lasers

This is very hard to do with continuous wave lasers, but rather routine with short pulsed lasers (e.g.

Actually supercontinuum lasers are not a recombination of different (incoherent) lasers but rather a 'processed' output from a single laser.

This allows you to interfere the waveforms of the different lasers in time, as their relative phases are locked.

White lasers are pretty common at big raves and have been for at least 10 years.

The second is that this was accomplished in a single growth run, unlike several other devices we cite which essentially just run multiple lasers in parallel.

For more cool physics related to this read about frequency combs, which are (most of the time) frequency stabilized supercontinuum lasers.

At the very extreme, it causes the eye damage well known of high-power lasers.

Now if they start coming across variants that can shoot lasers from their eyes, I'll be worried.

So if this is just creating white additively using RGB lasers, won't it be more like 3 frequencies, not a full spectral band?

Perhaps lasers and radar similar to how Google's driverless cars detect potential hazards?

Last time I did research on that, there were experimental treatments (also involving lasers) to try to dissolve them.

According to the article they generate three lasers from the same silicon.

And "white" here really means tri-color, not continuous spectrum - although with lasers that's probably to be expected.

I question the claim that "lasers are brighter, [and] more energy efficient [than LEDs]," though.

Lasers are terrible examples, they were invented in the 60s and an absolute upper bound on their introduction into the consumer market is 1982.

Lasers are brighter, more energy efficient, and can potentially provide more accurate and vivid colors for displays like computer screens and televisions Brighter is not necessarily a good thing.

Lasers are a poor choice for atmospheric communication, unless this kind of infrastructure is specifically designed to be deployed in places like deserts with a clear sky all the year around!