Here’s the scoop:
- Beam exits the glass laser tube through an expensive bit called the Output Coupler (a partially-reflective window). It’s permanently welded to the laser, so it’s important to keep it clean.
- Beam emerges in a custom molded plastic tube with an airtight seal that protects the output coupler.
- Beam enters the solid machined aluminum turning block.
- Beam hits two delicate first-surface mirrors, making a U-turn.
- Beam exits the machined block through a laser-transparent window.
(this is the only point at which the beam is exposed) - Beam enters the head through another laser-transparent window.
- Beam goes through its beaming magic in the head, with another first surface mirror, autofocus, and the like.
- Beam exits head, along with a tiny stream of air to keep nasty stuff out
- Beam makes cool things for you!
We think this is a huge improvement over the standard arrangement with a bare output coupler and turning mirrors that are directly in line with the flow of exhaust.