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

BREWSTER ANGLE

 

The Brewster angle polarizer is made of two calcite prisms which are assembled with an air space. It is designed such that for the transmitted extraordinary -p polarization, each of the four faces are at Brewster's angle ( computed at about .830 micrometers ) which makes transmission loss of -p polarization as practically zero. Due to non normal angle of incidence, the transmitted beam suffers a beam displacement which is approximately 6 mm and 11 mm for 5 mm and 10 mm clear aperture Brewster angle polarizer respectively. In its mount, the Brewster angle polarizer is mounted in such a way that the incident beam normal to one of the two aperture holes in the mount is automatically incident at Brewster's angle at the entrance face of the polarizer.

 

 

Specifications :

 
B grade calcite    : greater than one wave wavefront deformation @ 633 nm due to striae  only

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 )  : >99 % in the visible and near IR
   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.

 
 

BREWSTER ANGLE

Catalog Number

Clear Aperture

Diameter (mm)

Mount Dimensions

( Inches)

 Remarks

Height

Width

Length
MGLBAB 5 5 0.622+/-.0025 0.622+/-.0025 1.250+/-.007

Grade B

Extinction 1*10^-4

MGLBAB10 10 1.500+/-.004 1.000+/-.004 2.200+/-.007
MGLBAA 5 5 .622+/-.0025 0.622+/-.0025 1.250+/-.007

Grade A

Extinction 5*10^-5

MGLBAA10 10 1.500+/-.004 1.000/+/-.004 2.200+/-.007
MGLBAS5 5 .622+/-.0025 0.622+/-.0025 1.250+/-.007

Grade S

Extinction 2*10^-5

MGLBAS10 10 1.500+/-.004 1.000+/-.0025 2.200+/-.007