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Wavelength References manufactures gas cells as frequency standards for near-infrared and mid-infrared applications such as calibration, measurement, and gas sensing. Components from Wavelength References are installed in thousands of products worldwide. Reference gas cells rely on the principles of molecular absorption, particularly the vibrational and rotational modes of molecular gases such as acetylene, hydrogen cyanide, carbon monoxide, and hydrogen fluoride. Molecular absorption frequency standards have a clear advantage in being relatively insensitive to environmental changes and temporal variations, allowing for traceability due to the fundamental physics of molecular absorption. 【Features】 ■ Corresponds to the wavelength range of mid-infrared light ■ Offers free-space gas cells with various windows *Hydrogen Fluoride Reference Cell: The hydrogen fluoride reference cell uses a sapphire window sealed under compression in a copper housing. The cell has an optical path length of 2.7 cm and can have a clear aperture of 5 mm or 10 mm. Please contact us for more details. *For more information, please refer to the PDF document or feel free to contact us.
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We offer various windowed free-space gas cells corresponding to the wavelength range of mid-infrared light. When inquiring, please select the tube diameter, cell path length, and window material. Please note that copper cells are used for the hydrogen fluoride cell. 【Product Introduction】 ■ Glass Tube: Soda-lime glass cut to path lengths of 1cm to 40cm is used. Available diameters are 5, 9, 12, and 25mm. ■ Window: You can choose from AR-coated B270 glass, MgF2, or ZnSe. To minimize interference effects, the windows have a wedge and are fixed to the tube with a slight tilt. ■ Gas: Common reference gases include ammonia (NH3), acetylene (C2H2), hydrogen cyanide (HCN), and methane (CH4). These can be provided at concentrations in mixtures and nitrogen backfill (up to a pressure of 740 Torr). We cannot provide atomic vapor. *For more details, please refer to the PDF document or feel free to contact us.
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【Examples of Gas Cell Usage】 ■ Wavelength Calibration Tool ■ Optical Spectrum Analyzer ■ Tunable Laser ■ Medical Devices ■ Calibration Light Source for Optical Equipment *For more details, please refer to the PDF document or feel free to contact us.
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