An ultraviolet/blue/green vertical cavity surface emitting laser (VCSEL) for use in high density data storage that includes the fabrication of a VCSEL structure on a metallic single crystal substrate. The metallic single crystal substrate is utilized as a back reflecting mirror that in conjunction...http://www.google.com.au/patents/US5838707?utm_source=gb-gplus-sharePatent US5838707 - Ultraviolet/visible light emitting vertical cavity surface emitting laser and method of fabrication 
