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Foster Polarizers
Halbo Optics is closed for business - see Homepage
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This range of polarizers combine all the features of the PTBS series of beam splitting Glan Thompson polarizers with orthogonal geometry. The result is a 90° beam splitting polarizer with a wide acceptance field (15°) and high extinction ratio. Note that like conventional Glan Thompsons, they are only suitable for low power applications, limited by the cement bond. As with the PTBS series, there is no chromatic dispersion on the side exit beam angle.
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Mounts
These polarizers are supplied unmounted as free components unless mounting is specified at the time of ordering. The mount design gives open access to all three beams and facilitates occasional cleaning. To specify mounted polarizers, simply add suffix:
M1 for Type 1 mount (shown)
RM4 for Type 4 rotation mount
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Specifications
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Model #
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Aperture (mm)
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L/A Ratio
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Spectral Range (nm)
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Peak Trans. (%)
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Extinc. Ratio
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Beam Dev. (min)
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Flatness @NaD
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Max CW Power (W/cm2)
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Mount Dia. (mm)
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Mount Length (mm)
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PF7
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7
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2.5
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350-2500
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90
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10-5
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<3
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lambda/8
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1
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25.4
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36
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PF10
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10
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2.5
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350-2500
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90
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10-5
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<3
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lambda/8
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1
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25.4
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44
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PF12
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12
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2.5
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350-2500
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90
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10-5
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<3
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lambda/8
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1
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31.8
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49
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PF15
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15
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2.5
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350-2500
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90
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10-5
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<3
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lambda/8
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1
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31.8
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56
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