I can't tell how old this article is sorry. Talks about work on diode lasers in the green and blue portions of the spectrum at odd wavelengths
http://www.laserfocusworld.com/disp...Blue-green-laser-diode-technology-moves-ahead
				
			http://www.laserfocusworld.com/disp...Blue-green-laser-diode-technology-moves-ahead
 
 
	

 
 
		