Bülend Ortaç, PhD

Mustafa Özgür GülerPh. D. Physics, Rouen University, 2004
M.S. Teaching and Diffusion of Sciences and Technology, ENS Cachan University, 2000
B. S. Physics, Karadeniz Technical University, 1997

Mailing Address:
UNAM-Institute of Materials Science and Nanotechnology
Bilkent University
Bilkent, Ankara 06800 
E-mail: ortac@unam.bilkent.edu.tr
Phone: +90-312-290 3526
Fax: +90-312-266 4365

Research Interests:

Fiber optic concepts, CW and pulsed laser, amplification systems, nonlinear optics, ultrafast laser physics, combining of fiber lasers, THz generation, application of laser systems and optical limiting

Current Research:

Our research activities are concentrated in the area of laser technology. We design and develop powerful wide-range fiber-based laser systems. We focus on the development of newly design and original pulsed and CW laser sources delivering unprecedented performance in term of the compactness, low noise, energy and power levels as versatile tools for scientific and industrial applications. We also perform theoretical investigations on our laser systems for better understand and control of the systems parameters. The ongoing research activities include investigations of laser interaction with various solid and biological.

Representative Publications:

  • C. Lecaplain, B. Ortaç, G. Machinet, J. Boullet, M. Baumgartl, J. Limpert, T. Schreiber, E. Cormier, A. Hideur, “High-energy femtosecond photonic crystal fiber laser,” Optics Letters, vol. 35, pp. 3156–3158, 2010.
  • B. Ortaç, J. Limpert, S. Jetschke, S. Unger, V. Reichel, J. Kirchhof, A. Tünnermann, “High-energy picosecond pulse generation with a passively mode-locked Er-Yb doped multifilament-core fiber laser,” Applied Physics B, vol. 98, pp. 27–31, 2010.
  • B. Ortaç, M. Baumgartl, J. Limpert, A. Tünnermann, “Approaching microjoule-level pulse energy with mode-locked femtosecond fiber lasers,” Optics Letters, vol. 34, pp. 1585–1587, 2009.
  • G. Matthaeus, B. Ortaç, J. Limpert, S. Nolte, R. Hohmuth, M. Voitsch, W. Richter, B. Pradarutti, A. Tünnermann, “Intracavity terahertz generation inside a high-energy ultrafast soliton fiber laser,” Applied Physics Letters, vol. 93, 261105, 2008.
  • S. Klingebiel, F. Röser, B. Ortaç, J. Limpert, A. Tünnermann, “Spectral beam combining of Yb-doped fiber lasers,” JOSA B, vol.24, pp. 1716–1720, 2007.
  • T. Schreiber, C. K. Nielsen, B. Ortaç, J. Limpert, A. Tünnermann, “µJ level all polarization-maintaining femtosecond fiber source,” Optics Letters, vol. 31, pp. 574–576, 2006.
  • F. Röser, J. Rothhard, B. Ortaç, A. Liem, O. Schmidt, T. Schreiber, J. Limpert, A. Tünnermann, “131 W 220 fs fiber laser system,” Optics Letters, vol. 30, pp. 2754–2756, 2005.
  • B. Ortaç, A. Hideur, M. Brunel, “Passive harmonic mode locking in a high-power Yb-doped double-clad fiber laser,” Optics Letters, vol. 29, pp. 1995–1997, 2004.
  • B. Ortaç, A. Hideur, T. Chartier, M. Brunel, Ph. Grelu, H. Leblond, F. Sanchez, “Generation of bound states of three ultra-short pulses with a passively mode-locked high-power Yb-doped double-clad fiber laser,” IEEE Photonics Technology Letters, vol. 16, pp. 1274–1276, 2004.
  • B. Ortaç, A. Hideur, T. Chartier, M. Brunel, C. Özkul, F. Sanchez, “90 fs stretched-pulse Ytterbium-doped double-clad fiber laser,” Optics Letters, vol. 28, pp. 1305–1307, 2003.