1. Igor Krestnikov

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    1. Mentioned In 4 Articles

    2. Self-assembled quantum dot based swept laser source for optical coherence tomography applications

      Self-assembled quantum dot based swept laser source for optical coherence tomography applications

      In this work the use of two identical QD SOAs to enhance the performance of swept laser system for OCT applications is discussed, resulting in an increase in bandwidth up to 94nm. The combination of GaAs based QD SOAs and InP based QW SOAs for realizing broad bandwidth sources for OCT system is described. For the swept laser source a 154nm spectral bandwidth from 1193nm to 1347nm and an average power of 8mW is obtained and for the filtered ASE source a 225 nm bandwidth is demonstrated

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    3. Feature Of The Week 7/3/11: Swept-Source Laser Based on a Quantum Dot Semiconductor Optical Amplifier

      Feature Of The Week 7/3/11: Swept-Source Laser Based on a Quantum Dot Semiconductor Optical Amplifier
      Researchers at the University of Sheffield have been very active in publishing novel results on high performance semiconductors for Optical Coherence Tomography. Recently in collaboration with Innolume they published on a swept-source laser based on a quantum-dot semiconductor optical amplifier. Below is a summary of that work.Swept source lasers (SSL) are a crucial component in Fourier domain optical coherence tomography (OCT) systems. Most SSLs use semiconductor optical amplifiers (SOA) as the gain medium. By cleverly manipulating cavity configurations, SSLs have achieved amazing speeds up to MHz sweep frequencies. Most SOAs used are quantum well (QW) designs. Here we present ...
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    4. Evaluation of a swept-laser optical coherence tomography light source based on a novel quantum-dot based semiconductor optical amplifier

      Evaluation of a swept-laser optical coherence tomography light source based on a novel quantum-dot based semiconductor optical amplifier
      ...l-dermal junction visualized. Nik Krstajic, David Childs, Negin Peyvast, Deepa Kasaragod, Stephen J. Matcher, Igor Krestnikov and Richard Hogg, "Evaluation of a swept-laser optical coherence tomography light source based...
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    5. Swept-Source Laser Based on Quantum-Dot Semiconductor Optical Amplifier—Applications in Optical Coherence Tomography

      Swept-Source Laser Based on Quantum-Dot Semiconductor Optical Amplifier—Applications in Optical Coherence Tomography
      We present a swept-source laser based on a quantum-dot semiconductor optical amplifier (QD SOA) (designed and manufactured by Innolume Gmbh, Germany) as the gain medium. The properties of the laser are as follows: center wavelength is 1220 nm, sweep range is 94 nm (up to 120 nm in manual mode), the peak laser power is 16 mW, and the sweep speed is 100 Hz. We apply the laser in an optical coherence tomography (OCT) configuration and present images of in vivo skin. QD SOA are well suited to OCT and we show the setup can be improved for power, sweep ...
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  2. About Igor Krestnikov

    Igor Krestnikov is with Innolume GmbH in Dortmund Germany.