Ultrafast Laser Beamsplitter, P Polarized, 50.8 mm, 680-1080 nm

The 20RQ00UB.4 low GVD 50/50 Beamsplitter for Ultrashort Pulses is specially designed to minimize femtosecond pulse dispersion and wavefront distortion of reflected and transmitted light. This beam splitter is for P-polarized light is coated to provide a 50-50 split at 45° angle of incidence from 680-1080 nm. A thin UV grade fused silica substrate, with λ/10 wavefront distortion, is used to reduce pulse dispersion from the substrate material. For the UB.4 coating group velocity dispersion is between +50 fs² and -180 fs² over 680-1080 nm for P-polarized light at 45° angle of incidence. UB.4 coated beamsplitter can be used to split 50% of the P-polarized output beam from Spectra Physics ultrafast amplifiers and oscillators namely Solstice and Spitfire, and Mai Tai. This 50.8 mm diameter beamsplitter is designed to minimize pulse dispersion and maximize bandwidth for beam splitting and autocorrelation measurements of ultrafast laser pulses.

Specifications

Technical Specs

Wavelength Range
680-1080 nm
Diameter
50.8 mm
Material
UV Grade Fused Silica
Coating Code
UB.4
Coating Second Surface
Uncoated
Angle of Incidence
45°
Orientation
Beam should enter surface marked with an arrow
Polarization
P
Wavefront Distortion
≤λ/10 at 632.8 nm over the clear aperture
Surface Flatness
≤λ/10 at 632.8 nm over the clear aperture
Surface Quality
20-10 scratch-dig

Diameter Tolerance
+0/-0.25 mm
Thickness
3.0 mm
Thickness Tolerance
±0.25 mm
Wedge
≤1 arc min
Clear Aperture
> central 80% of diameter
Chamfers
0.5 mm face width
Chamfers Angle Tolerance
45±15°
Cleaning
See How to Clean Optics

Wavelength Range
680-1080 nm
Diameter
50.8 mm
Material
UV Grade Fused Silica
Coating Code
UB.4
Coating Second Surface
Uncoated
Angle of Incidence
45°
Orientation
Beam should enter surface marked with an arrow
Polarization
P
Wavefront Distortion
≤λ/10 at 632.8 nm over the clear aperture
Surface Flatness
≤λ/10 at 632.8 nm over the clear aperture
Surface Quality
20-10 scratch-dig

Diameter Tolerance
+0/-0.25 mm
Thickness
3.0 mm
Thickness Tolerance
±0.25 mm
Wedge
≤1 arc min
Clear Aperture
> central 80% of diameter
Chamfers
0.5 mm face width
Chamfers Angle Tolerance
45±15°
Cleaning
See How to Clean Optics

Resources & Downloads

3D Product Models

Download CAD Files

Other

20RQ00UB.4 RoHS Certificate(264.6 kB, PDF)
20RQ00UB.4_ROHS2-2021.pdf(281.1 kB, PDF)

2D Product Drawings

UF5050PLATE-S(69.9 kB, PDF)

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