Our prism-cube Polarizing Beamsplitters consist of AD-Series right-angle prisms cemented together with dielectric coatings on all surfaces. Because these are cemented, they cannot be used with high-energy lasers which may damage the cemented interface.
The p-polarized component is transmitted and the s-polarized is reflected at 90¢ªExtinction ratio of the transmitted p-component and reflected s-component is £¾2000:1.

 

These broadband Polarizers
cover the following spectral ranges.

NOTE : When ordering, specify wavelength,
PSCL-13-NIR for example.

These are polarizing-film type Polarizers sandwiched between protective cover plates : UV grade fused silica for the UV series, and grade A glass for the visible and infrared series.
Our 15mm series are mounted in our standard black-anodized cell, I¢©dia X 0.3¢© thick. A white line scribed on the diameter of one face of the cell indicates the polarizing axis of the plate.
2¢©series are available as the cemented sandwich, or optionally mounted in our H-51-64 Cell.
These can only be used with low powerlasers.
These cannot be used with high power lasers or in proximity with heat sources such as xenon or other lamps.

¥ë: for optional AR coatings, specify wavelength in nm.
Note : Output beams will overlap if Maximum Beam Diameter is exceeded.

We manufacture the classical Rochon Polarizers in crystal quartz and MgF2. Low power only! Damage threshold is complex. Please Inquire.

SPECIAL NOTICE
Significant power limitations must be observed with PVR and PUR models. Do not use with unexpanded laser beams, as power density (beam cross-sectional area) can cause decontacting of polarizer prisms. Subjects is complex, please inquire or request bulletin ¡°Deep UV Polarization¡±.See High Power UV Polarizers below.

N,T option Cell

W option Cell

SPECIAL NOTICE
Polarized input beams can only be used with PVR polarizers.
Unpolarized input beams can be used with either PVR or PUR Polarizers.

CHARACTERISTICS

. Extinction ratiosTransmittance
. Surface flatness
. Transmitted wavefront
. Surface polish

1 x 104 or better85-91%
better than 1/10-wave
better than 1/4-wave
better than 10/5

CHARACTERISTICS

. P-Pol output beam
. Extinction ratios
. Transmittance

. Surface flatness
. Transmitted wavefront
. Surface polish

 

parallel to input beam within 10 minutes.
better than 105.
>95% without AR coatings
(incident beam at ~Brewster's Angle).
better than 1/10 wave.
better than 1/4 wave full aperture.
better than 10/5 wave.
 
 

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

Crystal quartz Wollaston and Rochon prism polarizers are made of two prisms of crystal quartz which are cemented for use from 350 nm to about 2700 nm. These types of polarizers are used for applications where small beam separations are required. The largest beam separations available in standard crystal quartz Wollastons and Rochons are 2 degrees and 1 degree respectively. Smaller beam separations are available on special order. Beam separation is dependent on wavelength.

In a Rochon, one of the prisms needs to have it's optic axis perpendicular to the entrance polished face. Because of optical activity in crystal quartz, the incident beam should first traverse this component. The arrow marked on it's mount indicates the required beam direction in a crystal quartz Rochon. In the case of Wollaston, either of the two polished ends can be used as entrance face of the polarizer. Crystal quartz polarizers have extinction ratio of at least 10-3

A Glan Taylor prism polarizer is made of two calcite prisms which are assembled with air spaced interface. It has a length to aperture ratio of approximately 1.0 which makes it a relatively thinner polarizer. It is made of UV selected calcite. A 10mm thick calcite plate having 50% or less absorption at 250nm is considered UV selected. Spectral range of a Glan Taylor polarizer is from 250-2300nm. Below 250nm, transmission cut off wavelength varies from crystal to crystal.

A UV Glan Thompson prism polarizer is made of two calcite prisms which are cemented together with UV transmitting cement. It has a length to aperture ratio of approximately 2.0 : 1. It is made of UV selected calcite. A 10 mm thick calcite plate having 50% or less absorption at 250 nm is considered UV selected. Spectral range of UV Glan Thompson is from 250-2300 nm. Below 250 nm, transmission cut off wavelength varies from crystal to crystal.

A Glan Thompson prism polarizer is made of two calcite prisms which are cemented together. Two types of Glan Thompsons are available. One is called standard form and the other long form. Their length to aperture ratios are 2.5:1 and 3.0:1 respectively. Glan Thompsons tend to have higher extinction ratio than air spaced polarizers. In the ultra violet spectrum, their transmission is limited by absorption in calcite as well as cemented interface. These polarizers can be used from about 350 to 2300 nm.

A Glan Laser prism polarizer is made of two calcite prisms which are assembled with air spaced interface. This polarizer is a modification of Glan Taylor type and is designed to have less reflection loss at the prism junction. Glan Laser polarizer is available with none, one and two escape windows. The one without escape windows is made for low energy lasers. The escape windows allow the rejected ordinary beam to escape out of the polarizer which makes it more desirable for high energy lasers. Unlike a Glan Taylor, a Glan Laser is made of non UV calcite except by special order and is for use in the visible and near IR spectrum up to 2.3 microns. Angular polarized field of this polarizer is non symmetrical to the normal to entrance face and is dependent on wavelength e.g. at 1.4 microns, semipolarized field of a Glan Laser becomes almost zero on one side and 7 degrees on the other side of the normal. Therefore, for use at wavelengths longer than 1.4 microns, the polarizer should be tilted appropriately.

SPECIFICATIONS

*20 n-s pulses, 20 Hz

When ordering, specify wavelength, for example PE-10-VIS.

SPECIFICATIONS

*20 n-s pulses, 20 Hz

When ordering, specify wavelength, for example PEH-10-YAG. 20 n-s pulses, 20Hz.

SPECIFICATIONS

*20 n-s pulses, 20 Hz
¥ë: When ordering, specify wavelength, for example PQ-15-1053.