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    Archived pages: 13 . Archive date: 2012-12.

  • Title: Ultrafast Optoelectronics and Fiber Optics
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  • Title: New Page 1
    Descriptive info: news.. research.. people.. publications.. patents.. theses.. open positions.. new!.. funding.. about us..

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  • Title: Ultrafast News
    Descriptive info: ULTRAFAST NEWS:.. 19.. 07.. 2012.. A new article is published:.. X.. Liu et al.. ,.. Monolithic highly-stable Yb-doped femtosecond fiber lasers for applications in practical biophotonics.. [invited].. ,.. J.. Sel.. Top.. Quant.. Electron.. 18.. , 1439 (2012).. 29.. 06.. All-fiber femtosecond Cherenkov radiation source ,.. Opt.. Lett.. 37,.. 2769 (2012).. 02.. A new book chapter is published:.. D.. Turchinovich and M.. C.. Hoffmann,.. Ultrafast terahertz dynamics and switching in quantum dots.. ,.. in:.. Quantum Dot Devices, Z.. M.. Wang (ed.. ), Springer, New York, (2012).. 05.. Turchinovich et al.. Self-phase modulation of a single-cycle terahertz pulse by nonlinear free-carrier response in a semiconductor ,.. Phys.. Rev.. B.. 85.. , 201304(R) (2012).. Here.. you can see a supplemental material for this paper: a.. movie.. showing the self-phase modulation of a single-cycle THz pulse, as.. it slides in time and changes its spectrum depending on its intensity.. 01.. 03.. Dmitry Turchinovich is appointed a group leader in Ultrafast dynamics and THz spectroscopy at.. Max Planck Institute for Polymer Research.. (MPIP) in Mainz, Germany.. Dmitry will retain his affiliation at DTU Fotonik, and will run the DTU and MPIP groups in parallel.. Guillermo Villanueva from Universitad Politecnica de Valencia begins his 3 month research stay in our group as a guest PhD student.. Guillermo will work on in-fiber ultrafast wave conversion techniques.. 04.. 02.. H.. Tu et al.. Cross-validation of theoretically quantified fiber continuum generation and absolute pulse measurement by MIIPS for a broadband coherently controlled optical source ,.. Appl.. 106.. , 379 (2012).. 01.. Tu, et al.. Nonlinear polarization dynamics in a weakly birefringent all-normal dispersion photonic crystal fiber : toward a practical coherent fiber supercontinuum laser ,.. Express.. 20.. , 1113 (2012).. 11.. 2011.. A 2-year post-doc position in.. Ultrafast THz dynamics and switching in semiconductor quantum dots.. is announced.. , in cooperation with.. Max Planck Institute for Polymer Research.. , Mainz, Germany.. Deadline for applications is 20th of December 2011.. 07.. 10.. Xiaomin Liu successfully defended her PhD thesis.. Construction and characterization of monolithic femtosecond fiber lasers.. Xiaomin will continue her work in our group as a  ...   (2011).. Irnis Kubat begins his special course in our group.. Irnis will be working on novel control schemes for ultrafast fiber lasers.. 24.. Our colleague Xiaomin Liu received a Chinese government prize for outstanding Ph.. D.. students studying abroad.. Laser Focus World.. features our recent work on.. highly-stable PCF-based monolithic fiber lasers.. A new patent is published.. :.. Turchinovich,.. Encoding an optical signal using a wireless radio-frequency signal.. WO/2011/015200.. 08.. 12.. 2010.. M.. Hoffmann et al,.. Terahertz electro-absorption effect enabling femtosecond all-optical switching in semiconductor quantum dots.. 97.. , 231108 (2010).. *Later featured in:.. DTU News.. THz Science Technology Network.. , and.. Terahertz Technology Blogspot.. 25.. Danish Proof of Concept Foundation (PoC) awarded a grant of DKK 0.. 75 mln to Dmitry Turchinovich for a project.. Quantum dot components for THz ultra-high-speed wireless communications (TERA-DOT).. The project period is 2011-2012.. Prof.. Kresten Yvind.. (DTU Fotonik), Dr.. Matthias C.. Hoffmann.. (Univ.. Hamburg), Dr.. Daniil Livshits (Innolume GmbH), and.. Paul Planken (TU-Delft) are collaborators on this project.. A post-doc position in this project will be filled in the Fall of 2011.. Danish Council for Independent Research - Technology and Production Sciences (FTP).. awarded a grant.. of DKK 5.. 7 mln.. to Dmitry Turchinovich and his project team: Xiaomin Liu and Jesper L.. ægsgaard,.. for a research project.. All-.. fi.. ber femtosecond near-infrared – visible - ultraviolet source for practical biophotonics (AL.. FI.. E).. The project period is 2011-2014.. Dr.. Haohua Tu and Prof.. Stephen A.. Boppart.. from.. Biophotonics Imaging Laborarory.. University of Illinois at Urbana-Champaign,.. are collaborators on this project.. Haohua Tu, University of Illinois at Urbana-Champaign, begins his 3 - months research stay at DTU Fotonik.. Tu will be working on all-fiber femtosecond laser sources.. Quantum well saturable absorber mirror with electrical control of modulation depth.. , 051103 (2010).. ,.. Highly-stable monolithic femtosecond Yb-fiber laser system based on photonic crystal fibers.. , 15475 (2010).. 15.. 04.. Hoffmann and D.. Turchinovich,.. Semiconductor saturable absorbers for ultrafast terahertz signals.. 96.. , 151110 (2010).. Self-stabilization of a mode-locked femtosecond fiber laser using a photonic bandgap fiber ,.. 35.. , 913 (2010)..

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  • Title: New Page 1
    Descriptive info: ULTRAFAST RESEARCH:.. There are two major lines of research in our program:.. -.. Modelocked femtosecond fiber lasers.. , and coherent optical sources based on them.. This research is based at DTU Fotonik, Technical University of Denmark.. Ultrafast dynamics and THz spectroscopy,.. mostly focused on solid state systems.. This research is based at Max Planck Institute for Polymer Research in Mainz, Germany.. To get a better idea of what we do, please visit our.. and.. pages and/or contact.. Dmitry Turchinovich.. or any other member of.. staff..

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  • Title: People on the project
    Descriptive info: ULTRAFAST STAFF AT DTU FOTONIK:.. - associate professor, program coordinator.. dmtu (at) fotonik.. dtu.. dk.. +45 4525 36 53.. Jesper Lægsgaard.. - associate professor, head of theory,.. jlag (at) fotonik.. +45 4525 63 50.. Xiaomin Liu.. - postdoctoral fellow,.. xali (at) fotonik.. +45 4525 38 55.. Guillermo Villanueva.. - guest Ph.. student (Universitad Politecnica de Valencia), ultrafast nonlinear wave conversion.. VISITING  ...   ALUMNI.. :.. Irnis Kubat.. - project student, ultrafast fiber lasers, 2011-2012.. DTU.. Henrik Porte.. -.. PhD project in THz semiconductor physics, 2008-2011.. Dines.. Nøddegaard Erschens -.. Master's project in THz technology, 2008-2009.. GLO ApS.. Mads Facius Lilbaek.. - Master's project in optical fiber technology, 2008-2009.. Transvision.. Jesper Toft Kristensen.. - special project in optical fiber technology, 2007-2008.. Cornell University.. Andreas Houmann..

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  • Title: PUBLICATIONS
    Descriptive info: PUBLICATIONS.. Journal papers.. The journal papers in pdf may be downloaded for personal use only.. Most papers are also featured in.. Virtual Journal of Ultrafast Science.. Liu, J.. Lægsgaard, U.. Møller, H.. Tu, S.. Boppart, and D.. Turchinovich.. All-fiber femtosecond Cherenkov radiation source.. 37.. , 2769 (2012).. Turchinovich, J.. Hvam, and M.. Hoffmann.. Self-phase modulation of a single-cycle terahertz pulse by nonlinear free-carrier response in a semiconductor.. Lægsgaard, and D.. Turchinovich.. Tu, Y.. Lægsgaard, D.. Turchinovich, M.. Siegel, D.. Kopf, H.. Li, T.. Gunaratne, and S.. Boppart.. Cross-validation of theoretically quantified fiber continuum generation and absolute pulse measurement.. by MIIPS for a broadband coherently controlled optical source,.. , 379 (2012).. Liu, X.. Liu, D.. Lægsgaard, and S.. Nonlinear polarization dynamics in a weakly birefringent all-normal dispersion photonic crystal fiber:.. toward a practical coherent fiber supercontinuum laser.. , 1113 (2012).. Erschens, D.. Turchinovich, and P.. U.. Jepsen.. Optimized optical rectification and electro-optic sampling in ZnTe crystals with chirped femtosecond laser pulse,.. van Capel, D.. Turchinovich, H.. Porte, S.. Lahmann, U.. Rossow, A.. Hangleiter, and J.. I.. Dijkhuis.. Correlated terahertz acoustic and electromagnetic emission in dynamically screened InGaN/GaN quantum wells.. Turchinovich, and S.. Compression of fiber supercontinuum pulses to the Fourier-limit in a high-numerical-aperture focus.. Porte, D.. Turchinovich, S.. Persheyev, Y.. Fan, M.. Rose, and P.. Effect of copper on the carrier lifetime in black Silicon.. Hoffmann, B.. Monozon, D.. Livshits, E.. Rafailov, and D.. Terahertz electro-absorption effect enabling femtosecond all-optical switching in semiconductor quantum dots.. Liu, E.. Rafailov, D.. Livshits, and D.. Quantum well saturable absorber mirror with electrical control of modulation depth.. Highly-stable monolithic femtosecond Yb-fiber laser system based on photonic crystal fibers.. - featured in.. C.. Semiconductor saturable absorbers for ultrafast terahertz signals.. Self-stabilization of a mode-locked femtosecond fiber laser using a photonic bandgap fiber.. Porte, P.. Uhd Jepsen, N.. Daghestani, E.. Ultrafast release and capture of carriers in InGaAs/GaAs quantum dots observed by time-resolved terahertz spectroscopy.. 94.. , 262104 (2009).. Turchinovich, X.. Liu, and J.. Lægsgaard.. Monolithic all-PM femtosecond Yb-fiber laser stabilized with a narrow-band fiber.. Bragg grating and pulse-compressed in a hollow-core photonic crystal fiber.. 16.. , 14004 (2008).. Encyclopedia of Laser Physics and Technology.. T.. Kristensen, A.. Houmann, X.. Liu, and D.. Low-loss polarization-maintaining fusion splicing of single-mode fibers and hollow-core.. photonic crystal fibers, relevant for monolithic fiber laser pulse compression.. , 9986 (2008).. L.. Scolari, C.. B.. Olausson, J.. Weirich, D.. Turchinovich, T.. Alkeskjold, A.. Bjarklev, and L.. Eskildsen.. A tunable polarization maintaining filter based on a liquid crystal photonic bandgap fibre.. 44.. , 1189 (2008).. Turchinovich and J.. Performance of combined 100 - 110 ZnTe crystals in an amplified THz time-domain spectrometer.. Commun.. 270.. , 96 (2007).. Turchinovich and P.. Uhd Jepsen.. Nonlinear excitation kinetics of biased quantum wells.. Coherent dynamical screening effect.. phys.. stat.. sol.. (c).. 3.. , 2494 (2006).. Turchinovich, B.. Monozon, and P.. Role of dynamical screening in excitation kinetics of biased quantum wells:.. Nonlinear absorption and ultrabroadband terahertz emission.. 99.. , 013510 (2006).. Turchinovich, P.. Uhd Jepsen, B.. Monozon, M.. Koch, S.. Rossow, and A.. Hangleiter.. Ultrafast polarization dynamics in biased quantum wells under strong femtosecond optical excitation.. 68.. , 241307(R) (2003).. Turchinovich, K.. Pierz, and P.. Uhd Jepsen.. InAs/GaAs quantum dots as efficient free carrier deep traps.. 0.. , 1556 (2003).. Turchinovich, A.. Kammoun, P.. Knobloch, T.. Dobbertin, and M.. Koch.. Flexible all-plastic mirrors for the THz range.. A.. 74.. , 291 (2002).. W.. Ossau, V.. Kochereshko, D.. R.. Yakovlev, R.. Suris, D.. Turchinovich, G.. Landwehr, T.. Wojtowicz, G.. Karczewski, and J.. Kossut.. Exciton-electron interactions in modulation-doped QW structures.. Low-Dim.. Struct.. 1/2.. , 205 (1998).. Turchinovich, V.. Yakovlev, W.. Ossau, G.. Landwehr, T.. Wojtowicz, G.. Karczewski, and J.. Kossut.. Trions in quantum-well structures with two-dimensional electron gas.. Solid State.. 40.. , 747 (1998).. Book chapters.. Turchinovich and M.. Hoffmann.. Ultrafast terahertz dynamics and switching in quantum dots.. Ultrafast THz saturable absorption in doped semiconductors at room temperature.. Ultrafast Phenomena XVII.. , Oxford University Press (2011).. K.. Iwaszczuk, H.. Porte, R.. K.. Olsson, D.. Cooke, D.. Turchinovich, and P.. Terahertz sources and  ...   MD (2011).. QMB3 in: Proceedings of Conference on Lasers and Electrooptics 2011 (CLEO 2011), Baltimore, MD (2011).. International Workshop on Optical Terahertz Science and Technology (OTST 2011), Santa Barbara, CA (2011).. Ultrafast THz saturable absorption in semiconductors.. Effect of copper on carrier dynamics in black silicon.. Semiconductor saturable absorbers for ultrafast THz signals.. paper ME20 in: Proceedings of 17th International Conference on Ultrafast Phenomena (UP), Snowmass Village, CO (2010).. Porte, P.. Turchinovich, and J.. I.. Dijkhuis.. High-amplitude THz and GHz strain waves, generated by ultrafast screening of piezoelectric field in InGaN/GaN multiple quantum wells.. paper QThC1 in: Proceedings of CLEO/QELS 2010, San Jose, CA (2010).. Liu, E.. Rafailov, D.. Livshits, and D.. paper CThI2 in: Proceedings of CLEO/QELS 2010, San Jose, CA (2010).. van Capel, H.. Turchinovich, and J.. High-amplitude strain- and THz emission by InGaN/GaN quantum wells via piezoelectric screening.. Phonons 2010, Taipei, Taiwan (2010).. Turchinovich, X.. Liu, and J.. Lægsgaard.. SPIE Photonics West 2010, San Franscisco, CA (2010).. Ultrafast conductivity dynamics in optically excited InGaN/GaN multiple quantum wells, observed by transient THz spectroscopy.. Liu, J.. Lægsgaard, and D.. Monolithic all-PM femtosecond Yb-doped fiber laser using photonic bandgap fibers.. paper TuEE3 in: Proceeding of 22nd Annual Meeting of IEEE Photonics Society, Antalya, Turkey (2009).. Observation of trapping and release of carriers in InGaAs/GaAs quantum dots by ultrafast THz spectroscopy.. paper ThD1 in: Proceeding of 22nd Annual Meeting of IEEE Photonics Society, Antalya, Turkey (2009).. Turchinovich, D.. G.. Cooke, and P.. Transient photoconductivity in InGaN/GaN multiple quantum wells, measured by time-resolved terahertz Spectroscopy.. paper ThD2 in: Proceeding of 22nd Annual Meeting of IEEE Photonics Society, Antalya, Turkey (2009).. Cooke, P.. Terahertz studies of ultrafast carrier dynamics in inGaN/GaN multiple quantumwells.. 16th International Conference on Electron Dynamics in Semiconductors, Optoelectronics and Nanostructures (EDISON 16) Montpellier, France (2009).. Uhd Jepsen, N.. Rafailov, and D.. All-PM monolithic fs Yb-fiber laser, dispersion-managed with all-solid photonic bandgap fiber.. paper CMA4 in: Proceedings of CLEO/IQEC 2009, Baltimore, MD (2009).. Photonics for Terahertz Communication Technology.. Workshop on present and future applications of analogue photonics, OFC/NFOEC 2009, San Diego, CA (2009).. Monolithic stabilized Yb-fiber all-PM laser directly delivering nJ-level femtosecond pulses.. IEEE LEOS 21st Annual Meeting, Newport Beach, CA (2008).. Monolithic Yb-fiber femtosecond laser using photonic crystal fiber.. EOS Annual Meeting 2008, Paris (2008).. Scolari, C.. B.. T.. Olausson, D.. Turchinovich, T.. Alkeskjold, A.. Bjarklev, and L.. Eskildsen.. A polarization maintaining filter based on a liquid-crystal-photonic-bandgap-fiber.. European Conference on Optical Communications (ECOC 2008), Brussels (2008).. Monolithic Femtosecond Yb-fiber Lasers with Photonic Crystal Fibers.. International Conference on Advanced Laser Technologies (ALT’08), Siofok, Hungary (2008).. Monolithic ytterbium all-single-mode fiber laser with direct fiber-end delivery of nJ-level femtosecond pulses.. paper JThA34 in: Proceedings of CLEO/QELS 2008, San Jose, CA (2008).. Olsson, V.. Uhd Jepsen, and D.. Monolithic femtosecond fiber laser operating at 1064 nm.. International Conference on Advanced Laser Technologies (ALT’07), Levi, Lappland (2007).. Uhd Jepsen, T.. Leick, and D.. Femtosecond fiber lasers for THz applications.. Royal Netherlands Academy of Sciences colloquium on Terahertz Science, Amsterdam (2007).. Turchinovich and P.. 8th International Conference on Nonlinear Optics and Excitation Kinetics in Semiconductors (NOEKS 8), Münster (2006).. Ultrafast polarization dynamics in optically excied biased quantum wells.. [invited].. Photonics West, San Jose, CA (2004).. Uhd Jepsen, and K.. Pierz.. 7th International Conference on Nonlinear Optics and Excitation Kinetics in Semiconductors (NOEKS 7), Karlsruhe (2003).. Uhd Jepsen.. Ultrafast charge dynamics in confined environments.. Photonics 2002, 16 - 18 December 2002, Mumbai, India (2002).. Turchinovich, M.. Walther, H.. Helm, M.. Lahmann, U.. Rossow, A.. Generation of broadband THz pulses in optcally excited GaN/InGaN multiple quantum well structures.. International Conference on Semiconductor Nanostructures and Nanodevices (ICSNN-2002), Toulouse (2002).. Knobloch, G.. Koch.. SPIE’s 46th Annual Meeting, Intl.. Symposium on Optical Science and Technology, San Diego, CA (2001).. Dobbertin, D.. Knobloch, and M.. Polymeric dielectric mirrors for sub-mm wavelength range.. 8th Intl.. on Terahertz Electronics, Darmstadt (2000).. Turchinovich, V.. Kochereshko, H.. Mariette, R.. Cox, and Y.. Merle d'Aubigne.. Cladding layer effect on the reflectance and transmission spectra in the CdTe/CdZnTe MQWs.. 7th Intl.. Symposium “Nanostructures: Physics and Technology”, St.. Petersburg (1999)..

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  • Title: PATENTS
    Descriptive info: PATENTS.. Patent WO2011/015200.. Dobbertin, P.. Knobloch, D.. Turchinovich, and M.. Patent EP 1299886 A2.. US Patent 6,954,309 B2.. Optisches Bauelement / Optical Component (Plastic dielectric mirrors for THz frequency range)..

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  • Title: New Page 1
    Descriptive info: PhD THESES.. Study of ultrafast polarization and carrier dynamics in semiconductor nanostructures:.. A THz spectroscopy approach.. Ph.. thesis.. , University of Freiburg (2004).. , Technical University of Denmark (2011).. MSc THESES.. Exciton reflectance spectroscopy of CdTe-based quantum well structures.. Sc.. thesis, St.. Petersburg State Electrotechnical University and Ioffe Institute (1999).. Mads Facius Lilbæk.. Pressure chamber for control of nonlinear propagation in hollow-core photonic bandgap fibres.. thesis, Technical University of Denmark (2009).. Dines Nøddegaard Erschens.. THz generation by chirped pulse optical rectification.. thesis, Technical University of Denmark (2009)..

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  • Title: New Page 1
    Descriptive info: POSITIONS IN ULTRAFAST:.. Special, bachelor, and master projects.. At all times we offer the projects in:.. Ultrafast semiconductor optoelectronics.. (both experiment and theory).. Ultrafast fiber lasers and in-fiber frequency conversion.. (mostly experiment).. All student projects are aimed at.. at least one journal publication.. as a result, so the expected level of student research in our group is rather high.. PhD.. or.. post-doc positions.. 2-year post-doc position in Ultrafast THz dynamics and switching in semiconductor quantum dots.. in a collaborative project between DTU Fotonik and MPI-P in Mainz, Germany.. Please submit the application via e-mail to.. before 20th of December 2011..

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  • Title: New Page 1
    Descriptive info: FUNDING:.. Project title.. Acronym.. Principal investigator.. Granting agency.. Granted amount.. Project period.. ber femtosecond near-infrared – visible - ultraviolet source for practical biophotonics.. DKK 5.. 7 mln.. 2011 - 2014.. Quantum dot components for THz ultra-high-speed wireless communications.. TERA-DOT.. Danish Proof of Concept Foundation (PoC).. DKK 0.. 75 mln.. 2011 - 2012..

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  • Title: New Page 1
    Descriptive info: The.. Ultrafast Optoelectronics and Fiber Optics.. research program comprises the projects supervised by Dmitry Turchinovich.. This program is based at.. DTU Fotonik.. (ultrafast fiber lasers and related research), and at.. Max Planck Institute for Polymer Research,.. Mainz, Germany (ultrafast dynamics and THz spectroscopy of solid state systems).. Contact:.. ___________________________________________.. DTU.. Fotonik -.. Department of Photonics Engineering.. Technical University of Denmark.. Ørsteds.. Plads.. 343, DK-2800.. Kgs.. Lyngby.. Denmark.. Phone: +45 4525 3653.. ;.. Fax: +45 4593 6581.. E-mail:.. or.. Ackermannweg 10, D-55128 Mainz, Germany.. Phone: +49 6131 379 522; Fax: +49 6131 379 360.. E-mail:.. turchino (at) mpip-mainz.. mpg.. de..

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  • Archived pages: 13