long-life spectral filters
best-in-class transmittance due to decreased oxidation
superior flatness and roughness
higher mechanical stiffness
long-term stability through improved heat dissipation
segmented foils for collinear pump/probe experiments
HP spectroscopy offers metal filters for spectral filtering in our spectrometers and beamlines. The XUV filters have a significantly higher transmission than conventional filters. Thin coating layers avoid XUV-absorbing oxidation on both surfaces. In addition, their higher mechanical stiffness makes their handling in the lab easier.
For collinear pump/probe experiments with a split mirror, segmented filter foils are available. The dedicated support structure for the foil segment enables higher heat dissipation, a crucial component for high-intensity laser setups. Our segmented foils provide long-term stability for months.
Selected filter transmission
Selecting the right XUV filter allows for focusing on the spectral region of interest. Unwanted stray light from the laser wavelength or low-order harmonics is blocked.
HP spectroscopy provides a variety of filters, both in full plane and segmented configuration. Contact us to discuss your application.
Measured and calculated transmission of 100nm-thick HP Al filter (black) and conventional Al filter (blue).
Transmission is higher by a factor of 2 to 10 due to the reduced oxidation.
Measured 3D surface images of
(a) an HP XUV filter and
(b) a conventional lift-off filter