Total Reflector Mirror, Copper, 3.0 in., 12.7 mm Edge, Plano, MMR
The 61809 CO2 laser cavity total reflector mirror is 3.0 inch in diameter with a 12.7 mm edge thickness. This plano copper mirror features our MMR coating with 99.8% reflection at 10.6 μm. Total reflectors are quite similar to turning mirrors. However, durability of the coating is more critical because the total reflectors are exposed to the gas discharge and the high laser power density inside the cavity. Therefore, the coating must have best-possible environmental resistance and low absorption in order to minimize thermal distortion. Specifications
Type
Total Reflector
Optic Material
Copper
Diameter
3.0 in.
Edge Thickness
12.7 mm
Coating Type
MMR
Angle of Incidence
45°
Reflection
99.85% @ 10.6 μm, 40% @ 632.8 nm
P Polarization Reflection
99.75% @ 10.6 μm
S Polarization Reflection
99.9% @ 10.6 μm
S1 Radius
Plano
Surface Quality
10-5 scratch-dig
Surface Irregularity
1 Fringe @ 633 nm
Power
2 Fringes @ 633 nm
Wedge
<3' (arc minutes)
Phase Shift Tolerance
0 ±2º
Diameter Tolerance
+0/-0.12 mm
Thickness Tolerance
±0.1 mm
Type
Total Reflector
Optic Material
Copper
Diameter
3.0 in.
Edge Thickness
12.7 mm
Coating Type
MMR
Angle of Incidence
45°
Reflection
99.85% @ 10.6 μm, 40% @ 632.8 nm
P Polarization Reflection
99.75% @ 10.6 μm
S Polarization Reflection
99.9% @ 10.6 μm
S1 Radius
Plano
Surface Quality
10-5 scratch-dig
Surface Irregularity
1 Fringe @ 633 nm
Power
2 Fringes @ 633 nm
Wedge
<3' (arc minutes)
Phase Shift Tolerance
0 ±2º
Diameter Tolerance
+0/-0.12 mm
Thickness Tolerance
±0.1 mm
