as a pioneer in mining of calcite, Karl Lambrecht founded the company in
1933. He was instrumental in developing manufacturing methods which led to
calcite's widespread use as an undisputed highest extinction polarizer
during all these years. For
his contribution, he was awarded the 1975 David Richardson medal by the
Optical Society of America.
Karl Lambrecht Corporation has
evolved to specialize in fabricating high quality optical components made
of birefringent crystals of calcite, quartz, magnesium fluoride, mica etc.
We fabricate several different polarization components of various
apertures as standard catalog parts. Special custom made parts are also fabricated per specifications / drawings supplied by customers. Following
is a brief description of what is available from us. Details of these are
given on various pages on this website, the links to which are provided on
the left hand column on each page.
/ BEAM SPLITTING POLARIZERS made of crystals of calcite, quartz or
magnesium fluoride e.g. Glan Taylor, Glan Laser, Glan Thompson, UV Glan
Thompson, Glan Laser Brewster Angle, Glan Thompson Beam Splitting, Glan
Laser Beam Combining / Splitting, Rochon, Wollaston, Beam Displacer, IR
Calcite Plate and custom polarizers per given specifications for general,
vacuum or space applications are available.
WAVE PLATES of quarter and half wave retardation for a specified
wavelength between .150 and 6.0 micrometers made of crystals of quartz,
magnesium fluoride or mica are available. Eighth wave retarders and non-standard larger
aperture waveplates for general, vacuum or space applications are
available on special order. Also available are fixed crystal quartz
rotators to rotate the plane of polarization by 45 or 90 degrees for a
specified wavelength between .2 to 2.0 microns including differential
rotators which rotate the plane of polarization of each of two normal
incident superimposed beams of different wavelengths by a predetermined
rotation angle. Special rotators are
available upon request.
RETARDERS of quarter and half wave retardation of crystal quartz
/ magnesium fluoride two plate design, Fresnel rhomb broad band retarders
and variable thickness Babinet Soleil Compensators are available as
standard products. In quartz / magnesium fluoride configuration, larger
apertures and retardations optimized for non-standard wavelength regions
are available on special order. These can be made for general, vacuum and
made of crystals of calcite, quartz or magnesium fluoride for single or
narrow wavelength region ( monochromatic ) and broad wavelength region (
polychromatic ) are available in single wedge, double wedge, multi-order retarder and double plate Lyot type designs in standard and non standard
FILM BEAM SPLITTING POLARIZING CUBES for various narrow and broad
wavelength regions are available. Also available are larger displacement (
larger than that provided by calcite beam displacers ) beam displacers (
using two polarizing cubes ) and optical isolators ( using a polarizing
cube with a quarter waveplate cemented to the cube with it's fast axis at
45 degrees to the output -p polarization ). Anti-reflection coatings on
some customer supplied substrates are also available.
PRISMS of SF6 optical glass and
rutile crystal are available in
standard sizes only.