Now showing items 1-20 of 10024

    • 1 mJ pulse bursts from a Yb-doped fiber amplifier 

      Kalaycioglu H.; Eldeniz, Y.B.; Akçaalan O.; Yavas, S.; Gürel, K.; Efe, M.; Ilday F.O. (2012)
      We demonstrate burst-mode operation of a polarization-maintaining Yb-doped fiber amplifier capable of generating 60 μJ pulses within bursts of 11 pulses with extremely uniform energy distribution facilitated by a novel ...
    • 1 mJ pulse bursts from a Yb-doped fiber amplifier 

      Kalaycioglu, H.; Eldeniz, Y. B.; Akcaalan, O.; Yavas, S.; Gurel, K.; Efe, M.; Ilday, F. O. (OSA Publishing, 2012-07-01)
      We demonstrate burst-mode operation of a polarization-maintaining Yb-doped fiber amplifier capable of generating 60 mu J pulses within bursts of 11 pulses with extremely uniform energy distribution facilitated by a novel ...
    • 1.3 μm GaAs based resonant cavity enhanced Schottky barrier internal photoemission photodetector 

      Biyikli Necmi, Kimukin Ibrahim, Ozbay Ekmel, Tuttle Gary (IEEE, Piscataway, NJ, United States, 2000)
      GaAs based photodetectors operating at 1.3 μm that depend on internal photoemission as the absorption mechanism were fabricated. Quantum efficiency (QE) was increased using resonant cavity enhancement (RCE) effect.
    • 1/f Noise characteristics of SEJ Y-Ba-Cu-O Rf-SQUIDs on LaAlO3 substrate and the step structure, film, and temperature dependence 

      Fardmanesh, M.; Schubert, J.; Akram, R.; Bick, M.; Zhang, Y.; Banzet, M.; Zander, W.; Krause, H. J.; Burkhart, H.; Schilling, M. (IEEE, 2001-03)
      Step edge junction (SEJ) rf-SQUID magnetometers and gradiometers were fabricated using PLD Y-Ea-Cu-0 films on LaA10,(100) and SrTi0,(100) substrates. Effects of different step structure and the film properties on the yield, ...
    • 100 GHz resonant cavity enhanced Schottky photodiodes 

      Onat, B.; Gokkavas, M.; Ozbay, E.; Ata, E. P.; Towe, E.; Unlu, M. S. (IEEE, 1998-05)
      Resonant cavity enhanced (RCE) photodiodes are promising candidates for applications in optical communications and interconnects where ultrafast high-efficiency detection is desirable. We have designed and fabricated RCE ...
    • 100-GHz resonant cavity enhanced Schottky photodiodes 

      Onat, B.M.; Gökkavas, M.; Özbay, E.; Ata, E.P.; Towe, E.; Ünlü, M.S. (1998)
      Resonant cavity enhanced (RCE) photodiodes are promising candidates for applications in optical communications and interconnects where ultrafast high-efficiency detection is desirable. We have designed and fabricated RCE ...
    • 100-GHz resonant cavity enhanced Schottky photodiodes 

      Onat, B.M.; Gökkavas, M.; Özbay, E.; Ata, E.P.; Towe, E.; Ünlü, M.S. (1998)
      Resonant cavity enhanced (RCE) photodiodes are promising candidates for applications in optical communications and interconnects where ultrafast high-efficiency detection is desirable. We have designed and fabricated RCE ...
    • 1018 nm Yb-doped high-power fiber laser pumped by broadband pump sources around 915 nm with output power above 100 W 

      Midilli Y.; Efunbajo O.B.; Şimşek B.; Ortaç B. (OSA - The Optical Society, 2017)
      We demonstrate a 1018 nm ytterbium-doped all-fiber laser pumped by tunable pump sources operating in the broad absorption spectrum around 915 nm. In the experiment, two different pump diodes were tested to pump over a wide ...
    • 15-Lipoxygenase-1 re-expression in colorectal cancer alters endothelial cell features through enhanced expression of TSP-1 and ICAM-1 

      Tunçer S.; Keşküş A.G.; Çolakoğlu M.; Çimen I.; Yener C.; Konu Ö.; Banerjee S. (Elsevier Inc., 2017)
      15-lipoxygenase-1 (15-LOX-1) oxygenates linoleic acid to 13(S)-hydroxyoctadecadienoic acid (HODE). The enzyme is widely suppressed in different cancers and its re-expression has tumor suppressive effects. 15-LOX-1 has been ...
    • 175 fs-long pulses from a high-power single-mode Er-doped fiber laser at 1550 nm 

      Elahi P.; Kalaycıoğlu H.; Li H.; Akçaalan Ö.; Ilday F.Ö. (Elsevier B.V., 2017)
      Development of Er-doped ultrafast lasers have lagged behind the corresponding developments in Yb- and Tm-doped lasers, in particular, fiber lasers. Various applications benefit from operation at a central wavelength of 1.5 ...
    • 2 + 1 KdV(N) equations 

      Gürses, M.; Pekcan, A. (2011)
      We present some nonlinear partial differential equations in 2 + 1-dimensions derived from the KdV equation and its symmetries. We show that all these equations have the same 3-soliton solution structures. The only difference ...
    • 2+1 KdV(N) equations 

      Gurses, M.; Pekcan, A. (American Institute of Physics, 2011)
      We present some nonlinear partial differential equations in 2 + 1-dimensions derived from the KdV equation and its symmetries. We show that all these equations have the same 3-soliton solution structures. The only ...
    • A 2-D orientation-adaptive prediction filter in lifting structures for image coding 

      Gerek Ö.N.; Çetin, A.E. (2006)
      Lifting-style implementations of wavelets are widely used in image coders. A two-dimensional (2-D) edge adaptive lifting structure, which is similar to Daubechies 5/3 wavelet, is presented. The 2-D prediction filter predicts ...
    • A 2-D orientation-adaptive prediction filter in lifting structures for image coding 

      Gerek, O. N.; Cetin, A. E. (IEEE, 2006-01)
      Lifting-style implementations of wavelets are widely used in image coders. A two-dimensional (2-D) edge adaptive lifting structure, which is similar to Daubechies 5/3 wavelet, is presented. The 2-D prediction filter predicts ...
    • 2-Killing vector fields on warped product manifolds 

      Shenawy, S.; Ünal, B. (World Scientific Publishing Co. Pte Ltd, 2015)
      This paper provides a study of 2-Killing vector fields on warped product manifolds as well as characterization of this structure on standard static and generalized Robertson-Walker space-times. Some conditions for a 2-Killing ...
    • 2012 William Allan Award introduction: Uta Francke 

      Ozcelik, T. (Elsevier, 2013-03-07)
    • 2012 William Allan Award introduction: Uta Francke. 

      Ozçelik, T. (2013)
      [No abstract available]
    • 2D vibrational properties of epitaxial silicene on Ag(111) 

      Solonenko D.; Gordan O.D.; Lay G.L.; Sahin H.; Cahangirov S.; Zahn D.R.T.; Vogt P. (IOP Publishing Ltd, 2017)
      The two-dimensional silicon allotrope, silicene, could spur the development of new and original concepts in Si-based nanotechnology. Up to now silicene can only be epitaxially synthesized on a supporting substrate such as ...
    • 3-country trade relations: A discrete dynamic game approach 

      Ozyildirim, S. (Elsevier, 1996-09)
      A three-country, two-bloc trade model is used to determine the impact of a coalition within the blocs on the optimal pricing policies of the bloc. It is shown in a North-South world where the South has to cooperate for ...
    • 3-D Motion Estimation and Wireframe Adaptation Including Photometric Effects for Model-Based Coding of Facial Image Sequences 

      Bozdagi, G.; Tekalp, A. M.; Onural, L. (IEEE, 1994-06)
      We propose a novel formulation where 3-D global and local motion estimation and the adaptation of a generic wireframe model to a particular speaker are considered simultaneously within an optical flow based framework ...