Wollaston Polarizers
Wollaston polarizers consist of two identically shaped prisms made from a birefringent crystal. The crystal axes of the two prisms have orthogonal orientation. This results in a deviation of the beams having ordinary and the extraordinary, respectively by approximately the same angle but with opposite sign. In Wollaston polarizers both output beams show a high extinction ratio over the entire transmission range. The directions of polarization are parallel and orthogonal to the splitting plate, respectively.
We provide the Wollaston prisms by default in a cylindrical holder and without antireflection coating.
Wollaston prisms are available from calcite as well as from quartz. For both crystals we use material free of striae and bubbles. Calcite allows to achieve larger splitting angles between the two output beams (standard angles: 5°, 10° and 20°) . For quartz the splitting angles are smaller owing to the lower birefringence (standard angles: 0,5° and 1°). The advantages of quartz are the better transmission in the deep UV as well as the availability of larger dimensions.
The given splitting angles always refer to the full angle between the beams at the output.
Optical specifications
material | calcite | quartz |
spectral range | 350-2200 nm | 230-2800 nm |
extinction ratio | 10-6 | 10-5 |
wavefront distortion | <λ/2 | <λ/5 |
angular separation | 5° / 10° / 20° | 0,5° / 1,0° |
connection of the prisms | cemented | optical contact (no cement) |
Splitting angle 5°
Optical specifications
format | |
10 mm | 15 mm | 20 mm | 25 mm |
Article-No.: | PWK 5.10 | PWK 5.15 | PWK 5.20 | PWK 5.25 | |
free aperture | [mm] | 9,5 | 14,5 | 19,5 | 24,5 |
Length | [mm] | 4,5 | 6,0 | 7,0 | 8,5 |
cut angle | [°] | 14° | 14° | 14° | 14° |
mount diameter | [mm] | 25 | 25 | 30 | 40 |
mount length | [mm] | 10 | 11 | 12 | 15 |
Prices
order no. | 1 piece in € | 2-5 piece in € | 6-10 piece in € |
---|---|---|---|
PWK 5.10 | 966.- | 881.- | 785.- |
PWK 5.15 | 1408.- | 1290.- | 1155.- |
order no. | 1 piece in € | 2 piece in € | 3-5 piece in € |
PWK 5.20 | 1863.- | 1696.- | 1562.- |
PWK 5.25 | 3016.- | 2650.- | 2358.- |
Splitting angle 10°
Optical specifications
format | |
10 mm | 15 mm | 20 mm | 25 mm |
Article-No.: | PWK 10.10 | PWK 10.15 | PWK 10.20 | PWK 10.25 | |
free aperture | [mm] | 9,5 | 14,5 | 19,5 | 24,5 |
Length | [mm] | 7,0 | 9,5 | 12,0 | 14,5 |
cut angle | [°] | 26,5° | 26,5° | 26,5° | 26,5° |
mount diameter | [mm] | 25 | 25 | 30 | 40 |
mount length | [mm] | 15 | 15 | 20 | 21 |
Prices
order no. | 1 piece in € | 2-5 piece in € | 6-10 piece in € |
---|---|---|---|
PWK 10.10 | 1000.- | 912.- | 812.- |
PWK 10.15 | 1489.- | 1365.- | 1222.- |
order no. | 1 piece in € | 2 piece in € | 3-5 piece in € |
PWK 10.20 | 2057.- | 1872.- | 1725.- |
PWK 10.25 | 3394.- | 2983.- | 2653.- |
Splitting angle 20°
Optical specifications
format | |
10 mm | 15 mm | 20 mm | 25 mm |
Article-No.: | PWK 20.10 | PWK 20.15 | PWK 20.20 | PWK 20.25 | |
free aperture | [mm] | 9,5 | 14,5 | 19,5 | 24,5 |
Length | [mm] | 12,0 | 17,0 | 22,0 | 27,5 |
cut angle | [°] | 45,0° | 45,0° | 45,0° | 45,0° |
mount diameter | [mm] | 25 | 25 | 30 | 40 |
mount length | [mm] | 18 | 22 | 28 | 35 |
Prices
order no. | 1 piece in € | 2-5 piece in € | 6-10 piece in € |
---|---|---|---|
PWK 20.10 | 1068.- | 974.- | 867.- |
PWK 20.15 | 1663.- | 1524.- | 1364.- |
order no. | 1 piece in € | 2 piece in € | 3-5 piece in € |
PWK 20.20 | 2445.- | 2226.- | 2050.- |
PWK 20.25 | 4213.- | 3703.- | 3294.- |
Splitting angle 0,5°
Optical specifications
format | |
10 mm | 15 mm | 20 mm | 25 mm | 30 mm | |
Article-No:: | PWQ 30.10 | PWQ 30.15 | PWQ 30.20 | PWQ 30.25 | PWQ 30.30 | ||
free aperture | [mm] | 9,5 | 14,5 | 19,5 | 24,5 | 29,5 | |
Length | [mm] | 8,0 | 10,0 | 13,5 | 16,0 | 18,5 | |
cut angle | [°] | 25,5° | 25,5° | 25,5° | 25,5° | 25,5° | |
mount diameter | [mm] | 25 | 25 | 30 | 40 | 50 | |
mount length | [mm] | 15 | 15 | 20 | 21 | 25 | |
Prices
order no. | 1 piece in € | 2-5 piece in € | 6-10 piece in € |
---|---|---|---|
PWQ 30.10 | 813.- | 753.- | 686.- |
PWQ 30.15 | 1059.- | 978.- | 885.- |
PWQ 30.20 | 1359.- | 1249.- | 1125.- |
order no. | 1 piece in € | 2 piece in € | 3-5 piece in € |
PWQ 30.25 | 2068.- | 1904.- | 1773.- |
PWQ 30.30 | 2329.- | 2144.- | 1996.- |
Splitting angle 1°
Optical specifications
format | |
10 mm | 15 mm | 20 mm | 25 mm | 30 mm | |
Article-No.: | PWQ 60.10 | PWQ 60.15 | PWQ 60.20 | PWQ 60.25 | PWQ 60.30 | ||
free aperture | [mm] | 9,5 | 14,5 | 19,5 | 24,5 | 29,5 | |
Length | [mm] | 12,5 | 17,5 | 23 | 27,5 | 32 | |
cut angle | [°] | 43,5° | 43,5° | 43,5° | 43,5° | 43,5° | |
mount diameter | [mm] | 25 | 25 | 30 | 40 | 50 | |
mount length | [mm] | 18 | 22 | 28 | 35 | 38 | |
Prices
order no. | 1 piece in € | 2-5 piece in € | 6-10 piece in € |
---|---|---|---|
PWQ 60.10 | 887.- | 826.- | 757.- |
PWQ 60.15 | 1131.- | 1059.- | 977.- |
PWQ 60.20 | 1502.- | 1402.- | 1287.- |
order no. | 1 piece in € | 2 piece in € | 3-5 piece in € |
PWQ 60.25 | 2272.- | 2137.- | 2028.- |
PWQ 60.30 | 2665.- | 2506.- | 2379.- |
Price custom version
custom splitting angle | on request |
antireflection coating | on request |
unmount prisms | on request |
polarisation under ±45° by cutting the prisms with an angle ±45° betweenthe crystal axes and the wedge direction one achieves an acording rotation of the output polarization |
on request |
connection with Thorlabs SM1 or SM2 thread | on request |