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• --HER Infrared Polarizer-- 57002 – KRS-5 unmounted 57011 – KRS-5 25 mm CA mounted 57013 – KRS-5 38 mm CA mounted 57015 – KRS-5 71 mm CA mounted 57004 – Ge unmounted 57071 – Ge 28 mm CA mounted 57073 – Ge 38 mm CA mounted 57075 – Ge 50 mm CA mounted 57077 – Ge 71 mm CA mounted 57007 – CaF2 unmounted 57081 – CaF2 25 mm CA mounted 57083 – CaF2 38 mm CA mounted 57085 – CaF2 50 mm CA mounted 57087 – CaF2 71 mm CA mounted 57009 – BaF2 unmounted 57091 – BaF2 25 mm CA mounted 57093 – CaF2 38 mm CA mounted 57095 – CaF2 50 mm CA mounted 57097 – CaF2 71 mm CA mounted 57017 – ZnSe unmounted 57051 – ZnSe 25 mm CA mounted 57053 – ZnSe 38 mm CA mounted 57055 – ZnSe 50 mm CA mounted 57057 – ZnSe 71 mm CA mounted

 

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High Extinction Ratio Infrared Polarizers

GS57000 Series Wire Grid Polarizer

Specac GS57000 series high extinction ratio infrared polarizers are a range of high-quality holographic wire grid polarizers fabricated on a variety of infrared-transmitting substrates, and available in sizes from 25 mm to 71 mm diameter clear aperture. These infrared polarizers are fabricated with an enhanced coating process to ensure a higher degree of polarization extinction ratio over standard GS57000 series infrared polarizers, without jeopardising transmission throughput.

 

Fabricated with a grid periodicity of 4000 lines/mm, these polarizer offer outstanding extinction coefficient and transmission throughput characteristics with enhanced performance at short wavelengths for precision applications. Infrared substrate materials include as standard: calcium fluoride (CaF₂), barium fluoride (BaF₂), zinc selenide (ZnSe), germanium (Ge), and thallium bromoiodiode (KRS-5).

 

These polarizers are compatible with Specac's GS57300 series of Bench Mount Polarizer rotators.  In addition, 38 mm clear aperture GS57000 series Infrared Polarizers may be mounted in Specac's GS12510 Benchmark™ FTIR Polarizer Rotator for in-compartment polarization experimentation with Specac Benchmark™ baseplate mounted accessories such as: Golden Gate™ ATR, Silver Gate™ Evolution ATR, and Gateway™ Horizontal ATR systems, and the Cyclone™ and Tornado™ long pathlength gas cells.

 

Features and benefits

• High extinction ratio
• 5000 cm-1 to 285 cm-1 operating range
• CaF₂, BaF₂, ZnSe, Ge, and KRS-5 substrates
• Polarizer clear apertures from 25 mm to 71 mm
• Wide acceptance angle for non-collimated beam

 

Ordering Information

HER KRS-5 substrate polarizers

57002 - Unmounted (25mm O.D.)

57011 - Mounted (41mm O.D., 25mm C.A., 6.7mm thk)

57013 - Mounted (55mm O.D., 38mm C.A., 8.7mm thk)

57015 - Mounted (70mm O.D., 50mm C.A., 8.7mm thk)

 

HER Ge substrate polarizers

57004 - Unmounted (25mm O.D.)

57071 - Mounted (41mm O.D., 25mm C.A., 6.7mm thk)

57073 - Mounted (55mm O.D., 38mm C.A., 8.7mm thk)

57075 - Mounted (70mm O.D., 50mm C.A., 8.7mm thk)

57077 - Mounted (90mm O.D., 71mm C.A., 9.7mm thk)

 

HER CaF₂ substrate polarizers

57007 - Unmounted (25mm O.D.)

57081 - Mounted (41mm O.D., 25mm C.A., 6.7mm thk)

57083 - Mounted (55mm O.D., 38mm C.A., 8.7mm thk)

57085 - Mounted (70mm O.D., 50mm C.A., 8.7mm thk)

57087 - Mounted (90mm O.D., 71mm C.A., 9.7mm thk)

 

HER BaF₂ substrate polarizers

57009 - Unmounted (25mm O.D.)

57091 - Mounted (41mm O.D., 25mm C.A., 6.7mm thk)

57093 - Mounted (55mm O.D., 38mm C.A., 8.7mm thk)

57095 - Mounted (70mm O.D., 50mm C.A., 8.7mm thk)

57097 - Mounted (90mm O.D., 71mm C.A., 9.7mm thk)

 

HER ZnSe substrate polarizers

57017 - Unmounted (25mm O.D.)

57051 - Mounted (41mm O.D., 25mm C.A., 6.7mm thk)

57053 - Mounted (55mm O.D., 38mm C.A., 8.7mm thk)

57055 - Mounted (70mm O.D., 50mm C.A., 8.7mm thk)

57057 - Mounted (90mm O.D., 71mm C.A., 9.7mm thk)