Journal of Lasers, Optics & Photonics

Vlahovic B

Publications

• Research Article
  Inter-Relation between Laser Induced Photoconductance and Millimeter Wave Absorption Using C-Si Intrinsic Resistivity
  Author(s): Roy B, Tsui A, Oni O and Vlahovic BRoy B, Tsui A, Oni O and Vlahovic B
  
  In a contactless photo conductance measurement system the radio-frequency (RF) probe transmission (ΔV/ V0) should be proportional to the product of laser-induced carrier concentration and carrier mobility (�?�?�?�Σμ) through a sensitivity factor (A). We use 532 nm laser (pump)-millimeter wave (mmw-probe) system whose concentrations (�?�?�?�) are calculated by considering single-surface reflection of the laser beam and mobility (Σμ) derived from a model. In order to ascertain A we use five c-Si (100) samples having resistivity in the range 15-130 Ω-cm. For relating (ΔV/V0) with �?�?�?�Σμ to find A, we take their ratio and quantify A once using a quadratic-fit functional form of the ratio of sample resistivity to air resistivity (ρ/ρ0), and another time using product of free-space impedance and sample thickness (ρ/Z0t). A is.. Read More»
  DOI: 10.4172/2469-410X.1000175

  Abstract PDF