Now showing items 1-6 of 6

    • Fabry-Perot-type resonances in metallic photonic crystals 

      Serpengüzel, Ali; Savran, Kerim (IEEE, 1998)
      A metallic photonic crystals (MPC) with a face-centered cubic (FCC) Bravais lattice is investigated in the microwave regime. It was found that the transmission below and above the stop band is unity, which is quite remarkable ...
    • Microcavity effects in the photoluminescence of hydrogenated amorphous silicon nitride 

      Serpengüzel, Ali; Aydınlı, Atilla; Bek, Alpan (SPIE, 1998)
      Fabry-Perot microcavities are used for the alteration of photoluminescence in hydrogenated amorphous silicon nitride grown with and without ammonia. The photoluminescence is red-near-infrared for the samples grown without ...
    • Microcavity enhanced amorphous silicon photoluminescence 

      Serpengüzel, Ali; Aydınlı, Atilla; Bek, Alpan (IEEE, 1997)
      A microcavity enhancement of room temperature photoluminescence (PL) of a hydrogenated amorphous silicon (a-Si:h) was performed. A quantum confinement model was developed to describe the occurrence of the PL in the bulk ...
    • The operation of a novel hot electron vertical cavity surface emitting laser 

      Balkan, N.; O'Brien-Davies, A.; Thoms, A. B.; Potter, R. J.; Poolton, N.; Adams, M. J.; Masum, J.; Bek, Alpan; Serpengüzel, Ali; Aydınlı, Atilla; Roberts, J. S. (SPIE, 1998)
      The hot Electron Light Emission and Lasing in Semiconductor Heterostructures devices (HELLISH-1) is novel surface emitter consisting of a GaAs quantum well, within the depletion region, on the n side of Ga 1-xAlxAs p- n ...
    • Optical spectroscopy of microcavities 

      Serpengüzel, Ali; Arnold, S.; Lock, J. A.; Griffel, G. (Springer, 1997)
      Microcavities, such as microspheres, possess morphology-dependent resonances (MDR’s). In this chapter light coupling mechanisms to MDR’s is examined. The novel mechanism of excitation of the microsphere with an optical ...
    • Semiconductor and dielectric microcavity spectroscopy 

      Serpengüzel, Ali (TÜBİTAK, 1999)
      Semiconductor and dielectric microcavities are used for the localization of photons as well as the enhancement of photon density of states. The enhancement of photoluminescence, electroluminescence, and lasing by the use ...