Rochon Polarizers
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..
Rochon Polarizers
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.
 a -BBO, 190-3500nm |
 Quartz, 200-3300nm |
 YVO4, 400-4000nm |
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Material:
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a-BBO, Quartz,YVO4,MgF2
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Wavelength Range:
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a-BBO:190-3500nm, Quartz:200-2300 nm ;YVO4:400-4000nm
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Extinction Ratio:
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a-BBO:<5x10-6 ; Quartz:<5x10-5 ;YVO4:<5x10-6
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Parallelism:
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<1 arc Min
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Surface Quality:
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20/10
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Beam Deviation:
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< 3 arc minutes
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Wavefornt Distortion:
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λ/4@632.8nm
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Damage Threshold:
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>500 MW/cm2
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Coating:
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Single MgF2
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Mount:
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Black Anodized Aluminium
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Wavelength range
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RHP7000
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RHP5000
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RCP9000
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RCP8000
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|
130
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1.40
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|
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|
150
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1.62
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|
|
|
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170
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1.59
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|
|
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190
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1.55
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13.93
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200
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1.53
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12.78
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1.46
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|
266
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1.44
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9.82
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1.23
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355
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1.39
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8.80
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1.12
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400
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1.37
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8.58
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13.09
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1.09
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|
532
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1.35
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8.25
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11.45
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1.04
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633
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1.34
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8.14
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10.93
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1.03
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808
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1.33
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8.05
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10.50
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1.01
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980
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1.32
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8.02
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10.29
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1.00
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1064
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1.32
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8.00
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10.22
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1.00
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1319
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1.31
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8.01
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10.09
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1.00
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1550
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1.30
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8.03
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10.03
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1.00
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2000
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1.28
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8.11
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9.96
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1.00
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2500
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1.25
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8.23
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9.91
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3000
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1.22
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8.39
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9.88
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4000
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1.13
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8.83
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9.83
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5000
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1.01
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9.43
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9.79
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6000
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0.85
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Part No.
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Extinction Ratio
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Separation Angle(°)
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C.A. fa(mm)
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O.D.
fd(mm) |
L ±0.1(mm)
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RHP5006
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<5x10-6
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8.0°-14°
8°@ 800nm |
6.0
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15.0
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14.0
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RHP5008
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8.0
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25.4
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16.0
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||
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RHP5010
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10.0
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25.4
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18.0
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||
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RHP5015
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15.0
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30.0
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23.0
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||
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RHP5020
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20.0
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38.0
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28.0
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Part No.
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Extinction Ratio
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Separation Angle(°)
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C.A. fa(mm)
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O.D.
fd(mm) |
L ±0.1(mm)
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RHP8006
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<4x10-6
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1.0°-1.5°
1°@980nm |
6.0
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15.0
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36.0
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RHP8008
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8.0
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25.4
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46.0
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||
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RHP8010
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10.0
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25.4
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28.0
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||
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RHP8015
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15.0
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30.0
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38.0
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||
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RHP8020
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20.0
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38.0
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48.0
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Part No.
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Extinction Ratio
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Separation Angle(°)
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C.A. fa(mm)
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O.D.
fd(mm) |
L ±0.1(mm)
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RHP9006
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<5x10-6
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9.8°-13.0°
10°@ 1550nm |
6.0
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15.0
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14.0
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RHP9008
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8.0
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25.4
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16.0
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||
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RHP9010
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10.0
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25.4
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16.0
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RHP9015
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15.0
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30.0
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20.0
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RHP9020
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20.0
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38.0
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25.0
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