In contrast to BS, the way filters split light depends on the wavelength. Our spectral filters support short pulses application. Reflected or transmitted pulses remain as short as before.
By using such spectral filtering, researchers from Prof. Krausz’s group were able to build a so-called wave synthesizer. We were able to split irradiation from 250 to 1100 nm on four channels: 250-290, 290-350, 350-500, and 500-1100. The phases of reflection and transmission are controlled. This allows them to combine irradiation from four channels together, both spatially and in time, resulting in the generation of a sub-optical-cycle pulse.
- M. Hassan et al. Review of Scientific Instruments 83, 111301 (2012)
- A. Wirth et al. Science 334, 195 (2011)
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