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Regular Plate Beamsplitters

Regular Plate Beamsplitters

1. Substrate

- Material: UV fused silica or BK-7 window

- Clear Aperture: Larger than central 85% of diameter

- Surface Quality: 10-5 Scratch-Dig

- Diameter Tolerance: +0.000 / -0.010" (0.00 / -0.25mm)

- Thickness Tolerance: ±0.010" (±0.25mm)

- Bevel: < 0.5mm @ 45° typical

- Wedge: ≤ 5arcmin

2. Other specifications

- Coating: e-beam multilayer dielectric

- Angle of incidence: 45°

- 2nd surface: Anti-reflection coating

- Damage Threshold: 10 J/cm2, 20ns, 20Hz; 1 MW/cm2, CW @ 1064nm

 

 

In some applications cube beamsplitters are not appropriate, and instead plate-type splitters are employed. For the highest levels of wavefront fidelity and power handling, conventional coated BK7 or fused silica plates are excellent choices. Spectral Optics provides various R/T ratio regular plate beamsplitters coated with an all dielectric coating. They have almost no absorption and are designed for 45° (or other angle of incidence) at a specific wavelength and a polarization (S-pol, P-pol, or unpol). The 2nd side of the window has an anti-reflection coating. Please click HERE for the polarizing plate beamsplitters.

 

[RPBS]-[λ]-[R]-[AOI & Pol]-[Size]-[Material]

[RPBS]

λ (nm)

R (%)

AOI & POL

Size Code

Material

Price ($ USD)

[248], [266], [308],

[337], [355], [400],

[488], [532], [633],

[670], [780], [800],

[850], [980], [1030],

[1064], [1319], [1550],

[1850], etc.
[20] (±5), [30] (±5),

[40] (±5), [50] (±5),

[60] (±5), [70] (±5),

[80] (±5), [90] (±3),

[95] (±2), [98] (±1),

[99] (±0.5), etc.
[45S],

[45P],

[45U],

etc.
[1025]
(1.0" X 0.25")
FS $310 (< 300nm)
$280 (< 400nm)
$220 (≥ 400nm)
BK $200 (≥ 400nm)
[1525]
(1.5" X 0.25")
FS $365 (< 300nm)
$330 (< 400nm)
$260 (≥ 400nm)
BK $235 (≥ 400nm)
[2025]
(2.0" X 0.25")
FS $450 (< 300nm)
$400 (< 400nm)
$300 (≥ 400nm)
BK $270 (≥ 400nm)
[3050]
(3.0" X 0.50")
FS Contact Us
BK $670 (≥ 400nm)
[4050]
(4.0" X 0.50")
FS Contact Us
BK $995 (≥ 400nm)

 

Example: RPBS-248-50-45U-1025-FS

Plate Beamsplitter + 248 + 50% (± 5%) R + 45° Unpolarization + 1.0" dia x 0.25" T + Fused Silica

 

NOTE:

 

1. The selection of the substrate material is dependent on the wavelength. Below 400nm, the UV fused silica is recommended.

2. Any other wavelength and R/T ratio can be supplied on request.

3. Other angle of incidence is also available.

4. Please describe your custom requirements when you contact us.

 

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