Now showing items 1-20 of 12940

    • 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 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 ...
    • 1.06μm-1.35μm coherent pulse generation by a synchronously- pumped phosphosilicate raman fiber laser 

      Elahi P.; Makey G.; Turnali A.; Tokel O.; Ilday F.Ö. (OSA - The Optical Society, 2017)
      [No abstract available]
    • 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 LaAlO 3 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. (2001)
      Step edge junction (SEJ) rf-SQUID magnetometers and gradiometers were fabricated using PLD Y-Ba-Cu-O films on LaAlO 3(100) and SrTiO 3(100) substrates. Effects of different step structure and the film properties on the ...
    • 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, ...
    • 10-W, 156-MHz all-fiber-integrated Er-Yb-doped fiber laser-amplifier system 

      Pavlov I.; Ilbey, E.; Dülgergil, E.; Ömer Ilday F. (2012)
      We demonstrate all-fiber, high-power chirped-pulse-amplifier system, operating at 1550 nm. 156-MHz soliton oscillator seeds a two-stage single-mode amplifier with output power of 10 W. After external compression, pulse ...
    • 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. (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 ...
    • 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 ...
    • 11th international conference MMET*2006 

      Altintas, A. (2007)
      The 11th International Conference on Mathematical Methods in Electromagnetic Theory (MMET*06) was organized and sponsored by the IEEE AP-S East Ukraine Joint Chapter at the Kharkiv National University, Kharkiv, Ukraine, ...
    • 128-bit microprocessor compatible programmable correlator chip for use in synchronous communication 

      Ungan I.Enis, Topcu Satilmis, Atalar Abdullah (Publ by IEEE, Piscataway, NJ, United States, 1989)
      A single-chip microprocessor-compatible 128-b correlator is designed and implemented in a 3-μm M2CMOS process. Full-custom design techniques are applied to achieve the best tradeoff among chip size, speed, and power ...
    • 130 nJ 77 fs dissipative soliton fiber laser 

      Baumgartl, M.; Ortaç, B.; Lecaplain, C.; Hideur, A.; Limpert J.; Tünnermann, A. (2010)
      We report on ultrashort high-energy pulse generation from an all-normal-dispersion fiber oscillator. The watt-level laser directly emits chirped pulses with a duration of lps and 163nJ of pulse energy. These can be compressed ...
    • 130 nJ 77 fs dissipative soliton fiber laser 

      Baumgartl, M.; Ortaç, B.; Lecaplain, C.; Hideur, A.; Limpert J.; Tünnermann, A. (2010)
      We report on ultrashort high-energy pulse generation from an all-normal-dispersion fiber oscillator. The watt-level laser directly emits chirped pulses with a duration of 1ps and 163nJ of pulse energy. These can be compressed ...
    • 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 ...
    • 2-D adaptive prediction based Gaussianity tests in microcalcification detection 

      Nafi Gürcan, M.; Yardimci, Y.; Enis Çetin, A. (1998)
      With increasing use of Picture Archiving and Communication Systems (PACS), Computer-aided Diagnosis (CAD) methods will be more widely utilized. In this paper, we develop a CAD method for the detection of microcalcification ...