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Specifications

Product Code

Y1
Substrate Material

UV -grade fused silica

S1 Surface Figure

λ/10 @ 633 nm before coating

S1 Surface Quality

10 -5 scratch and dig

S2 Surface Quality

Commercial polish

Diameter Tolerance

Ø 0/ 0/–0.25 mm

Thickness Tolerance

t ±0.25 mm

Wedge

≤5 arc min

Concentricity

±0.05 mm

Radius Tolerance

±

Coating Technology

Electron beam multilayer dielectric

Adhesion and Durability

Per MIL MIL-C-675C.

Insoluble in lab solvents.

Center Wavelength

1064 nm Reflectivity

Angle of Incidence 0°: R≥99.0%

Angle of Incidence 45°:

R≥98.5% for p p-polarization

R≥99.0% for unpolarized

R≥99.5% for s s-polarization

Clear Aperture

≥85% of central diameter

Damage Threshold

Pulsed: 20 J/cm cm2, 20 nsec, 20 Hz @ 1064 nm

cw: 10 MW/cm cm2 @ 1064 nm