Fisrt off lasers do not emmit white light, white light has all the colors all the wave lenghts and they are not in phase. To be a true laser all the light wave lenghts are the SAME and in PHASE, otherwise it's not a laser. It's the same wave lenght and in phase that make the laser light unique.
There are white LEDs on the market, they have a 3 LEDs red, green and blue mounted next to each other in the same bulb. If all 3 leds are on then you will get white light.
They are many working on LEDs for LCD and LCD, DLP and LCoS sets.
One of the other stores on the same page. John
Check out this link that describes a new, future Mitsubishi RPTV that uses a semiconductor laser for light rather than the existing mercury lamp-based lights: http://www.digitaltvdesignline.com/products/showArticle.jhtml?articleID=180204821. It's good to know that technology never stops and our toys will just keep getting better.