Partial reflectors are commonly used as laser output couplers or beam attenuators.
For your convenience, II-VI maintains commonly used coatings and substrate radii of curvature in inventory. For available special substrate sizes and coatings, please contact a II-VI sales representative for a quotation.
Laser output couplers often require a slightly wedged substrate to eliminate interference from multiple reflections inside the component. If you require a specific wedge value, please specify this when ordering.
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Specifications
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Standards
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Dimensional Tolerances
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Diameter
Thickness (plano) Thickness (radiused) |
+0.000”-0.005”
+0.005”-0.010” +/-0.010” |
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Parallelism
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Plano
Radiused, Diameter < 1” Radiused, Diameter >= 1” |
<= 3 arc minutes
<= 10 arc minutes <= 5 arc minutes |
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Clear Aperture (polished)
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90% of diameter
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Surface Figure (power/irregularity) at 0.63µm
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Plano
Radiused |
1 fringe/0.5 fringe
(varies depending upon radius) |
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Surface-Dig
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20-10
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Side 1: Reflectivity Tolerance at 10.6µm
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1% to 5%: ±0.5%xR
6% to 85%: +3% 86% to 95%: +1.5% 96% to98%: +1% 99%: +0.2% 99.5%: +0.2% |
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Side 2: AR Coating Reflectivity at 10.6µm
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<= 0.20%
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Part #
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Description
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Diameter
(inches) |
Diameter
(mm) |
Edge
Thickness (inches) |
Edge
Thickness (mm) |
Reflectivity
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Radius**
Side 1/Side 2 |
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988175
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ZnSe
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1.0”
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25.4
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0.236”
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5.99
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65%
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30MCC/30MCX
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774314
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ZnSe
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1.0”
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25.4
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0.236”
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5.99
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50%
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PO/PO
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132098
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ZnSe
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1.1”
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27.94
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0.220”
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5.59
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50%
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20MCC/15MCX
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346822*
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ZnSe
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1.181”
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30.0
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0.236”
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5.99
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50%
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30MCC/30MCX
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554288
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ZnSe
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1.5”
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38.1
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0.236”
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5.99
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30%
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10MCC/10MCX
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187879
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ZnSe
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1.5”
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38.1
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0.236”
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5.99
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UC
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10MCC/15MCX
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120765
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ZnSe
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1.5”
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38.1
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0.236”
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5.99
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30%
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20MCC/PO
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903007
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ZnSe
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2.0”
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50.8
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0.300”
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7.62
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48%
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30MCC/20MCX
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*MP-5 type coating
**M is meter, CC is concave, CX is convex, PO is plano Contact a II-VI sales representative for exact specifications. |
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