Figure 4
From: Phase control of femtosecond pulses on the nanoscale using second harmonic nanoparticles
Top: SH control on a Fe(IO3)3 NP (a), on a Au dimer (b) and on a single Au NP (c). For each NP, the SH spectra were collected for compressed (black) and uncompressed pulses (green) and for a step function of amplitude π (red) applied to the SLM. These results are shown together with the corresponding simulated SH spectra (dashed lines). For the single Au NP, the wavelength range was increased up to 480 nm to include the TPPL emission. Bottom: spectral phase measured for one (d) Fe(IO3)3 NP (red line) and (e) Au dimer (red line) and Au monomer (blue line) when applying a compensation mask obtained for a BaTiO3 NP. The error bars are the standard deviations obtained from repeated measurements of BaTiO3 NPs. MIIPS, multiphoton intrapulse interference phase scan; NP, nanoparticle; SH, second harmonic; SLM, spatial light modulator; TPPL, two-photon photoluminescence.
