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


Mica Retarders

Mica Retarders

Mica retarders are very thin laminae which are cleaved off from a block. The resulting sheets are zero order retarders consisting just of a single piece of crystal.

Mica is a natural mineral and exhibits a noticeable absorption which becomes more pronounced at short wavelengths.

The thin mica sheets are cemented between two polished cover glasses made of N-BK7.

The plates can be ordered unmounted or with a cylindrical holder. An antireflection coating is available as an option.

We offer mica retarders either with half wave or quarter wave retardation. The plates are manufactured for a single design wavelength inside the spectral transmission range which has to be specified on the order.

Optical specifications

material mica
transmission range 400-2000 nm
tolerance of the path difference ± 10 nm
wavefront distortion <λ/10
marked direction fast axis
prismatic deviation <1'
temperature coefficient* a/R0(typ.) 3∙10-4/K
angular coefficient* b/R0 (typ.) 10-3/deg²

* Definition

Prices

Diameter
10 mm 15 mm 20 mm 25 mm 30mm 40 mm 50 mm
thickness with cover plates [mm] 4 5 6 8 8 10 14
mount diameter [mm] 25 25 30 30 35 45 55
mount length [mm] 10 10 15 15 15 15 20
Art. No., retardance λ/2
RZG 2.10 RZG 2.15 RZG 2.20 RZG 2.25 RZG 2.30 RZG 2.40 RZG 2.50
Art. No., retardance λ/4
RZG 4.10 RZG 4.15 RZG 4.20 RZG 4.25 RZG 4.30 RZG 4.40 RZG 4.50

Prices

Art.-No. 1 pieces in € 2-5 pieces in € 6-10 pieces in €
RZG 2.10 211,- 200,- 191,-
RZG 2.15 252,- 239,- 228,-
RZG 2.20 306,- 288,- 274,-
RZG 2.25 358,- 339,- 322,-
RZG 2.30 411,- 387,- 368,-
RZG 2.40 481,- 454,- 433,-
RZG 2.50 570,- 537,- 510,-

Prices

Art.-No. 1 pieces in € 2-5 pieces in € 6-10 pieces in €
RZG 4.10 211,- 200,- 191,-
RZG 4.15 252,- 239,- 228,-
RZG 4.20 306,- 288,- 274,-
RZG 4.25 358,- 339,- 322,-
RZG 4.30 411,- 387,- 368,-
RZG 4.40 481,- 454,- 433,-
RZG 4.50 570,- 537,- 510,-

Price custom version

Fassungen bis Diameter 30 mm Art. No. RZG 0.30
Stückpreis
Fassungen ab Diameter 40 mm Art. No. RZG 0.40
Stückpreis
AR-Coating, R<0,8% im Bereich 400-700 nm Art. No.: RZG 1.02
Stückpreis
Größere Diameter (bis 250 mm) auf Anfrage
Uncementede micaplättchen auf Anfrage