ANNUAL REPORT - MTA SzFKI

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Grants and international cooperations OTKA T-049296 Propagation of ultrashort laser pulses in photonic crystal fibers and fiber amplifiers (R. Szipőcs, 2005-2007) OTKA T-048725 Ultrafast linear and nonlinear processes in macromolecules (R. Szipőcs, 2005-2008) NKFP1-00007/2005 National Research and Development Program – Femtobiology (Coordinator: R. Szipőcs, 2006-2008) Contract SZFKI-R&D Ultrafast Lasers Ltd contract on „Research and development of femtosecond pulse pump-probe spectroscopic system, (Coordinator: R. Szipőcs, 2006-2007) Publications Articles P.1. Várallyay * Z, Fekete J, Bányász Á, Szipőcs R; Optimizing input and output chirps up to the third order for sub-nanojoule, ultra-short pulse compression in small core area PCF; Appl Phys B; B86, 567-572, 2007 P.2. Rózsa * B, Katona * G, Vizi * ES, Várallyay * Z, Sághy * A, Valenta * L, Maák * P, Fekete J, Bányász Á, Szipőcs R; Random access 3D two-photon microscopy; Appl Optics; 46, 1860-1865, 2007 Conference proceedings P.3. Dombi P, Antal P, Szipőcs R, Várallyay * Z, Fekete J; Optimizing and pulse compression of a 200-nJ chirped pulse Ti:sapphire oscillator; In: Proc. 8th International Symposium on Laser Precision Microfabrication, Vienna, Austria, 24-28 April 2007; University of Vienna; Paper P-11, (2007) P.4. Dombi P., Antal P., Szipőcs R., Várallyay * Z, Fekete J; Chirped-pulse supercontinuum generation with a 200-nJ Ti:sapphire oscillator; In: Proc. CLEO/Europe-IQEC 2007, 17-22 June 2007, München, Germany; Paper CF-19- MON, 2007 P.5. P.6. Szipőcs R, Makai * A, Sándor * P, Hebling * J, Groma * G; Broadband and broadly tunable femtosecond pulse laser and parametric oscillators for applications in femtobiology, In: Proc. Regional Biophysics Conference, Balatonfüred, 2007 Fekete J, Várallyay * Z, Szipőcs R; Design of leaking mode photonic bandgap fibers; In: Proc. OFC/NFOEC Conference, San Diego (CA), February 24-28, 2008, accepted for publication P.7. Várallyay * Z, Fekete J, Szipőcs R; Design of higher order mode photonic bandgap fibers with reversed dispersion slope; In: Proc. OFC/NFOEC Conference, San Diego (CA), February 24-28, 2008, accepted for publication See also L.7., L.8. 72
Q. OPTICAL THIN FILMS K. Ferencz Optical thin film structures consisting of nanoscale laminated layers. — We have continued our research concerning the development of optical thin film structures containing nanooptically thin layers for advanced applications in laser physics and information technology. We have refined our new electron-beam deposition technology for the production of optical coatings containing nanooptically thin titania, silica, tantala, alumina, hafnia layers. Using needle-like optimization thin film design method, we have continued our research concerning the development of many kinds of ultrafast nanooptical coating systems – ultra-wide-band, low dispersion antireflection coatings, low dispersion beamsplitter coatings, ultrafast dichroic mirrors, wide-band output coupler mirrors, spectral shape filters for amplifiers, for example. We have found a new application of our nanooptically thin indium-tin-oxide (ITO) layers deposited with reactive e-beam method in integrated optical sensor chip technology. Our thin ITO layers having electrical resistance in the kohm range were successfully applied on the top of waveguide structures, because their optical absorbance is very low in the red part of the visible spectrum. Using our new deposition technology we have developed special type wide band ultrafast front polarizer coatings for the UV, VIS and IR ranges. We have developed new trichroic polarizer beam splitter coating working at 45 degree angle of incidence. This coating has high reflectance for the s-polarized light and high transmittance in three separated bands (blue, green, red) for the p-polarized light in the visible range. The application of our new trichroic polarizer looks very promising in the 3D display technology. Our work on interference filters is still in progress for high sensitivity detection of protein molecules elaborated by gene manipulation methods. Other developments on optical coatings. — Our work on ultrafast optical coatings is still in progress cooperating with the Max-Planck-Institute for Quantum Optics, Garching, Germany (Prof. Ferenc Krausz) for many types of advanced applications in laser oscillators, amplifiers, autocorrelators, coherent X-ray generation, etc. We have developed small-scale optical manufacturing technology for producing of large size fused silica compensating wedges having a few tenths of millimeter minimal thicknesses. We have arranged a new optical coating laboratory infrastructure financed by company Optilab Ltd. in our campus, where a new optical coating machine type INTEGRITY 36, manufactured by the US company DENTON VACUUM will start its operation in the near future. Our new coating machine manifests the state-of-the-art optical coating technology, the combination of ion-assisted deposition technology, oil-free cryopumping and a sophisticated computer control system. Based on our standard multiple-beam interference method for analysing optical coatings we have developed a new fast quantitative technique for analysing thin mineral oil films on water surfaces (project „Aquanal”). Using our CCD array spectrometer we have investigated the spreading phenomena of different kind of oil materials on water surfaces, and we have found that the equilibrium thicknesses of the oil films in many cases are much more thicker than the monolayer thicknesses are. We plane to continue our research in this field using new type oil samples to understand the details of the interaction between mineral oils and water surface. Based on our investigations we have developed optical multilayers useful as cheap sensors in oil contamination detection tasks. These results were obtained in the frame of the scientific cooperation between the Institute and the Optilab Ltd. 73
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ANNUAL REPORT 2007 RESEARCH INSTITU
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Dear Reader, It is my pleasure to h
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Key figures Permanent staff of the
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A. STRONGLY CORRELATED SYSTEMS J. S
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presented detailed study should hel
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B. COMPLEX SYSTEMS F. Iglói, R. Ju
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B.3. B.4. B.5. B.6. B.7. B.8. B.9.
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the α2 reconstruction increases on
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C.2. C.3. Kádas K, Vitos L, Johans
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C.27. Ropo * M, Kokko * K, Punkkine
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I 25 4 3 Fig. 2. Average intensity
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Page 92 and 93: EDUCATION Graduate and postgraduate
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Page 100 and 101: CONFERENCES ⎯ Electrochemistry se
Page 102: TABLE of CONTENTS PREFACE 1 KEY FIG
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