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Photonics West
27.01.- 01.02.2018
Visit us at
Photonics West in San Francisco
Booth 4529


Hanle Wedge Depolarizers

Hanle Wedge Depolarizers

The depolarizer consists of two wedges joined by optical contact. One of the wedges is made from birefringent crystalline quartz and generates a variation of the output polarization over the varying thickness of the wedge. The other is made from non-birefringent fused silica and compensates for the prismatic deviation. When illuminated with a spatially expanded beam the output polarization varies over the beam diameter and on average the light appears unpolarized. Since the birefringent wedge introduced a polarization dependent double refraction the light is split in two slightly divergent polarized beams at the output. The full divergence angle is about 4'.

To achieve best result the beam diameter should be larger than 5 mm. Furthermore, the wedge must be oriented at 45° with respect to the polarization of the input beam. It is advisable to optimize this orientation by minimizing the residual polarization in the setup.

We can provide the prisms either unmounted or set into a rotation mount. The holder is equipped with a mounting pin for integration. By default, the prisms are not antireflection coated.

Optical specifications

material synthetic quartz / fused silica
spectral range 180-2200 nm
recommended beam diameter >5 mm
wavefront distortion <l/10
angular separation 4’
connection of the prisms optical contact (no cement)

Standard dimensions

format
10 mm 15 mm 20 mm 25 mm
Article-No. mount:
PDH 10 PDH 15 PDH 20 PDH 25
Article-No. unmount:
PDH 10.0 PDH 15.0 PDH 20.0 PDH 25.0
free aperture [mm] 9 14 19 24
center thickness [mm] 6 6 8 8
mount diameter [mm] 30 30 36 38
mount length [mm] 21 21 24 24

Price mount version

Art.-No. 1 pieces in € 2-5 pieces in € 6-10 pieces in €
PDH 10 563,- 510,- 450,-
PDH 15 754,- 693,- 622,-
PDH 20 1020,- 927,- 840,-
PDH 25 1158,- 1052,- 954,-

Price unmount version

Art.-No. 1 pieces in € 2-5 pieces in € 6-10 pieces in €
PDH 10.0 476,- 431,- 380,-
PDH 15.0 672,- 617,- 554,-
PDH 20.0 932,- 846,- 767,-
PDH 25.0 1048,- 951,- 863,-

Price custom version

version aus MgF2 auf Anfrage
geeignet for den Bereich 125-7000 nm


AR-Coating auf Anfrage