Rochon Polarizer, FOCtek

Rochon polarizer is one of the earliest designs, which is made of two birefringent material prisms cemented together. Both ordinary and extraordinary beams propagate collinearly down the optic axis in the first prism under the ordinary refractive index. Upon entering the second prism the ordinary beam experiences the same refractive index and continues undeviated. The extra-ordinary beam, however, now has a lower refractive index and is refracted at the interface. The angle of refraction is further increased at the birefringent material/air exit surface. Any separation angle can be designed for specific wavelength upon the requirement. The separation angle of standard products vs wavelength is shown in the plot below.

Separation Angular of Standard Products vs Wavelength


a -BBO, 190-3500nm


Quartz, 200-3300nm


YVO4, 400-4000nm

Specifications:

Material:

a -BBO, MgF2, YVO4, Quartz

Wavelength Range:

a -BBO:190-3500 nm, MgF2:130-4000nm,YVO4:400-4000nm,Quartz:200-2300nm

Extinction Ratio:

Quartz:<5x10-5 ; a -BBO, YVO4:<5x10 -6; MgF2:<5x10 -6

Parallelism:

<1 arc Min

 

Surface Quality:

20-10

Beam Deviation:

< 3 arc minutes

Wavefornt Distortion:

l/4@633nm

Damage Threshold:

>500 MW/cm 2

Coating:

Single Layer MgF2

Mount:

Black Anodized Aluminium

WSP Separation Angle

 

RCP5000

RCP6000

RCP8000

RCP9000

130

1.40

 

 

 

150

1.62

 

 

 

170

1.59

 

 

 

190

1.55

13.93

 

 

200

1.53

12.78

 

1.46

266

1.44

9.82

 

1.23

355

1.39

8.80

 

1.12

400

1.37

8.58

13.09

1.09

532

1.35

8.25

11.45

1.04

633

1.34

8.14

10.93

1.03

808

1.33

8.05

10.50

1.01

980

1.32

8.02

10.29

1.00

1064

1.32

8.00

10.22

1.00

1319

1.31

8.01

10.09

1.00

1550

1.30

8.03

10.03

1.00

2000

1.28

8.11

9.96

1.00

2500

1.25

8.23

9.91

 

3000

1.22

8.39

9.88

 

4000

1.13

8.83

9.83

 

5000

1.01

9.43

9.79

 

6000

0.85

 

 

 

 Standard Products

1. a -BBO Rochon Polarizer

Part No.

Extinction Ratio

Separation Angle(°)

C.A.f a (mm)

O.D. f d (mm)

L±0.1(mm)

 
 

RCP6006

<5x10-6

8.0°-14°
8.05°@800nm

6.0

15.0

8.0

 

RCP6008

8.0

25.4

11.0

 

RCP6010

10.0

25.4

13.0

 

RCP6015

15.0

30.0

18.0

 

RCP6020

20.0

38.0

22.0

 

Note: "RFQ" stands for "Request For Quoting".

2. Quartz Rochon Polarizer

Part No.

Extinction Ratio

Separation Angle(°)

C.A. Φ a (mm)

O.D. fΦd (mm)

L±0.1(mm)

 
 

RCP9006

<4x10 -6

1.0°-1.5°
1°@1064nm

6.0

15.0

16.0

 

RCP9008

8.0

25.4

20.0

 

RCP9010

10.0

25.4

25.0

 

RCP9015

15.0

30.0

35.0

 

RCP9020

20.0

38.0

45.0

 

Note: "RFQ" stands for "Request For Quoting".

3. YVO4 Rochon Polarizer

Part No.

Extinction Ratio

Separation Angle(°)

C.A. Φ a (mm)

O.D. Φ d (mm)

L±0.1(mm)

 
 

RCP8006

<5x10 -6

9.8°-13.0°
10°@1064nm

6.0

15.0

8.0

 

RCP8008

8.0

25.4

11.0

 

RCP8010

10.0

25.4

13.0

 

RCP8015

15.0

30.0

18.0

 

RCP8020

20.0

38.0

22.0

 

Note: "RFQ" stands for "Request For Quoting".

4. MgF2 Rochon Polarizer

Part No.

Extinction Ratio

Separation Angle(°)

C.A. Φa (mm)

O.D. Φ d (mm)

L±0.1(mm)

 
 

RCP5006

<5x10-5

1.35°@532 nm

6.0

15.0

16.0

 

RCP5008

8.0

25.4

20.0

 

RCP5010

10.0

25.4

25.0

 

RCP5015

15.0

30.0

35.0

 

RCP5020

20.0

38.0

45.0

 

Note: "RFQ" stands for "Request For Quoting".

Call for OEM quantity pricing and Custom Design Polarizer.
A wide variety of custom design Rochon Polarizer are available upon request
Customer Designed Separation Angle at Certain Wavelength is available upon request
Custom Size Mount is available upon request
AR coated Polarizer is available upon request

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