The Nd:YAG laser output couplers we supply to our customers have a partial mirror coating on the first surface and an anti-reflection coating for the laser wavelength on the back surface to prevent reflection losses.
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Coated Surface λ/10 at 633 nm over 85% over clear aperture
S2: Commercial polish
>6 J/cm2, 8 ns pulse, 1064 nm typical for UVFS substrates.
These Nd:YAG laser output couplers are fabricated from UV fused silica substrates with excellent thermal performance and laser-grade surface specifications. Coating Technology: Electron beam multilayer dielectric; Adhesion and Durability: Per MIL-C-675A. Insoluble in lab solvents
The laser output coupler transmits a portion of the circulating power within the cavity for generating useful output from the laser. The output coupler transmission is usually chosen to maximize the achieved output power, although its optimum may be lower or higher if there are other design purposes.