replies
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"Researchers at Columbia Engineering's Lipson Nanophotonics Group have created visible lasers of very pure colors from near-ultraviolet to near-infrared that fit on a fingertip. The colors of the lasers can be precisely tuned and extremely fast -- up to 267 petahertz per second,"
There goes their credibility.
Are you sure it wasn't accelerating? ;-)
It's an error from ScienceDaily. The original article at
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states: "In addition, we show fine-tuning speeds of up to 267 GHz µs⁻¹ ..."
Even then, 267 GHz would be 0.267 PHz. So two errors for the price of one!
Using multiplier prefixes in both numerator and denominator is a sin in my eyes, but it *does* translate to a tuning speed of 267 PHz/s, at least they got that right. Other than that, the article is pretty much empty of substance, as usual.
Jeroen Belleman
0.000267 PHz. ;)
Cheers
Phil Hobbs
You're right, of course. Where did I put that tera when I needed it?! But I agree about mixing multipliers.
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