Karl Lambrecht Corporation

4204 N. Lincoln Ave., Chicago, IL 60618.

Phone : 773-472-5442 / Fax : 773-472-2724

email : sales@klccgo.com / website : www.klccgo.com

crystal polarizers

retardation devices

scramblers

thin film polarizers

anti-reflection coatings

rotary stages

 

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CALCITE POLARIZERS
Glan Taylor
Glan Laser

Glan Thompson
UV Glan Thompson
Brewster Angle
Glan Thompson Beam Splitting
Glan Laser Combining Splitting
Glass Calcite Rochon
Wollaston
Beam Displacer
IR Plate
MAGNESIUM FLUORIDE POLARIZERS
Rochon
CRYSTAL QUARTZ POLARIZERS
Rochon
Wollaston
RETARDATION DEVICES
Crystal Quartz
Magnesium Fluoride
Achromatic
Mica
Fresnel Rhomb
Babinet Soleil Compensator
Fixed Rotator
SCRAMBLER
Calcite Scrambler
Quartz Scrambler
Magnesium Fluoride Scrambler
THIN FILMS
Narrow Band Polarizing Cube
Broad Band Polarizing Cube
Thin Film Optical Isolator
Thin Film Beam Displacer
Anti Reflection Coating
MOUNTING DEVICES
Rotary Stage
GLASS COMPONENTS
Coupling Prism

CALCITE BEAM DISPLACER

 

A calcite Beam Displacer splits the input unpolarized beam of light into two orthogonally polarized components which exit parallel to each other. The ordinary polarization transmits straight through while the extraordinary transmits through the crystal making approximately 6 degree angle with the straight through beam and emerges parallel to it. The beam displacement varies slightly with wavelength. Non standard beam displacers are available by special order.

 

 

 

 

Specifications :

 
A grade calcite   : quarter to one wave wavefront deformation @ 633 nm due to striae  only
S grade calcite : quarter wave wavefront deformation @ 633 nm due to striae  only
surface flatness  : at least quarter wave @ 633 nm over the clear aperture
surface quality  : 40-20 scratch dig
transmission ( uncoated )  : 35-40% at 350 nm, 65-70% at 400 nm, 80-88% at 500 nm and longer wavelengths  
     please visit Anti Reflection Coating page for reflectivity plots of available coatings

 

Calcite is a natural  mined crystal . Defects in bulk calcite are characterized by bubbles ( presence of randomly scattered bubbles vary from relatively large to small sizes and fine bubble lines), striae ( streaks of sudden variation of refractive index which can be detected interferometrically ), optical inhomogeneity ( gradual variation of refractive index in bulk material ) and stress birefringence ( variation of birefringence in bulk material due to defective growth of the crystal ). These defects cause degradation of polarization and transmission loss due to scattering and absorption.

 
 

CALCITE BEAM DISPLACER

Catalog Number

Minimum

Aperture

mm

Material

Quality

Length

mm

Displacement

mm

Mount Dimensions

( Inches)

Outside

Diameter

+/- .0015

Length

+/- .007
MBDA 8 8*8 A 24 2.7 .748 1.125
MBDA10 10*10 A 30 3.3 .873 1.375
MBDA12 12*12 A 36 4 .998 1.625
BDA512 5*12 A 27 3 Supplied Unmounted
BDA816 8*16 A 36 4
BDA516 5*16 A 45 5
MBDS 8 8*8 S 24 2.7 .748 1.125
MBDS10 10*10 S 30 3.3 .873 1.375
MBDS12 12*12 S 36 4 .998 1.625
BDS512 5*12 S 27 3 Supplied Unmounted
BDS816 8*16 S 36 4
BDS516 5*16 S 45 5