Two-photon technology ... The first component is a stable, colourless dye precursor (DP) molecule with an absorption peak below 400 nm. The DP molecules are colourless and stable in neutral ...

Right: typical optical spectrum of HÜBNER Photonics’ VALO Femtosecond Series lasers. (Courtesy: HÜBNER Photonics) “If you decrease the pulse duration by a factor of five, this gives roughly a five ...

Soon after this, the whole ultrafast research community, which until then had been using visible-wavelength dye lasers for ... technique is based on the two-photon absorption of dyes and the ...