https://ece.ncsu.edu/inthenews/zinc-based-semiconductors-point-to-new-lasers-and-leds/
Zinc-based semiconductors point to new lasers and LEDs - Electrical and Computer Engineering
Sep 27, 2017 - Researchers claim to have solved a long-standing problem in materials science, a development that makes it possible to create new semiconductor devices using
lasers and leds
https://www.engadget.com/2006-07-09-new-lasers-from-ricoh-read-both-hd-dvd-and-blu-ray.html
New lasers from Ricoh read both HD DVD and Blu-ray
Jul 9, 2006 - We've been tempering our enthusiasm about the possibility of next-gen hybrid HD DVD / Blu-ray player -- mostly because of Samsung and their fear of commitment...
new lasershd dvdricohread