Hi. Looking for used/junk electronics that writes/burns blue ray discs or replacement sled part to re-purpose its multiple laser emitter. What should I look for ? Am after at least violet and red in same package

 

Hello,

The role of the laser

The most important part of an optical disc drive is an optical path, placed in a pickup head and usually consisting of a semiconductor laser, a lens for guiding the laser beam, and photodiodes, capable of converting light into an electrical signal, detecting the light reflection from the disc’s surface. Initially, CD lasers with a wavelength of 780 nm, which is within infrared range, were used. For DVDs, the wavelength was reduced to 650 nm (red color), and the wavelength for Blu-ray Disc was reduced to 405 nm (violet color).

From this page:
https://escooptics.com/blogs/news/84500291-relaxing-with-lasers-burning-and-watching-dvd-s

Bertus

 

Thanks. Yes, but am asking which gadget can be canibalized for its multiple laser emitter. The Sony PS3,4 seems do not burn blue rays.