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Journals and Conferences
We demonstrate a setup based entirely on compact Er:fiber technology which synthesizes pulses of a duration of 4.3 fs. This value corresponds to a single cycle of light in the telecom wavelength region.
Individual nanometer-sized plasmonic antennas are excited resonantly with few-cycle laser pulses in the near infrared. Intense third-harmonic emission of visible light prevails for fundamental photon energies below 1.1 eV. Interband luminescence and second harmonic generation occur solely at higher driving frequencies. We attribute these findings to… (More)
We studied the compressibility of silver (10 nm) and gold (30 nm) nanoparticles, n-Ag and n-Au, suspended in a methanol-ethanol mixture by x-ray diffraction (XRD) with synchrotron radiation at pressures up to 30 GPa. Unexpectedly for that size, the nanoparticles show a significantly higher stiffness than the corresponding bulk materials. The bulk modulus of… (More)
We demonstrate a compact pulse compression scheme that offers flexible chirp control for improved conversion efficiencies in high resolution nonlinear optical microscopy. An Er:fiber laser combined with a highly nonlinear optical fiber yields pulses centered at 1100 nm with a bandwidth of 500 nm. The compressed pulses with a duration of 7.6 fs enable… (More)
A widely tunable picosecond Er:fiber laser system enables fast and turn-key CARS microscopy. The tuning range gives access to vibrational resonances between 1150 cm<sup>-1</sup> and 3800 cm<sup>-1</sup> with high spectral resolution of 10 cm<sup>-1</sup>.