Glan-Thompson Polarizing Prisms

Glan-Thompson_Polarisationsprismen_Zeichnung

The prisms are produced from calcite of selected quality which is practically striae- and bubble-free. This grants an extraordinary high extinction ratio over a broad spectral range. The polarizers consist of two prisms joined by optical cement. The ordinary polarized beam experiences total internal reflection and the interface to the cement layer. The side surfaces are coated with black varnish to absorb the reflected o beam.

The prisms are available in a mounted and an unmounted version. The transmitted polarization of our prisms is oriented at 45° with respect to the edges which is of particular importance when integrating unmounted prisms.

The polarizers are not antireflection coated by default.

General specificationsto top

version
short version
simple version
long version
UV version
spectral range 350-2700 nm 400-2700 nm 350-2700 nm 250-2700 nm
extinction ratio 10-6 10-5 10-6 10-6
wavefront distortion /4 <1λ /4 /4
prismatic deviation <2' <5' <2' <2'
width-to-length ratio 1:2 1:2 1:3 1:1,8
cut angle 67,5° 67,5° 73° 64°
field of view ±6° ±6° ±15° ±9°

The Glan-Thompson prisms are available in four versions. The short version is suited for most applications. It provides a high extinction ratio, high transmission and low wavefront distortion in the visible and infrared spectral range.

The simple version has the same geometrical shape as the short version. By reducing the specifications for the usable spectral range, the extinction ratio and the wavefront distortion we can achieve a very competitive price. Nevertheless, these prisms are high quality polarizers with specifications exceeding those of alternative models.

For the long version the crystals are cut at a larger angle. By this the prisms maintain their polarizing properties even at higher angles of incidence. Therefore, the long version is particularly suited for applications involving strongly divergent or convergent light. The other properties are identical to those of the short version.

For the UV version we select calcite with the highest available UV transmission. The prisms are joined with a UV transparent cement. By this means the prisms become suited for the ultraviolet spectral range starting above 250 nm.  The other specifications are the same as the ones given for the standard quality prisms described above. For high powers in the UV we recommend to use Glan prisms with air gap.

Short versionto top

version
5,5 mm 8 mm 10 mm 12 mm 15mm
cross section [mm²] 5,5 x 5,5 8 x 8 10 x10 12 x12 15 x 15
length [mm] 11
16
20
24
30
usable aperture [mm²] 5,0 x 4,5 7,5 x 6,6 9,5 x 8,2 11,5 x 9,8 14,5 x 12,6
Fassungsdurchmesser [mm] 16
16(25)
25
25
25
mount length [mm] 18
22
28
30
36
mount aperture [mm] 5,0
7,5
9,5
11,5
14,5
order no., unmounted
PGT 2.05.0 PGT 2.08.0 PGT 2.10.0 PGT 2.12.0 PGT 2.15.0
price 1 piece [EUR] € 287
€ 416
€ 675
€ 1045
€ 2040
price 2-5 piece [EUR] € 278
€ 394
€ 652
€ 1006
€ 1965
price 6-10 piece [EUR] € 266
€ 362
€ 618
€ 947
€ 1851
order no., mounted
PGT 2.05 PGT 2.08(05)* PGT 2.10 PGT 2.12 PGT 2.15
price 1 piece [EUR] € 380
€ 499
€ 764
€ 1129
€ 2134
price 2-5 piece [EUR] € 369
€ 473
€ 738
€ 1086
€ 2055
price 6-10 piece [EUR] € 352
€ 435
€ 699
€ 1023
€ 1936
* This size is available with mount diameters of 16 mm and 25 mm (option .05).

Simple versionto top

version
5,5 mm 8 mm 10 mm 12 mm 15mm
cross section [mm²] 5,5 x 5,5 8 x 8 10 x10 12 x12 15 x 15
length [mm] 11
16
20
24
30
usable aperture [mm²] 5,0 x 4,5 7,5 x 6,6 9,5 x 8,2 11,5 x 9,8 14,5 x 12,6
Fassungsdurchmesser [mm] 16
16(25)
25
25
25
mount length [mm] 18
22
28
30
36
mount aperture [mm] 5,0
7,5
9,5
11,5
14,5
order no., unmounted
PGT 3.05.0 PGT 3.08.0 PGT 3.10.0 PGT 3.12.0 PGT 3.15.0
price 1 piece [EUR] € 202
€ 269
€ 427
€ 625
€ 1243
price 2-5 piece [EUR] € 196
€ 256
€ 412
€ 602
€ 1197
price 6-10 piece [EUR] € 187
€ 235
€ 391
€ 567
€ 1128
order no., mounted
PGT 3.05 PGT 3.08(.05)* PGT 3.10 PGT 3.12 PGT 3.15
price 1 piece [EUR] € 296
€ 353
€ 515
€ 709
€ 1336
price 2-5 piece [EUR] € 287
€ 334
€ 498
€ 682
€ 1287
price 6-10 piece [EUR] € 274
€ 307
€ 472
€ 642
€ 1213
* This size is available with mount diameters of 16 mm and 25 mm (option .05).

Long versionto top

version
8 mm 10 mm 12 mm
cross section [mm²] 8 x 8 10 x 10 12 x 12
length [mm] 24
30
36
usable aperture [mm²] 7,5 x 7,2 9,5 x 9,0 11,5 x 10,8
Fassungsdurchmesser [mm] 16(25)
25
25
mount length [mm] 30
38
42
mount aperture [mm] 7,5
9,5
11,5
order no., unmounted
PGT 1.08.0 PGT 1.10.0 PGT 1.12.0
price 1 piece [EUR] € 526
€ 830
€ 1508
price 2-5 piece [EUR] € 508
€ 814
€ 1456
price 6-10 piece [EUR] € 481
€ 791
€ 1462
order no., mounted
PGT 1.08(05)* PGT 1.10 PGT 1.12
price 1 piece [EUR] € 609
€ 913
€ 1559
price 2-5 piece [EUR] € 588
€ 896
€ 1544
price 6-10 piece [EUR] € 557
€ 871
€ 1462
* This size is available with mount diameters of 16 mm and 25 mm (option .05).

UV versionto top

version
8 mm 10 mm 12 mm 15mm
cross section [mm²] 8 x 8 10 x 10 12 x 12 15 x 15
length [mm] 13,5
17,5
21,5
27,0
usable aperture [mm²] 7,5 x 6,5 9,5 x 8,5 11,5 x 10,4 14,5 x 13,0
Fassungsdurchmesser [mm] 16(25)
25
25
25
mount length [mm] 22
28
30
36
Fassungsöffnung [mm] 7,5
9,5
11,5
14,5
order no., unmounted
PGT 4.08 PGT 4.10.0 PGT 4.12.0 PGT 4.15.0
price 1 piece [EUR] € 844
€ 1165
€ 1574
€ 2642
price 2-5 piece [EUR] € 813
€ 1128
€ 1515
€ 2538
price 6-10 piece [EUR] € 779
€ 1074
€ 1427
€ 2383
order no., mounted
PGT 4.08(05)* PGT 4.10 PGT 4.12 PGT 4.15
price 1 piece [EUR] € 937
€ 1258
€ 1658
€ 2730
price 2-5 piece [EUR] € 909
€ 1219
€ 1596
€ 2623
price 6-10 piece [EUR] € 865
€ 1160
€ 1502
€ 2462

* This size is available with mount diameters of 16 mm and 25 mm (option .05).


Rotation mountto top

For angular orientation these prisms can be mounted in the Rotating Mounts.

Options and custom versionsto top


Option Best. Nr. Aufpreis
interferometer quality ( wavefront deviation < λ/10) PGT 0.1 additional price 15%
prismatic deviation < 5' PGT 0.2 € 312
extinction ratio < 10-7 PGT 0.7 additional price 15%
extinction ratio < 10-8 PGT 0.8 additional price 30%
anti reflection coating
on request on request

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