Oclaro HL63193MG 5.6mm 635nm 638nm Red 700mw Laser Diode / High Power | eBay
638nm, 900mW High Stability Red Laser Module by OptLasers
638 nm Laser (Diode; Free-space)
High Power 638nm Red Line Laser Diode Module 300mw 500mw 700mw 1000mw With Cooling Fan (free With Bracket And Adapter) - Woodworking Machinery Parts - AliExpress
5.6mm 638nm 700MW Red Laser Diode for 3D-Imaging - China Laser Diode, Red Laser Diode | Made-in-China.com