Glan Thompson Polarizer
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China Equipment goods
Equipment goods

Glan Thompson Polarizer

Quantity : 999

Glan Thompson polarizer is made of two calcite prisms or a -BBO prisms cemented together. Two types of Glan Thompsons are available. One is the standard form and the other is the 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 birefriengent materials as well as the cement layer. a -BBO polarizers and Calcite polarizers can be used from about 220 to 900nm and 350 to 2300 nm respectively.

The polarizers have the widest field angle of any design. The standard form of this polarizer with 2.5: 1 length to aperture ratio has a full acceptance cone angle of more than 15 ° @ 589nm, symmetric about the input axis, whilst the long form with 3: 1 ratio has a field angle >26 ° . The polarized field F1 and F2 of all these is shown in the plot below.


Angular Field vs Wavelength

Specifications

Material
a -BBO or Calcite
Wavelength Range
a -BBO: 200-3500 nm, Calcite: 350-2300 nm
Extinction Ratio
a -BBO: <5x10 -6 , Calcite: <5x10-5 </div>
Parallelism
<1 arc Min</div>
Surface Quality
20/10
Beam Deviation
< 3 arc minutes
Wavefornt Distortion
l/4@633nm
Damage Threshold
>500 MW/cm2
Coating
Single Layer MgF2
Mount
Black Anodized Aluminium
1. Calcite Glan Thompson Polarizer(350-2300nm)
Part NO.
L/CA
ExtinctionRatio
Angular Field
C.A.φa
(mm)
O.D.φd
(mm)
L(mm)
PGM2106
2.5
<5×10-5</div>
>14~16°
6.0
15.0
22.0
PGM2108
8.0
25.4
28.0
PGM2110
10.0
25.4
33.0
PGM2112
12.7
25.4
39.0
PGM2115
15.0
30.0
45.5
PGM2206
3.0
<5×10-5</div>
>25~28°
6.0
15.0
26.0
PGM2208
8.0
25.4
32.0
PGM2210
10.0
25.4
38.0
PGM2212
12.7
25.4
46.0
PGM2215
15.0
30.0
53.0
2. a-BBO Glan Thompson Polarizer (200-1100nm)
Part NO.
L/CA
Extinction Ratio
Angular Field
C.A. φa
(mm)
O.D.φd
(mm)
L(mm)
PGM1006
1.6
<5×10-6</div>
>15°
6.0
15.0
22.0
PGM1008
8.0
25.4
28.0
PGM1010
10.0
25.4
33.0
PGM1012
12.7
25.4
39.0
PGM1015
15.0
30.0
45.5

Location : 118 Yangqiao Road West,Fuzhou,350002,P.R.China, china fujian ,
Contact : amiee ye,

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