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Glan Laser Polarizers

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Glan Laser Polarizers

Glan Laser prism polarizer  is made of two same birefringent material prisms that are assembled with  an air space. The polarizer is a modification of the Glan Taylor type  and is designed to have less reflection loss at the prism junction. The  polarizer with two escape windows allows the rejected beam to escape out  of the polarizer, which makes it more desirable for high energy lasers.  The surface quality of these faces is relatively poor compare to that  of entrance and exit faces. No scratch and dig surface quality  specifications are assigned to these faces. The polarized field F1 and  F2 of these is shown in the plot below.


Angular Field vs Wavelength


            a -BBO, 200-300nm


            a -BBO, 300-700nm


            a -BBO, 700-3000nm


            Calcite, 350-2300nm


              YVO4, 500-4000nm


Features:

Air-spaced
Close to Brewster's Angle Cutting. 
High Polarization Purity. 
Short Length. 
Suitable for low to medium power application where the rejected beam is not required.


Specifications

Material

a-BBO, Calcite or YVO 4

Wavelength Range

a-BBO: 200-3500 nm,   Calcite: 350-2300 nm, YVO 4 : 500-4000 nm

Extinction Ratio

Calcite:<5x10-5 ;   a-BBO:<5x10-6 ; YVO 4 :<5x10-6

Parallelism

<1 arc Min

Surface Quality

20-10

Beam Deviation

< 3 arc minutes

Wavefront Distortion

λ /4@633nm

Damage Threshold

>200 MW/cm2

Coating

Single MgF2

Mount

Black Anodized Aluminum

Standard Products

Part No.

Wavelength
            Rang(nm)

Extinction Ratio

Angular
            Field(°)

C.A. f a (mm)

O.D. f d (mm)

L ±0.1(mm)

GLP6206

200-300

<5x10-6

>6.0

6.0

15.0

29.0

GLP6208

8.0

25.4

31.0

GLP6210

10.0

25.4

31.0

GLP6215

15.0

30.0

38.6

GLP6220

20.0

38.0

48.9

GLP6306

300-700

<5x10-6

>6.0

6.0

15.0

25

GLP6308

8.0

25.4

25

GLP6310

10.0

25.4

26.0

GLP6315

15.0

30.0

33.4

GLP6320

20.0

38.0

43.6

GLP6706

700-3000

<5x10-6

>6.0

6.0

15.0

23.0

GLP6708

8.0

25.4

24.7

GLP6710

10.0

25.4

25.9

GLP6715

15.0

30.0

33.0

GLP6720

20.0

38.0

43.6

GLP7006

350-2300

<5x10-6

>7.7

6.0

15.0

21.0

GLP7008

8.0

25.4

24.5

GLP7010

10.0

25.4

26.2

GLP7015

15.0

30.0

33.3

GLP7020

20.0

38.0

42.3

GLP8006

500-4000

<5x10-6

>6.5

6.0

15.0

15.5

GLP8008

8.0

25.4

19

GLP8010

10.0

25.4

22.5

GLP8015

15.0

30.0

31.0

Note: Other sizes and coatings are available upon requirements.

 


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