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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.

Björn Götze
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Björn Götze
Sales Account Manager / Optical Filters
Björn Götze
LASER COMPONENTS Germany GmbH
82140 Olching
Elvyne Egrot
Sales Manager
Elvyne Egrot
LASER COMPONENTS S.A.S.
92190 Meudon
Harvey Washbrook
Sales Account Manager
Harvey Washbrook
Laser Components Nordic AB
41263 Göteborg - Sweden
Samuel Thienel
Technical Sales Engineer
Samuel Thienel
LASER COMPONENTS (UK) Ltd.
CM2 7PR Chelmsford Essex
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