Optical Gas Detection for precise measurement Optical Gas Detection for precise measurement

Recommended products

Gas Absorption Wavelengths and Compatible Products

Each gas has a unique absorption wavelength that can be used for precise optical detection. The table below shows key gases, their absorption bands, and the Hamamatsu products best suited for accurate and reliable measurement.

Absorption wavelengths of gases and compatible products

Explore our recommended products below to find the ideal components for your optical gas detection system — combining proven performance with quality and precision.

For NDIR

・Instantaneously high-peak output
・Low-heat generation
・Continuous spectrum: UV to MIR

・λp = 3.3 μm, 3.9 μm, 4.3 μm
・Suitable for measuring CO2, CH4

・Supports 5 μm band
・Equipped with a band-pass filter supporting CO2 and CH4

・high speed, high sensitivity, low noise
・spectral responses: 0.5 μm to 2.6 μm

For FTIR

・Supports 5 μm band
・Excellect linearity

・Supports 8 μm / 10 μm band
・Excellect linearity

・Supports 14 μm band
・Liquid nitrogen cooled type
・Excellent linearity

For TDLAS

・MIR semiconductor laser
・Distributed feedback structure
・Fast wavelength tuning by current modulation


・Supports 8 μm / 10 μm band
・Excellect linearity

・Supports 11 μm band
・High-speed response (DC to 100 MHz)

・Supports 5 μm / 8 μm / 11 μm band
・High-speed response (DC to 10 MHz)

・high speed, high sensitivity, low noise
・spectral responses: 0.5 μm to 2.6 μm

For DOAS

・Instantaneously high-peak output
・Low-heat generation
・Continuous spectrum: UV to MIR

・High stability
・Continuous spectrum: UV to NIR

・High stability
・Long life
・Continuous spectrum in UV range

For more information, please contact us.

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