Amazon.com: 20pcs Red Dot Laser Diode, 5V 650nm 5mW Small Mini Laser Pointer Head Module, DIY Mini Laser Tube with Leads Head Outer Diameter 6mm : Industrial & Scientific
The Blue Laser Diode: The Complete Story: Shuji Nakamura, Gerhard Fasol, Stephen J. Pearton: 9783540665052: Amazon.com: Books
Amazon.com: QL80S4HD-Y 9.0mm 500mW 808nm/810nm IR Infrared Laser Diode LD TO5 : Tools & Home Improvement
Amazon.com: Golden Cooling Heatsink Holder with Mount for 12mm Laser Diode Module(20mm×27mm×50mm) : Electronics