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Narrowband Filters

Narrow band filters transmit light source signals in very narrow bands and minimize interference signals.

Bandpass filter with low bandwidths

Narrow band filters transmit only a defined narrow spectral bandwidth. All other wavelengths are blocked or reflected. With our steep-edged filter designs we achieve passbands with bandwidths down to approx. 0.2 nm. We use a monitoring technique that allows us to define the central wavelength (CWL) down to 0.05 nm and at the same time provide transmittance of 98%. In the blocking range, extraneous light is suppressed up to an optical density above >10 by Design without any additional blocking elements.

Narrow-band filters are differentiated between single and multi-cavity designs. The higher the cavity, the steeper the design in combination with a flat passband.
Usually the bandwidth for this variant is defined in the range below 5 nm.

Laser Line Filters for Standard Lasers

Laser line filters also belong to this group of bandpass filters. Their designs are centered on the wavelengths of common lasers. Background plasma and secondary emissions are suppressed. This improves the signal-to-noise ratio and prevents distortion of the measurement signals.

Depending on the requirement profiles, there are also variants with limited blocking range, such as laser clean-up filters.

Harvey Washbrook
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LASER COMPONENTS Nordic - Your competent partner for optical and optoelectronic components in Sweden, Norway, Finland, Denmark, and Iceland.

Welcome to LASER COMPONENTS Nordic AB, your expert for photonics components. Each product in our wide range of detectors, laser diodes, laser modules, optics, fiber optics, and more is worth every Crown (SEK). Our customized solutions cover all conceivable areas of application: from sensor technology to medical technology. You can reach us here:

Box 14001 / Skårs led 3
SE-400 20 Göteborg

Phone: +46 (0)31 703 7173
Email: info(at)

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Harvey Washbrook
Sales Account Manager
Harvey Washbrook
Laser Components Nordic AB
41263 Göteborg - Sweden
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Laser Components

Box 14001 / Skårs led 3
SE-400 20 Göteborg

Phone: +46 (0)31 703 7173

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