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Broadband Non-Polarizing Cube Beamsplitters
Broadband Non-Polarizing Cube Beamsplitters
Our broadband non-polarizing hybrid cube beamsplitters are ideal for use with multiple lasers or tunable sources. Incoming beams are both transmitted and reflected 45%, with the s- and p-polarized components matched to within 10%.
- Even power split ratio insensitive to polarization
- Broadband and chromatically neutral
- Flat spectral response across broad range of incidence angles
- Broadband metal-dielectric hybrid beamsplitter coating at hypotenuse
- Dielectric antireflection coating at four faces to minimize surface reflection losses See All Features
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Mounting Options
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| Mount Type | Platform Mount | Prism Stage | ||||
| Models | PO46-50 Series | |||||
| Accessories | Requires |
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| Adjustments | 2-axis | 3-axis | ||||
| Compatible Cube Sizes | 5.0-50.8 mm | 5.0-25.4 mm | 6.35-25.4 mm | 12.7-25.4 mm | ||
| Special Features | – | – | Table Mount | – | Gimbal | Gimbal, AegisQube™ System Compatibility |
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| Mount Type | Cube Mount | ||||
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| Accessories | – | – | – | – | Optional |
| Adjustments | Fixed1 | 1-axis | |||
| Compatible Cube Sizes | 25.4 mm | 12.7, 25.4 mm | 25.4 mm | 12.7, 25.4 mm | |
| Special Features | A-Line™ System Compatibility | Lens or Rotation Mount Compatibility | OpticsCage+™ or Mirror Mount Compatibility | OpticsCage+™ System Compatibility | |
1Adjustments are added to the CH and UPA-CH series cube mounts when being held by a kinematic or rotary mount.
Specifications
- ShapeCube
- MaterialGrade A N-BK7
- Coating TypeBroadband metal-dielectric non-polarizing
- Antireflection CoatingMultilayer broadband dielectric
- Angle of Incidence0°±5°
- OrientationTo avoid damage, beam should enter prism marked with a dot
- ReflectionRs, p = 45 ±5% average, 35%≤ Rs, p ≤55%
- Reflected Beam Deviation90° ±5 arc min
- TransmissionTs, p = 45 ±5% average, 35%≤ Ts, p ≤55%
- Transmitted Beam Deviation≤5 arc min
- PolarizationS- and P-polarization components matched to within 10%,|Ts - Tp| ≤10%, |Rs - Rp| ≤10%
- Wavefront Distortion≤λ/4 at 632.8 nm over the clear aperture
- Surface Quality40-20 scratch-dig
- Surface Flatness≤λ/4 at 632.8 nm
- Damage Threshold100 W/cm2 CW, 0.1 J/cm2 with 10 nsec pulses, typical
- Clear Aperture>80% of central dimension
- Size Tolerance±0.254 mm
- Operating Temperature Range-50 to 90°C
- DurabilityMIL-C-675C
- Cleaning
Features
Broadband Metal-dielectric Hybrid Coatings
Three metal-dielectric hybrid broadband coatings are offered covering the 400-700 nm, 700-1100 nm, and 1100-1600 nm wavelength ranges. Incoming beams are both transmitted and reflected 45%, with the s and p-polarized components matched to within 10% of each other. Hybrid beamsplitters are less sensitive to changes in angle of incidence, resulting in an optic that is chromatically neutral for both convergent and divergent beams.
Works Great With Tunable lasers
Broadband non-polarizing hybrid cube beamsplitters have moderate absorption but minimal polarization sensitivity. The broad spectral flatness of these beamsplitters makes them ideal for use with multiple sources or tunable lasers.
Constructed With Pair of Right-Angle Prisms
These beamsplitters consist of a pair of precision right-angle prisms carefully cemented together to minimize wavefront distortion. The hypotenuse of one of the prisms is coated with a metal-dielectric hybrid beamsplitter coating optimized over a broad wavelength range. The four faces are antireflection coated with a broadband multilayer dielectric coating to minimize surface reflection losses over the wavelength range. Due to the metallic nature of the hybrid coating, these beamsplitters are not intended for use with higher power lasers.
Proper Orientation
Cube beamsplitters are formed by cementing two right angle prisms together. One of the two prisms has the partially reflective metal-dielectric coating applied to its hypotenuse. In Newport's cube beamsplitters the coated prism is marked with a visible dot. Incident light should enter the prism with the coated hypotenuse in order to minimize power passing through the optical cement. Alternatively, a beam entering via the uncoated prism results in more than triple the fluence in the cement (the transmitted component, plus a double pass by the reflected component). With higher power beams this can result in degradation of the cement.
