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Polarizing Beam Displacers
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Materials: alpha-BBO,
Calcite or
YVO4 single crystal.
Two orthogonally polarized outputs,
o-ray transmits
directly, e-ray transmits with a displacement.
High
extinction ratio ( > 100,000:1
) over specified
range of wavelength.
PBD Specifications
Dimensions Tolerance: +/- 0.2 mm
Wavefront Distortion: <
λ/4
@632.8nm
Scratch/Dig: 40/20
Beam Deviation: < 0.5 arc minutes
Extinction Ratio: > 100,000:1
Standard Products
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Beam paths and polarizations |
Coatings:
Unless the coating is
specified, PDB is coated with single-layer MgF2 protective coating
(P-coating) to prevent moisture from the polished faces, PDC and
PDY are uncoated.
Input and output
faces can be
AR coated with R<0.25% at the specified central wavelength. Please specify
the coating and append to the part number, e.g.
PDC1040-AR800 for the calcite beam displacer with the AR coating @ 800nm.
Common AR coatings:
α-BBO: 355, 400, 532, 775, 800, 1030, 1064, 1550nm, and dual AR@800/400nm,
1030/515nm,
1064/532nm, 1550/755nm
Calcite: 775, 800, 820, 1064, and 1550nm
YVO4: 1064 and 1550nm
Custom beam displacers with different
dimensions and coatings can be fabricated by Newlight Photonics Inc..
Please contact us for the beam displacers that best suit your applications.
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