B�lend Orta�

Bülend ORTAÇ

Assistant Professor

Bilkent University, UNAM-Institute of Materials Science and Nanotechnology

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 Mars 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

2014

Distinguished Young Scientist (BAGEP) Award.

2011

Feyzi Akkaya Foundation (FABED) Eser Tümen Young Scientist Award.

2005-2009

Postdoctoral Fellowship, Institute of Applied Physics (Friedrich-Schiller University, Jena, Germany).

2004

Research 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.

1997

Graduated with Honors from the Physics Department at Karadeniz Technical University.

1996

Honors student at Karadeniz Technical University.

 

Professional Activities

Membership

Optical Society of America

Peer review

Applied 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

Optical limiting

 

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 lasers

♦ 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