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Polarizing Beam Combiners
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Because a conventional Glan Taylor polarizer exhibits chromatic angular dispersion of the side exiting beam, it can only be used in reverse mode as a beam combiner if both beams are the same wavelength. Otherwise, the two combined beams exiting will not be collinear. If the beam entering from the side has a varying wavelength, or is composed of several beams of different colours, then the polarizing beam combiner with side entrance surface normal to the beam is required to ensure all beams exiting are collinear.
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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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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 Peak Power (MW/cm2)
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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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PBC10
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10
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220-2600
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88
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10-5
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<3
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lambda/8
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200
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100
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25.4
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32
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PBC12
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12
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220-2600
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88
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10-5
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<3
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lambda/8
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200
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100
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25.4
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34
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PBC15
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15
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220-2600
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88
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10-5
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<3
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lambda/8
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200
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100
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31.8
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38
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PBC20
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20
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220-2600
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88
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10-5
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<3
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lambda/8
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200
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100
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38.1
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44
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