Beamsplitters

Download Optics for CO2-Lasers Datasheet (PDF, 198 KB)

BeamsplitterBeamsplitters allow a certain percentage of incident energy to be reflected while transmitting the remainder. In most cases, beamsplitters are angle, wavelength and polarization sensitive.

Specifications:

1. Material: CVD-ZnSe
2. Diameter tolerance, mm: +0.0 / -0.1
3. Thickness tolerance, mm: +/- 0.25
4. Parallelism, arc min: <= 3
5. Clear aperture: 90% of diameter
6. Surface quality, scr/dig: 40/20
7. Surface figure (power-irregularity)
@ 633 nm, fringe:

1 - 1/2
8. Side 1: Reflectivity tolerance
@ 10.6 µm, %:    1% - 5%
+/- 0.5 x R
                   6% - 85% +/- 7
                 86% - 93% +/- 5
               94% - 99.5% +/- 0.5
9. Side 2: AR Coating reflectivity
per surface @ 10.6 µm:
Typicaly < 1%,
varies with polarisation and incidence angle
10. Angle of incidence, arc grad: 45

Maximal diameter – 50.8 mm.

Standard sizes:

Diameter Thickness
inches mm inches mm
0.375 9.52 0.080 2.0
0.50 12.7 0.080 2.0
0.75 19.1 0.080 2.0
1.00 25.4 0.080 2.0
1.00 25.4 0.120 3.0
1.10 27.9 0.120 3.0
1.50 38.1 0.120 3.0
2.00 50.8 0.200 5.1

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