2-BBMP-H2-18 - CaF2 Broad band, Holographic MidIR Polariser, 18 mm clear aperture, Ø25 mm mount

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2-BBMP-H2-18 - CaF2 Broad band, Holographic MidIR Polariser, 18 mm clear aperture, Ø25 mm mount
US$1,430.00
A fine array of parallel conducting wires whose period is smaller compared to the wavelength of incident radiation will transmit one polarisation and reflect the other. The component of the radiation whose electric vector is perpendicular to the direction of the wires and induces current in the wires will be transmitted and the parallel vector reflected. Altechna's Mid-IR polarizers are produced by holographic method (i.e. laser interferometry) or mechanically ruled. These polarisers do not suffer from beam displacement, are not affected by diverging or converging beam, have wide acceptance angle without degradation of performance and portable.
Clear Aperture, mm 18
Extinction Ratio 150:1 @ 3 um; 300:1 @ 8 um
Material CaF2
Mount Diameter, mm 25
Polarization degree 98,4%@3um ; 99,4%@8um
Product Name 2-BBMP-H2-18
Transmission efficiency (k1>85%; k2<0,7%)@3um ; (k1>80%; k2<0,24%)@8um
Type Holographic
Wavelength Range, nm 1 - 10um
Delivery 2-4 weeks
Description

Details

A fine array of parallel conducting wires whose period is smaller compared to the wavelength of incident radiation will transmit one polarisation and reflect the other. The component of the radiation whose electric vector is perpendicular to the direction of the wires and induces current in the wires will be transmitted and the parallel vector reflected. Altechna's Mid-IR polarizers are produced by holographic method (i.e. laser interferometry) or mechanically ruled. These polarisers do not suffer from beam displacement, are not affected by diverging or converging beam, have wide acceptance angle without degradation of performance and portable.
Features
  • Extremely broadband
  • Wide acceptance angle
  • Compact and portable
  • Polyethylene polarizers for 20-1000 microns are also available!
  • Long life time
Applications

Performance table

MaterialSpectral range (um)Transmission efficiency, % (k1) ; (k2)Degree of polarisation, % (k1-k2) / (k1+k2)Extinction ratio (k1/2k2)Contrast ratio (k1/k2)Type
KRS-52-35 microns(k1>75%; k2<0,7%)@3um ; (k1>71%; k2<0,3%)@15um98,2%@3um ; 99,2%@15um54:1@3um ; 118:1@15um108:1@3um ; 236:1@15umHolographic
CaF21-10 microns(k1>85%; k2<0,7%)@3um ; (k1>80%; k2<0,24%)@8um98,4%@3um ; 99,4%@8um61:1@3um ; 165:1@8um122:1@3um ; 330:1@8umHolographic
BaF21-13 microns(k1>85%; k2<0,58%)@3um ; (k1>85%; k2<0,23%)@10um98,6%@3um ; 99,5%@10um73:1@3um ; 185:1@10um146:1@3um ; 370:1@10umHolographic
ZnSe1-16 microns(k1>70%; k2<0,6%)@3um ; (k1>72%; k2<0,22%)@10um98,3%@3um ; 99,4%@10um58:1@3um ; 163:1@10um116:1@3um ; 326:1@10umHolographic
CaF21-9 microns(k1>70%; k2<0,7%)@3um>98%@3um>50:1@3um>100:1@3umMechanically ruled
ZnSe1,5-14 microns(k1>70%; k2<1,4%)@3um>97%@3um>25:1@3um>50:1@3umMechanically ruled
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