Dr. Bülend Ortaç

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    Principal Investigator

    Biography

    Dr. Bülend Ortaç received the B. S. degree in Physics from the Karadeniz Technical University, Trabzon, Turkey, in 1997, M. S. degree in Teaching and Diffusion of Sciences and Technology from ENS Cachan University, Paris, France, in 2000, and Ph. D. degree in Optoelectronics from Rouen University, Rouen, France, in 2004 respectively. In Mach 2005, he joined the Institute of Applied Physics, Friedrich-Schiller University, Jena, Germany, as a Post-Doctoral Associate. Since November 2009, he has been working as a research assistant professor at Institute of Materials Science and Nanotechnology, Bilkent University.

    He is the founder and principle investigator of the Laser Research Laboratory. His current research interests include the development of powerful fiber lasers in the continuous-wave regime to pulsed regime (ns, ps and fs) and the demonstration of laser systems for real world applications. He has published more than 100 research articles in major peer-reviewed scientific journals (over 50) and conferences (over 90) in the field of laser physics.

    Publications: Google Scholar 

    Education

    2004

    Rouen University, Rouen, France.
    Ph.D. in Optoelectronics, Optics and Optronics Group – CORIA UMR 6614 CNRS.

    Thesis Title: Development of femtosecond ytterbium-doped double-clad fiber laser and characterization of multiple pulsing regimes. 
    Advisor: Professor Marc Brunel. December, 2004.

    2000

    ENS Cachan University, Paris, France.
    M.S. in Teaching and Diffusion of Sciences and Technology, Laboratory Interacademic of Research on Scientific and Technological Education.

    Thesis Title: Compared descriptive study of the steps of introduction of knowledge into handbooks. 
    Advisor: Professor Anne-Marie Huynen.

    1997

    Karadeniz Technical University, Trabzon, Turkey.
    B.S. in Physics, Faculty of Science and Letters, Physics Department.

    Project work: Study of the laws of probability and analyzes data.
    Advisor: Professor Hakan Yılmaz.

    1997

    Karadeniz Technical University, Trabzon, Turkey.

    Aggregation in Physical Science, Physics Education Department.

    1993

    High School, Kabataş Erkek Lisesi Istanbul, Turkey.

    Awards & Honors

    2014The Turkish Scientific and Technical Research Council
    (TUBITAK) Award.
    2014The Young Scientist (GEBİP) Award.
    2014Distinguished Young Scientist (BAGEP) Award.
    2014METU Prof. Dr. Mustafa Parlar Foundation Research
    Incentive Award.
    2011Feyzi Akkaya Foundation (FABED) Eser Tümen Young Scientist
    Award.
    2005-
    2009    		Postdoctoral Fellowship, Institute of Applied Physics
    (Friedrich-Schiller University, Jena, Germany).
    2004Research Fellowship, CORIA UMR 6614 CNRS
    (Rouen University,
    Rouen, France) three months.
    1999-
    2004    		Graduate Scholarship, Republic of Turkey, Ministry of National
    Education
    1998-
    1999    		FKM Intensive French Course Scholarship, Republic of Turkey,
    Ministry of National Education, 14 months.
    1997Graduated with Honors from the Physics Department at
    Karadeniz Technical University.
    1996Honors student at Karadeniz Technical University.

    Professional Activities

    MembershipOptical Society of America
    Paper reviewApplied Physics B: Lasers and Optics
    IEEE Journal of Quantum Electronics
    IEEE Photonics Technology Letters
    Optics Communications
    Optics Express
    Optics Letters

    Research Interests

    Nonlinear Optics Ultrafast laser physics Fiber optic concepts CW and
    pulsed laser
    Amplification systems
    Combining of laser systems
    Laser interactions and applications
    Nanomaterials generation

    Research Experience

    2005 – 2009

    Institute of Applied Physics, Friedrich-Schiller University, Jena, Germany 

    Project work: Development of fiber-based ultrashort pulse oscillators and Chirped-pulse amplification systems based on fibers

    Pulsed fiber laser

    • Ultra-short pulse generation
    • Experimentally and numerically study of fiber laser
    • Fiber concepts (single-mode, double-clad, large-mode-area)
    • Cavity designs (linear, ring, sigma)
    • Mode-locked regimes (soliton, stretched, wave-breaking-free, dispersion compensation free, chirped pulse)
    • Saturable absorbers (Kerr-, semiconductor- and carbon nanotubes-based saturable absorbers)
    • Environmentally-stable femtosecond fiber laser
    • Ultra-short pulse fiber amplifier
    • Direct amplification of parabolic pulses in LMA fibers
    • Chirped-pulse amplification system based LMA fibers
    • Optical parametric chirped-pulse amplification

    CW fiber lasers – Combining of fiber lasers

    • Spectral beam combining of CW fiber lasers
    • Spectral beam combining of pulsed fiber lasers

    Scientific and industrial application of powerful fiber laser systems

    • Material processing
    • Ophthalmology
    • Thz generation

    2000 – 2004

    Optoelectronics, Optics and Optronics Group – CORIA UMR 6614 CNRS, Rouen University, Rouen, France

    Development of high-power femtosecond fiber oscillator

    • High-power Yb-doped double-clad femtosecond fiber lasers
    • Ultra-short high-power stretched-pulse Yb-doped double-clad fiber laser
    • Self-similar low-noise femtosecond Yb-doped double-clad fiber laser
    • Bound state generation
    • High-repetition rate femtosecond fiber laser

    Stimulated Brillouin scattering in fiber laser

    Passively Q-switched fiber laser

    Optical limiting

    1999 – 2000

    Teaching and Diffusion of Sciences and Technology, Laboratory Interacademic of Research on Scientific and Technological Education, ENS Cachan University, Paris, France

    Study of the steps of introduction of knowledge

    Locate the levels of knowledge

    Analyze the construction of knowledge into handbooks