T-BSW27 - Ø2" 50:50 UVFS Plate Beamsplitter, Coating: 350 - 1100 nm, t = 8.0 mm
- Beamsplitter Coating on Front Surface: 350 - 1100 nm
- Optimized for 50:50 Beamsplitting for a 45° Angle of Incidence (AOI)
- Antireflection (AR) Coating on Back Surface: 350 - 1100 nm
- Ø1/2", Ø1", 25 mm x 36 mm, and Ø2" Versions Available
| Damage Threshold Specifications |
| Item # |
Damage Threshold |
| T-BSW2x |
CW |
250 W/cm (532 nm, Ø684 µm) |
| Pulsed |
10 J/cm2 (810 nm, 10 ns, 10 Hz, Ø130 µm) |
| Specification |
Value |
| Split Ratio (R:T) |
50:50 |
| Overall Performancea
|
Tabs = 50 ± 12%, Rabs = 50 ± 12%, Tabs + Rabs > 99%,
|Ts-Tp| < 40% and |Rs-Rp| < 40%, 45° AOI
|
| Diameter |
2" |
| Diameter Tolerance |
+0.0 mm / - 0.2 mm |
| Center Thickness |
8.0 mm |
| Thickness Tolerance |
±0.4 mm |
| Surface Flatness (Peak to Valley)b
|
<λ/2 @ 633 nm |
| Coating on Surface 1c
|
350 - 1100 nm Beamsplitter Coating for 45° Incidence |
| Coating on Surface 2c
|
Broadband AR Coating for 350 - 1100 nm
(Ravg < 2.0% within Wavelength Range) |
| Wedge Angle |
30 arcmin |
| Wedge Angle Tolerance |
±10 arcmin |
| Substrate |
UV Fused Silica |
| Clear Aperture |
>Ø45.72 mm |
| Surface Quality |
20-10 Scratch-Dig |
| Item # |
Size |
Thickness |
Wedge Angle |
Split Ratio (R:T) |
Overall Performance |
| T-BSW25 |
Ø1/2" |
3.0 mm |
30 arcmin |
50:50 |
Tabs = 50 ± 12%, Rabs = 50 ± 12%,
Tabs + Rabs > 99%,
|Ts-Tp| < 40% and |Rs-Rp| < 40%,
45° AOI |
| T-BSW26 |
Ø1" |
5.0 mm |
30 arcmin |
50:50 |
| T-BSW26R |
25 mm x 36 mm |
1.0 mm |
No Wedge |
50:50 |
| T-BSW27 |
Ø2" |
8.0 mm |
30 arcmin |
50:50 |
