Compact green-light sources could slash the cost of laser TV
What the world needs now is a semiconductor laser that’s good, cheap, long-lasting, powerful, and truly green. Such a device could revolutionize information display, improve certain ophthalmological therapies, and give us affordable televisions with bigger, more dazzling pictures than the best available today.
For display, it would make possible a full-color projector small enough to fit inside a mobile telephone. It may even one day be possible to project ultravivid images directly onto your retina.