Quantum dots are well-known bright light emitters," says Alex Voznyy, a senior research associate in Sargent's lab. "They can absorb a lot of energy and re-emit it at a particular frequency, which makes them a particularly suitable material for lasers."
Read more at: https://phys.org/news/2017-03-saucer-quantum-dots-secret-brighter.html#jCp
Don't hold your breath
With optically pumped quantum dots you cannot achieve population inversion, so there is no way to make lasers out of those, even if they make commercially viable backlights for tv's and such.
The article claims they've been able to coax short pulses of laser output from quantum dots for years, just not easily or efficiently. And these oblate shpheroid dots are capable of CW lasing via optical pumping.
IF they could somehow be electricallly pumped directly that could be a game changer in the future, but we are not there yet by a long shot.
It would. In fact, i'm surprised that we don't have a much wider range of diode laser colors available right now.
Apparently creating different wavelength diode lasers has been quite difficult, even green ones. The 510-520 nm variety is a pretty recent development (at least commercially) and is very usefull to create all-direct-diode RGB projectors and such.
I think the commercial interest in creating a yellow laser diode is much lower, though it could be very useful to increase the brightness of projections, if it could be easily mixed with other colors (needs an extra dichro, adjust and and all).