Now showing items 1-6 of 6

    • 83 W, 1 ns, 3.1 MHz all-fiber laser for micromachining 

      Özgören, Kıvanç; Öktem, Bülent; Yılmaz, Sinem; İlday, F. Ömer; Pasin, E.; Eken, K. (IEEE, 2011)
      Fiber lasers are commonly used for various material processing applications. The advantages (such as simplicity of the system, high material removal rate) and disadvantages (larger heat-affected zone, reduced precision) ...
    • 83 W, 3.1 MHz, square-shaped, 1 ns-pulsed all-fiber-integrated laser for micromachining 

      Özgören, Kıvanç; Öktem, Bülent; Yılmaz, Sinem; İlday, F. Ömer; Eken, K. (Optical Society of America, 2011-08-29)
      We demonstrate an all-fiber-integrated laser based on off-the-shelf components producing square-shaped, 1 ns-long pulses at 1.03 mu m wavelength with 3.1 MHz repetition rate and 83 W of average power. The master-oscillator ...
    • All-fiber all-normal dispersion laser with an in-fiber Lyot filter 

      Özgören, Kıvanç; İlday, F. Ömer (Optical Society of America, 2010)
      We propose use of a short PM-fiber section as birefringent medium to construct an all-fiber Lyot filter, with bandwidth adjustable through the PM-fiber length. An all-fiber all-normaldispersion laser is demonstrated using ...
    • Filterless all-normal dispersion fiber laser 

      Özgören, Kıvanç; İlday, F. Ömer (IEEE, 2009)
      We demonstrate mode-locked operation of an allnormal dispersion Yb-fiber oscillator without the use of bulk bandpass filter. A section of PM-fiber incorporated into the cavity acts as a filter, paving the way towards an ...
    • High power all-fiber laser-amplifier systems for materials processing 

      Özgören, Kıvanç (Bilkent University, 2011)
      When the fiber lasers first appeared in 1970s, their average powers and pulse energies were so low that they remained as a laboratory curiosity for a long time. The scientific interest in fiber lasers continued due to ...
    • Micromachining with square-Shaped 1 ns-Long pulses from an all-Fiber Yb-Doped laser-Amplifier system 

      Özgören, Kıvanç; Öktem, Bülent; İlday, F. Ömer; Pasin, Ece; Eken, K. (Optical Society of America, 2011)
      We demonstrate micromachining with 1ns-long pulses from an all-fiber laser. Fiber lasers generating uncompressible long pulses have been ignored as undesired operational modes, however their robust, low-repetition-rate ...