• Publications
  • Influence
Terahertz conductivity of thin gold films at the metal-insulator percolation transition
Terahertz time-domain spectroscopy is used to measure the complex conductivity of nanometer-thick gold films evaporated on silicon substrates in the far-infrared spectral region fromExpand
  • 285
  • 5
  • PDF
Generation of 1.5 microJ single-cycle terahertz pulses by optical rectification from a large aperture ZnTe crystal.
We demonstrate the generation muJ-level, single-cycle terahertz pulses by optical rectification from a large-aperture ZnTe single crystal wafer. Energies up to 1.5 muJ per pulse and a spectral rangeExpand
  • 241
  • 5
  • PDF
Terahertz pulse induced intervalley scattering in photoexcited GaAs.
Nonlinear transient absorption bleaching of intense few-cycle terahertz (THz) pulses is observed in photoexcited GaAs using opticalpump--THz-probe techniques. A simple model of the electron transportExpand
  • 78
  • 4
Polyynes as a model for carbyne: synthesis, physical properties, and nonlinear optical response.
With the Fritsch-Buttenberg-Wiechell rearrangement as a primary synthetic route, a series of conjugated, triisopropylsilyl end-capped polyynes containing 2-10 acetylene units has been assembled. In aExpand
  • 253
  • 3
  • PDF
Size vs surface: tuning the photoluminescence of freestanding silicon nanocrystals across the visible spectrum via surface groups.
The syntheses of colloidal silicon nanocrystals (Si-NCs) with dimensions in the 3-4 nm size regime as well as effective methodologies for their functionalization with alkyl, amine, phosphine, andExpand
  • 190
  • 3
The surprising nonlinear optical properties of conjugated polyyne oligomers.
Polyynes represent a unique class of conjugated organic compounds. The third-order nonlinear optical response of polyynes has been extensively modeled theoretically, and it is generally believed thatExpand
  • 117
  • 2
  • PDF
Effective mass anisotropy of hot electrons in nonparabolic conduction bands of n-doped InGaAs films using ultrafast terahertz pump-probe techniques.
The anisotropic effective mass of energetic electrons in an isotropic, nonparabolic conduction band is revealed using ultrafast THz-pump-THz-probe techniques in a n-doped InGaAs semiconductor thinExpand
  • 44
  • 2
Synthesis, structure, and nonlinear optical properties of diarylpolyynes.
A series of alpha,omega-diarylpolyynes has been synthesized. In addition to the synthesis of three hexaynes (3a-c), a notably improved synthesis of 1,16-diphenylhexadecaoctayne (5) is described. TheExpand
  • 77
  • 1
  • PDF
Ultrafast photoresponse in microbridges and pulse propagation in transmission lines made from high-T/sub c/ superconducting Y-Ba-Cu-O thin films
We report our femtosecond time-resolved measurements of the photoresponse of microbridges in YBa/sub 2/Cu/sub 3/O/sub 7-x/ (YBCO) thin films, performed using an electrooptic sampling technique. OurExpand
  • 56
  • 1
  • PDF