Laser Bandpass Filter

Bandpass filters dichroic beamsplitters edge and notch filters raman spectroscopy filters mirrors and fluorescence filters sets.

Laser bandpass filter.

Thorlabs selection of dielectric coated spectral filters are presented here. 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. Bandpass filters with extremely narrow passbands.

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 line filters are centered on the wavelengths of standard lasers and suppress underground plasma and secondary emissions in order to prevent the distortion of measurement signals. Our bandpass filters feature a dielectric stack fabry pérot interferometer design. 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. 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 laser line bandpass filter is placed in the optical path between the laser and the sample. It is important to pay attention to the tolerance.

Our premium bandpass filters are hard coated for higher transmission and are more durable and longer lasting than our standard bandpass filters. Laser line bandpass filters are ideal for transmitting laser light while suppressing ambient light as well as lower intensity secondary laser lines. 2 2 nm maximum this part is not available for custom sizing. Narrow bandwidth 1 3 nm and excellent blocking from 300 to 1200 nm.

The highly reflective side of the filter should generally face the source minimizing the thermal load on the blocking. 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. The center wavelength shifts linearly with temperature less than 0 02 nm c. The highly reflective side of the filter should generally face the source minimizing the thermal load on the blocking glass and epoxies.

Each specification refers. 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. This ensures that any external ambient light is blocked and only the laser line wavelength is passed. Each filter is mounted in a black anodized alumi.