Broadband Glan Thompson Polarizer is made of two α-BBO prisms cemented together. Unlike other types of α-BBO polarizer and Calcite Polarizer which are used from about 190 nm to 900 nm and 350 nm to 2300 nm respectively, this broadband polarizer has a wide rang of wavelength from 200nm to 3300nm. Also the broadband polarizer has a wide acceptance angle whose field angle Fo and Fe is shown in below figure.
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Angular Field vs wavelength
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Transmission (T%) vs Wavelength
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Material:
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α-BBO
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Flatness: |
λ/4@633nm
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WavelengthRange:
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190～3300 nm
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Damage Threshold:
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>200 MW/cm2
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Ectinction Ratio:
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<5x10-6
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Coating:
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Single MgF2
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Surface Quality:
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20-10
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Mount:
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Black Anodized Aluminium
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Beam Deviation:
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Typical: <3', High Precision: <3"
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| P/N# | Extinction Ratio | Angular Field (deg) | CA φa (mm) | O.D. φd (mm) | L+/-0.1 (mm) |
| GMP6206 | <5x10-6 | See above | 5 | 15 | 14 |
| GMP6208 | 7 | 25.4 | 17 | ||
| GMP6210 | 9 | 25.4 | 21 | ||
| GMP6212 | 11.4 | 25.4 | 26 | ||
| GMP6215 | 13.5 | 30 | 31 | ||
| GMP6220 | 18 | 38 | 40 |