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Narrowband Infrared Filters

  • High transmission rate within the transmission bandwidth
  • Wavelength selections covering the whole IR wavelength range of 0.9μm - 12μm
  • Various substrate materials including silicon, sapphire, IR-grade fused silica, germanium, etc.
  • Applications: Gas Detection, Semiconductor
  • Inquire us for customization  
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Modules or Types:

Here are some available models of the Narrowband IR Filters optimized for gas detection

Code CWL HPBW Tpeak(%) Blocking(Tavg<1%) Detected Gas
40702-001 2.00μm±20nm 44±10nm ≧80% 400-3200nm CO2
40702-002
 2.18μm±20nm
 41±10nm ≧80% 400-3200nm HF ref
40702-003 2.45μm±25nm
 72±10nm ≧75% 400-20000nm HF means
40702-004 2.89μm±20nm
 54±10nm ≧75% 400-20000nm H2O
40702-005 3.55μm±30nm
 132±20nm ≧75% 400-20000nm HCl
40702-006 4.72μm±50nm
 90±10nm ≧75% 400-11000nm CO
40702-007 5.25μm±50nm
 100±10nm ≧75% 400-11000nm NO
40702-008 5.46μm±50nm
 102±10nm ≧75% 400-11000nm SO2 ref
40702-009 6.25μm±100nm
 124±10nm ≧75% 400-11000nm NO2
40702-010 7.40μm±100nm
 126±10nm ≧80% 400-10000nm SO2
40702-011 10.6μm±200nm
 1172±150nm ≧75% 400-12000nm NH3
Note: Custom IR filters are also available upon request.

Narrowband Infrared Filters, or Narrow Band Pass IR Filters of Shalom EO, are oriented for transmitting a specific and narrow section of the IR spectrum centered around the designed center wavelength while blocking the remaining lights. Compared with broadband infrared filters, which are also available in Shalom EO, the transmission bandwidths of narrowband infrared filters are more limited. The substrate materials of Shalom EO's Narrowband Infrared (IR) Filters are selected from a diverse range including Si, sapphire, IR grade fused silica (such as Corning7979/SK-1310), Ge, and more, allowing for customized options to suit specific projects, enhancing compatibilities with various environments and applications. Selectable transmission bandwidths cover the entire IR wavelength spectrum from 0.9μm to 12μm. These filters feature high transmission within their designated bandwidths, enabling reliable and accurate manipulation of infrared signals, and meeting the demands of advanced technological applications like gas detection and semiconductor.