Address: Bilkent University-UNAM, Üniversiteler District, 06800 Çankaya/Ankara, Turkey
Professional Webpage of Dr. Ali Karatutlu
Physicist, Engineer, Nanotechnologist and Always Curious about the New Materials
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Fabrication of biaxial polarization-maintaining optical fiber with ultra-low bending-dependent polarization extinction ratio deterioration Fundamentals of Laser-generated Nanoparticles in Liquid-phase A Systematic Study on Au-capped Si Nanowhiskers for Size-Dependent Improved Biosensing Applications Atomic layer deposition of zirconium oxide thin film on an optical fiber for cladding light strippers Combined method for the fabrication of high-power cladding light stripper using buffered oxide etchant

Fabrication of biaxial polarization-maintaining optical fiber with ultra-low bending-dependent polarization extinction ratio deterioration

A new PM fiber design was proposed and fabricated with high-birefringence.

Fundamentals of Laser-generated Nanoparticles in Liquid-phase

Chapter 11 in 21st Century Nanoscience – A Handbook Low-Dimensional Materials and Morphologies (Volume Four) Published August 10, 2020 by CRC Press  

A Systematic Study on Au-capped Si Nanowhiskers for Size-Dependent Improved Biosensing Applications

Plasmonics accepts our recent work on Au-capped Si NWs for the size dependent fluorescence enhancent of the flurophores.

Atomic layer deposition of zirconium oxide thin film on an optical fiber for cladding light strippers

The first cladding light stripper device prepared by Atomic Layer Deposition System is reported!

Combined method for the fabrication of high-power cladding light stripper using buffered oxide etchant

Published in Applied Optics  

Love doing world-class research

Research on fundamental properties and applications of the preform and fiber production, fiber lasers, laser processing and nanotechnology is conducted in our group.

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Combined method for the fabrication of high-power cladding light stripper using buffered oxide etchant

Publications at high-impact journals

Original research papers and book chapters are available in high-impact journals and well-recognized publishers.

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Combined method for the fabrication of high-power cladding light stripper using buffered oxide etchant

Latest technology driven applications

The materials including active & passive fibers fabricated by our group catches the level of industrial products and can be utilized in several applications.

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Combined method for the fabrication of high-power cladding light stripper using buffered oxide etchant

Delivering talks in the conferences & meetings

Our group delivers talks for the sake of serving to the scientific community by widening the knowledge produced recently.

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Combined method for the fabrication of high-power cladding light stripper using buffered oxide etchant
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Research Highlights

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  • Free-standing nanoparticles / Nanotechnology

    Free-standing nanoparticles / Nanotechnology

    Functionalized nanoparticles can be prepared using a room temperature benchtop colloidal route in mass scale and still be cost-effective.

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    Free-standing nanoparticles / Nanotechnology

  • New class of liquid matallic phase / Nanotechnology (at extreme env.)

    New class of liquid matallic phase / Nanotechnology (at extreme env.)

    A transition to a liquid-like metallic structure under hydrostatic compression was discovered in Ge nanoparticles .

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    New class of liquid matallic phase / Nanotechnology (at extreme env.)

  • New types of nanocomposites / Nanotechnology

    New types of nanocomposites / Nanotechnology

    Bean-like deposition of nanoparticles inside iron-filled carbon nanotubes has been recently demonstrated.

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    New types of nanocomposites / Nanotechnology

  • The explosive crystallization / Laser & material interaction

    The explosive crystallization / Laser & material interaction

    Free-standing nanoparticles were found promising in bioimaging and they also carry potential in therapy using the explosive crystallization phenomenon.

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    The explosive crystallization / Laser & material interaction

  • Super-resolution/BioNanotechnology

    Super-resolution/BioNanotechnology

    Spectroscopic super-resolution fluorescence cell imaging using ultra-small Ge quantum dots,

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    Super-resolution/BioNanotechnology

News

The first national active fiber in Turkey recognized at kW-level

The first active fiber in Turkey developed by Ortac Group was recognized by THE SCIENTIFIC AND TECHNOLOGICAL RESEARCH COUNCIL OF TURKEY and has passed all the tests including optical, mechanical...

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Optical Fiber Preform and Fiber Fabrication

Ortac Group has demonstrated  the fabrication of new generation of optical fibers including photonic crystal fibers (PCFs) and high-power low NA active all-fibers.

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Working experience and degrees

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