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

MAGNESIUM FLUORIDE ROCHON

 

The magnesium fluoride Rochon polarizer is made of two prisms of single crystal magnesium fluoride which are optically contacted. A ray at normal incidence to the entrance face travels perpendicular to optic axis of the first prism as shown. For this arrangement, beam separation angle vs wavelength is plotted below. This polarizer can be used over the spectral range of 140 to 6000 nm and has an extinction ratio of at least  10^-3.

We also offer an air spaced version of a 12 mm clear aperture diameter Rochon. It is mounted in a black anodized aluminum cell. Its beam separation angle varies from .67 degree at 140 nm to .36 degree at 6000 nm. Please contact us for more details. 

 
 

 

beam separation vs wavelength

Specifications :

 
surface flatness : quarter wave @ 633 nm over the clear aperture
surface quality :40-20 scratch dig
transmission ( uncoated ) : at least 80% at 220 nm, at least 85% from 300 to 5500 nm
    ( polarizer is supplied uncoated - Fresnel reflection per surface is 2.6% at 633 nm )

 

Magnesium fluoride is a synthetically grown positive ( Ne > No ) uniaxial crystal which has a wide transmission region from 150 nm and lower to at least 6500 nm and higher. Because of it's relatively low birefringence, it is not feasible to fabricate a magnesium fluoride Glan type polarizer. A Karl Lambrecht Corp. made magnesium fluoride Rochon was first tested at the University of Chicago* in 1969.

* Applied Optics / Vol. 8, No. 6 / June 1969

 
 

MAGNESIUM FLUORIDE ROCHON

Catalog Number

Clear Aperture

Diameter in mm

Angular Separation

in degrees

Mount Dimensions

( Inches)

Outside

Diameter

+/- .0015

Length

+/- .007
MFRV5 5 5.4 @ 140 nm

5.1 @ 200 nm

4.6 @ 546 nm

 .498 1.375
MFRV9 9 1.497 2.250