IR Polarizer

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Infrared Polarizer Selection Chart
Compare and Contrast Polarizer Parameters
Parameters	BVO NIR diode	BVO IR	wire grid type	BVO 22
Effective Bandwidth	500-1100nm	700-2000nm	500-2000nm	430-800nm
Thickness	.127 mm	.410 mm	.700 mm	.290 mm
Imaging Applications	no	yes	yes	yes
Substrate	polymer	iodine dichroic	glass	iodine dichroic
Polarizer Type	reflective/trans	trans	reflective/trans	trans
Cost	$	$$	$$	$
Native Size	275 mm2	50 mm2	100 mm OD	500 mm2
Wavefront Distortion	High	Low	Low	Low
Easily Cleaned	Very Easy	Easy	No	Easy
Damage Threshold	NA	1 Watt/cm2 CW	50 KW/cm2 CW	1 Watt/cm2 CW

	Useful for • Laser Diode Polarization • LED Polarization • NIR Detectors/Sensors • NIR Solid state variable attenuation • Problematic 800-1000nm range	Applied to Laser rangefinding systems Glare elimination in machine vision Medical instrumentation Fiber Bragg Gratings Large area requirements
		BVO NIR diode polarizing film is a low cost alternative to traditionally expensive infrared polarizers. The large form factor allows for large surface areas to be polarized efficiently. The 127 micron thickness makes this polarizer flexible and fits well into miniaturized systems.  click for BVO NIR diode polarizer large chart  (input light is unpolarized, 0° angle of incidence)
	Useful for • Optical Isolation / Circular Polarization • Broadband IR Polarizer • Semiconductor Lasers, Nd:YAG • Liquid Crystal Variable Attenuators / Rotators	Applied to Semiconductor inspection Astronomy Telecommunications IR spectroscopy IR imaging & IR research
		BVO IR polarizer is our best contrast performing infrared polarizer. A broadband infrared polarizer useful for imaging, optical isolation and all general purpose IR applications. This material is proven to work exceptionally with liquid crystal devices as polarization rotators or variable attenuators.  click for BVO IR polarizer large chart  (input light is unpolarized, 0° angle of incidence)
	Useful for • Optical Isolation / Circular Polarization • NIR-VIS 400-800nm • Liquid Crystal Variable Attenuators / Rotators	Applied to NIR imaging NIR research
		BVO Vis22 polarizer is useful in the NIR for the 700-800nm bandwidth. This polarizer is recommended for use in the NIR shoulder region where center wavelengths for many diode lasers reside. The polarizer can be glass mounted for improved transmitted wavefront error in imaging applications.  click for BVO Vis22 polarizer large chart  (input light is unpolarized, 0° angle of incidence)
	Useful for • Broadband IR Polarizer • High Damage Threshold	Applied to IR polarizing beamsplitter IR imaging systems
	Wire grid polarizer works well in the NIR and IR bandwidths. This polarizer is especially useful in applications where high damage thresholds or reflective polarization states are required.

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