Now showing items 1-8 of 8

    • Generation of parabolic bound pulses from a Yb-fiber laser 

      Ortaç, B.; Hideur, A.; Brunel, M.; Chédot, C.; Limpert J.; Tünnermann, A.; Ilday F.Ö. (Optical Society of American (OSA), 2006)
      We report the observation of self-similar propagation of bound-state pulses in an ytterbium-doped double-clad fiber laser. A bound state of two positively chirped parabolic pulses with 5.4 ps duration separated by 14.9 ps ...
    • High-speed InGaAs based resonant cavity enhanced p-i-n photodiodes 

      Kimukin I.; Biyikli, N.; Ozbay, E. (2001)
      High-speed InGaAs based resonant cavity enhanced photodiodes were discussed. The responses of the photodiodes was measured under high incident optical powers. Bandwidth-efficiency (BWE) product was used to measure the ...
    • High-speed transparent indium-tin-oxide based resonant cavity Schottky photodiode with Si/sub 3/N/sub 4//SiO/sub 2/ top Bragg mirror 

      Biyikli, N.; Kimukin, I.; Aytur, O.; Ozbay, E.; Gokkavas, M.; Unlu, S. (IEEE, Piscataway, NJ, United States, 2000)
      Photodetectors demonstrating high bandwidth-efficiency (BWE) products are required for high-performance optical communication and measurement systems. For conventional photodiodes the BWE product is limited due to the ...
    • Innovative laser sources operating around 2 μm 

      Kracht D.; Sayinc H.; Yilmaz S.; Wysmolek M.; Hausmann K.; Ottenhues C.; Wandt D.; Wienke A.; Neumann J. (Elsevier B.V., 2016)
      We report on a variety of continuous wave and pulsed laser sources based on Thulium- and Holmium-doped materials, emitting in the spectral range around 2 μm. This includes continuous wave Thulium-doped fiber lasers which ...
    • 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, A.; Serpenguzel, A.; Aydinli, A.; Roberts J. S. (SPIE - The International Society for Optical Engineering, 1998-01)
      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 ...
    • Phase-matched self-doubling optical parametric oscillator 

      Kartaloğlu, T.; Köprülü, K. G.; Aytür, O. (IEEE, Piscataway, NJ, United States, 1996)
      A new self-doubling optical parametric oscillator (OPO) uses a single nonlinear crystal for both parametric generation and frequency doubling. It is based on a KTiOPO4 (KTP) crystal pumped by a Ti:Sapphire laser operating ...
    • Raman studies of doped polycrystalline silicon from laser-annealed, doped a-Si:H 

      Compaan, A.; Savage, M. E.; Aydinli, A.; Azfar, T. (Pergamon Press, 1994)
      We have used Raman scattering to follow the progress of multiple-pulse (sub-melt-threshold) laser annealing in doped hydrogenated amorphous silicon films (a-Si:H) on glass. In phosphorous-doped a-Si:H the Raman signal shows ...
    • Terahertz time-domain study of silver nanoparticles synthesized by laser ablation in organic liquid 

      Koral, C.; Ortaç, B.; Altan, H. (IEEE Microwave Theory and Techniques Society, 2016-07)
      We report the investigation of laser-synthesized Ag nanoparticles (Ag-NPs) in an organic liquid environment by using terahertz time-domain spectroscopy (THz-TDS) technique. Colloidal Ag-NPs with an average diameter of 10 ...