Laser Bandpass Filter

Tunable bandpass optical filters for spectroscopy come in many possible configurations including diffraction gratings acousto optic liquid crystal volume bragg gratings tilted multilayer filter coated plates and flat bandpass filters with bandpass center wavelength linearly varying across the filter many of these require complex and costly extra optics.

Laser bandpass filter.

Our laser line bandpass filters cover most of the common laser lines and feature excellent out of band blocking of less than 0 01 10 4. This ensures that any external ambient light is blocked and only the laser line wavelength is passed. The last two which rely on. The center wavelength shifts linearly with temperature less than 0 02 nm c.

2 2 nm maximum this part is not available for custom sizing. The customer is free to choose the central wavelength in bandpass filters as well as the cut on and cut off wavelength in broadband bandpass filters. Different standard full width half maximum values in bandpass filters e g 1 1 2 4 3 8 or 11 are specified. To achieve the best results use filters with bandwidths as narrow as 1 2nm and optical densities of od 6 0.

Our bandpass filters feature a dielectric stack fabry pérot interferometer design. Each specification refers. Each filter is mounted in a black anodized alumi. Bandpass and laser line filters are available in the visible near ir and infrared ranges.

Transmission and optical density curves for individual filters are available by clicking on the blue info icon for each individual filter below. Narrow bandwidth 1 3 nm and excellent blocking from 300 to 1200 nm. It is important to pay attention to the tolerance. Home spectroscopic filters bandpass filters laser line laser line iridian s laser line filters are amongst the best in the world featuring high transmittance greater than 90 in the pass band.

Laser line bandpass filters are ideal for transmitting laser light while suppressing ambient light as well as lower intensity secondary laser lines. 248 6 nm maxline laser clean up filter laser wavelength 248 6 nm t abs 40 248 6 nm fwhm of 1 7 nm typical. The highly reflective side of the filter should generally face the source minimizing the thermal load on the blocking. The bandpass and laser line filters shown on this page feature center wavelengths of 700 nm to 1650 nm.

Thorlabs selection of dielectric coated spectral filters are presented here. Our premium bandpass filters are hard coated for higher transmission and are more durable and longer lasting than our standard bandpass filters. Bandpass filters with extremely narrow passbands. The laser line bandpass filter is placed in the optical path between the laser and the sample.