Overview: This 56 Deg Polarizing Plate Beamsplitters transmit p-polarization and reflect s-polarization as the
monochromatic beam entering at Brewster’s angle (56° AOI). They are designed for use in the most demanding lasers. Due to
the high laser damage threshold, they are used as an
alternative to Glan laser polarizing prisms or cube polarizing
beamsplitters. Typical applications are intracavity Q-switch
hold-off polarizers or extracavity attenuators for Nd:YAG lasers.
Our 56 Deg plalte polarizing beamsplitter can be used at
an > 40° angle of incidence, but polarization is most efficient
and appears in a broad wavelength range at 56° AOI (Brewster
angle). General Specifications of 56 Deg Polarizing Plate Beamsplitter: | Material | N-BK7, UV Fused Silica | | | Dimension Tolerance | +0/-0.2mm | | Surface Quality | 60/40 scratch and dig | | Clear Aperture | >90% | | Flatness | <λ/8@632.8nm per 25mm | | Parallelism | <3 arc minutes | | Extinction Ratio | Tp/Ts>100:1 | | Transmittance | Tp>95%, Ts<0.5% | | Reflectance | Rs>99.5%, Rp<5% | | Coating | Polarization beamsplitter coating on one face(AOI 56deg, needs
to be tuned to optimized AOI in use) Second surface uncoated. | | Damage Threshold | >5J/cm2, 20ns, 20Hz, @1064nm |
Standard Products of 56 Deg Polarizing Plate Beamsplitter: | Part Number | Material | Diameter (mm) | Thickness (mm) | Tp/Ts | Wavelength (nm) | AOI (°) | | PPB1203-266-56 | UVFS | 12.7 | 3.0 | 100:1 | 266 | 56 | | PPB2503-266-56 | UVFS | 25.4 | 3.0 | 100:1 | 266 | 56 | | PPB3003-266-56 | UVFS | 30.0 | 3.0 | 100:1 | 266 | 56 | | PPB5003-266-56 | UVFS | 50.8 | 3.0 | 100:1 | 266 | 56 | | PPB1203-355-56 | UVFS | 12.7 | 3.0 | 100:1 | 355 | 56 | | PPB2503-355-56 | UVFS | 25.4 | 3.0 | 100:1 | 355 | 56 | | PPB3003-355-56 | UVFS | 30.0 | 3.0 | 100:1 | 355 | 56 | | PPB5003-355-56 | UVFS | 50.8 | 3.0 | 100:1 | 355 | 56 | | PPB1203-532-56 | N-BK7 | 12.7 | 3.0 | 100:1 | 532 | 56 | | PPB2503-532-56 | N-BK7 | 25.4 | 3.0 | 100:1 | 532 | 56 | | PPB3003-532-56 | N-BK7 | 30.0 | 3.0 | 100:1 | 532 | 56 | | PPB5003-532-56 | N-BK7 | 50.8 | 3.0 | 100:1 | 532 | 56 | | PPB1203-1064-56 | N-BK7 | 12.7 | 3.0 | 100:1 | 1064 | 56 | | PPB2503-1064-56 | N-BK7 | 25.4 | 3.0 | 100:1 | 1064 | 56 | | PPB3003-1064-56 | N-BK7 | 30.0 | 3.0 | 100:1 | 1064 | 56 | | PPB5003-1064-56 | N-BK7 | 50.8 | 3.0 | 100:1 | 1064 | 56 |
Coating Graphs of 56 Deg Polarizing Plate Beamsplitter: 266nm Polarizing Plate Beamsplitter 56°AOI | 355nm Polarizing Plate Beamsplitter 56°AOI | 532nm Polarizing Plate Beamsplitter 56°AOI | 1064nm Polarizing Plate Beamsplitter 56°AOI |
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