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We demonstrate experimentally the advantages of driving laser-assisted photoemission from surfaces with long-wavelength-IR light. We show that applications in probing surface dynamics benefit from using longer-wavelengths since many side effects of strong fields are suppressed.
We present the first observation of the laser-assisted photoelectric effect in surface photoemission. Illuminating a Pt(111) sample simultaneously with 1.6 eV and 42 eV pulses, we observe ldquodressingrdquo of the EUV photoelectron spectrum.
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