Mr. Petr Koranda Profile

Petr Koranda

PhD Student in Solid-State Lasers Lab at Czech Technical Univ in Prague

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Author

Publications (36)

Proceedings Article | 4 March 2011 Paper

Fe:ZnSe laser - comparison of active materials grown by two different methods

Maxim Doroshenko, Helena Jelínková, Tasoltan Basiev, Michal Jelínek, Petr Koranda, Michal Němec, Vitaliy Komar, Andriy Gerasimenko, Valerii Badikov, Dmitri Badikov, David Vyhlídal, Jan Stoklasa

Proceedings Volume 7912, 79122D (2011) https://doi.org/10.1117/12.876082

KEYWORDS: Crystals, Laser crystals, Er:YAG lasers, Luminescence, Mirrors, Ions, Absorption, Resonators, Output couplers, Reflectivity

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Proceedings Article | 18 February 2011 Paper

Influence of Tm:YAP laser irradiation on tensile strength for bracket debonding

Tatjana Dostalova, Helena Jelinkova, Jan Sulc, Petr Koranda, Michal Nemec, Martin Fibrich, Michal Jelinek, Pavel Michalik, Mitsunobu Miyagi

Proceedings Volume 7884, 788404 (2011) https://doi.org/10.1117/12.873745

KEYWORDS: Ceramics, Laser dentistry, Adhesives, Teeth, Laser irradiation, Stereolithography, Laser bonding, Semiconductor lasers, Metals, Thulium

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Proceedings Article | 19 May 2010 Paper

Room-temperature lasing, gain-switched bulk, tunable Fe:ZnSe laser

Helena Jelínková, Petr Koranda, Maxim Doroshenko, Jan Šulc, Michal Jelínek, Miroslav Cech, Tasoltan Basiev, Valerii Badikov, Dmitri Badikov

Proceedings Volume 7721, 772111 (2010) https://doi.org/10.1117/12.854304

KEYWORDS: Crystals, Er:YAG lasers, Mirrors, Laser crystals, Reflectivity, Q switched lasers, Ions, Resonators, Absorption, Output couplers

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Proceedings Article | 6 March 2010 Paper

Laser brackets debonding: Tm:YAP and Clarity SL self-ligating appliance system

Tatjana Dostálová, Helena Jelínková, Jan Šulc, Petr Koranda, Michal Němec, Michal Jelínek, Martin Fibrich, Pavel Michalik, Mitsunobu Miyagi

Proceedings Volume 7549, 754908 (2010) https://doi.org/10.1117/12.840115

KEYWORDS: Laser dentistry, Teeth, Ceramics, Adhesives, Semiconductor lasers, Stereolithography, Etching, Scanning electron microscopy, Americium, Laser applications

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Proceedings Article | 3 March 2010 Paper

Cr:ZnSe laser pumped with Tm:YAP microchip laser

Petr Koranda, Jan Sulc, Maxim Doroshenko, Helena Jelinková, Tasoltan Basiev, Vjatcheslav Osiko, V. Badikov, D. Badikov

Proceedings Volume 7578, 757826 (2010) https://doi.org/10.1117/12.839680

KEYWORDS: Crystals, Laser crystals, Resonators, Output couplers, Mirrors, Dielectrics, Reflectivity, Laser systems engineering, Laser resonators, Optical pumping

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Proceedings Article | 24 February 2010 Paper

Hollow waveguide for urology treatment

H. Jelínková, M. Němec, P. Koranda, J. Pokorný, O. Kőhler, P. Drlík, M. Miyagi, K. Iwai, Y. Matsuura

Proceedings Volume 7559, 755907 (2010) https://doi.org/10.1117/12.840916

KEYWORDS: Er:YAG lasers, Waveguides, Laser tissue interaction, Pulsed laser operation, Hollow waveguides, Laser systems engineering, Tissues, Laser therapeutics, Glasses, Mid-IR

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Proceedings Article | 28 February 2009 Paper

Bulk Fe:ZnSe laser gain-switched by the Q-switched Er:YAG laser

Maxim Doroshenko, Tasoltan Basiev, Petr Koranda, Helena Jelínková, Michal Němec, Miroslav Čech, Jan Šulc, Vitaly Komar, Andriy Gerasimenko, Valerii Badikov, Dmitri Badikov

Proceedings Volume 7193, 71931K (2009) https://doi.org/10.1117/12.810257

KEYWORDS: Er:YAG lasers, Crystals, Laser crystals, Mirrors, Q switched lasers, Laser applications, Energy efficiency, Laser energy, Resonators, Mid-IR

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Proceedings Article | 24 February 2009 Paper

Laser brackets debonding: Tm:YAP, Nd:YAG, and GaAs diode lasers evaluation

Tat'jana Dostálová, Helena Jelínková, Jan Šulc, Petr Koranda, Michal Němec, Ilja Ivanov, Mitsunobu Miyagi, Katsumasa Iwai

Proceedings Volume 7162, 71620C (2009) https://doi.org/10.1117/12.808137

KEYWORDS: Laser dentistry, Semiconductor lasers, Teeth, Ceramics, Diodes, Nd:YAG lasers, Adhesives, Gallium arsenide, Scanning electron microscopy, Americium

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Proceedings Article | 23 February 2009 Paper

Comparison of Ho:YAG and Er:YAG lasers for lithotripsy

Helena Jelínková, Oto Kőhler, Mitsunobu Miyagi, Petr Koranda, Michal Němec, Jan Šulc, Martin Fibrich, Jan Pokorny, Katsumasa Iwai, Yuji Matsuura

Proceedings Volume 7161, 71611H (2009) https://doi.org/10.1117/12.808667

KEYWORDS: Er:YAG lasers, Pulsed laser operation, Waveguides, Laser therapeutics, Laser ablation, In vitro testing, Laser systems engineering, Glasses, Silica, Hollow waveguides

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Proceedings Article | 20 November 2008 Paper

Comparison of tunable lasers based on diode pumped Tm-doped crystals

Jan Šulc, Helena Jelínková, Petr Koranda, Pavel Černý, Jan Jabczyński, Waldemar Żendzian, Jacek Kwiatkowski, Yoshiharu Urata, Mikio Higuchi

Proceedings Volume 7141, 71410C (2008) https://doi.org/10.1117/12.822357

KEYWORDS: Crystals, Laser crystals, Semiconductor lasers, Diodes, Tunable lasers, Absorption, Laser resonators, Resonators, Reflectivity, Output couplers

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We report on continuously tunable operation of a diode pumped lasers based on Tm-doped materials, emitting in the 1.8 - 2.μ1 m spectral band. In our study we compare results obtained with three various single crystals doped by Tm³⁺ ions: Yttrium Aluminum perovskite YAP (YAlO₃), Gadolinium orthovanadate GdVO₄, and Yttrium Lithium Fluoride YLF (YLiF₄). Following samples were available: the 3mm long a-cut crystal rod of Tm:YAP with 4% at. Tm/Y (diameter 3 mm); the 8mm long b-cut crystal rod of Tm:YLF with 3.5% at. Tm/Y (diameter 3 mm); the 2.7mm long a-cut crystal block of Tm:GdVO₄ with 2% at. Tm/Gd (crystal face 5×3 mm). For active medium pumping, the laser diode radiation was used. Because the tested samples differs significantly in absorption spectra, two fibre-coupled (core diameter 400 µm) temperature-tuned laser diodes were used: first operating at wavelength 793nm was used for Tm:YAP and Tm:YLF; the second operating at wavelength 802nm was used for Tm:GdVO₄. In both cases, the continuous power up to 20W was available for pumping. The diode radiation was focused into the active crystal by two achromatic doublet lenses with the focal length f = 75 mm. The measured radius of pumping beam focus inside the crystal was 260 µm. The longitudinally diode pumped crystals were tested in linear, 80mm long, hemispherical laser cavity. The curved (radius 150mm) output coupler reflectivity was ~ 97 % in range from 1.8 up to 2.1 μm. The pumping flat mirror had maximal reflectivity in this range and it had high transmission around 0.8 μm. A 1.5mm thick birefringent plate made from quartz (Lyot filter) inserted under a Brewster's angle was used as a tuning element. This plate was placed inside the resonator between the crystal and the output coupler. Using Tm:YAP crystal, the maximal output power of 2.8W in this set-up was obtained. The laser could be tuned from 1865nm up to 2036nm with a maximum at 1985 nm. Laser based on Tm:YLF crystal was tunable from 1835nm up to 2010nm with a maximum at 1928 nm (3.0W was reached). Using the Tm:GdVO₄ tunable operation with greater that 1W output at 1920nm and 130nm tuning range (1842-1972 nm) was demonstrated. The overall reached tuning range of over 200nm covers many important atmospheric absorption lines and contains also the local absorption peak of liquid water, making them attractive for applications such as high resolution spectroscopy, atmospheric remote sensing, laser radar, and laser microsurgery.

Proceedings Article | 18 November 2008 Paper

Lasers for lithotripsy

Petr Koranda, Michal Nemec, Helena Jelinková, Jan Pokorny, Oto Kőhler, Pavel Drlík, Mitsunobu Miyagi, Katsumasa Iwai, Yi-Wei Shi, Yuji Matsuura

Proceedings Volume 7138, 71380L (2008) https://doi.org/10.1117/12.817985

KEYWORDS: Er:YAG lasers, Waveguides, Laser therapeutics, Pulsed laser operation, Silica, Laser energy, Laser ablation, Resonators, Laser applications, Laser systems engineering

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Proceedings Article | 22 April 2008 Paper

Laser action in bulk Cr:ZnSe crystals

Petr Koranda, Helena Jelínková, Michal Nemec, Jan Šulc, Maxim Doroshenko, Tasoltan Basiev, Vitaly Komar, Andriy Gerasimenko, Vyacheslav Puzikov, V. Badikov, D. Badikov

Proceedings Volume 6998, 69980R (2008) https://doi.org/10.1117/12.780432

KEYWORDS: Crystals, Semiconductor lasers, Laser crystals, Pulsed laser operation, Optical pumping, Laser damage threshold, Tunable lasers, Continuous wave operation, Absorption, Laser energy

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Proceedings Article | 13 March 2008 Paper

Tunable lasers based on diode pumped Tm-doped vanadates Tm:YVO4, Tm:GdVO4, and Tm:LuVO4

Jan Šulc, Petr Koranda, Pavel Černý, Helena Jelínková, Yoshiharu Urata, Mikio Higuchi, Witold Ryba-Romanowski, Radosław Lisiecki, Piotr Solarz, Grażina Dominiak-Dzik, Marcin Sobczyk

Proceedings Volume 6871, 68711V (2008) https://doi.org/10.1117/12.763011

KEYWORDS: Crystals, Tunable lasers, Diodes, Semiconductor lasers, Laser resonators, Absorption, Resonators, Laser crystals, Continuous wave operation, Thulium

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Proceedings Article | 13 March 2008 Paper

Diode pumped Tm:YAP laser for eye microsurgery

Helena Jelínková, Petr Koranda, Jan Šulc, Michal Nemec, Pavel Černý, Jiří Pašta

Proceedings Volume 6871, 68712N (2008) https://doi.org/10.1117/12.763112

KEYWORDS: Eye, Semiconductor lasers, Absorption, Pulsed laser operation, Tunable lasers, Laser tissue interaction, Diodes, Tissues, Continuous wave operation, Microsurgery

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Proceedings Article | 5 March 2008 Paper

Mid-infrared tunable laser based on the Cr:ZnSe active crystal

Petr Koranda, Helena Jelínková, Michal Nemec, Jan Šulc, Maxim Doroshenko, Tasoltan Basiev, Vitaly Komar, Andriy Gerasimenko, Vyacheslav Puzikov, V. Badikov, D. Badikov

Proceedings Volume 6871, 68711T (2008) https://doi.org/10.1117/12.762899

KEYWORDS: Crystals, Semiconductor lasers, Laser crystals, Pulsed laser operation, Optical pumping, Prisms, Tunable lasers, Continuous wave operation, Dielectrics, Laser resonators

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Proceedings Article | 27 February 2008 Paper

Laser radiation bracket debonding

Tat'jana Dostálová, Helena Jelínková, Jan Šulc, Petr Koranda, Michal Nemec, Jaroslav Racek, Mitsunobu Miyagi

Proceedings Volume 6843, 684304 (2008) https://doi.org/10.1117/12.762256

KEYWORDS: Semiconductor lasers, Teeth, Laser dentistry, Ceramics, Natural surfaces, Laser systems engineering, Diodes, Americium, Temperature metrology, Tissues

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Proceedings Article | 8 March 2007 Paper

Er:YAG laser micro-preparation of hard dental tissue

Tat'jana Dostálová, Helena Jelínková, Michal Nemec, Petr Koranda, Mitsunobu Miyagi, Katsumasa Iwai, Yi-Wei Shi, Yuji Matsuura

Proceedings Volume 6425, 64250G (2007) https://doi.org/10.1117/12.698148

KEYWORDS: Er:YAG lasers, Teeth, Laser dentistry, Laser tissue interaction, Q switching, Q switched lasers, Composites, Tissues, Waveguides, Ultrasonics

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Proceedings Article | 20 February 2007 Paper

Cr:ZnSe laser crystal grown by Bridgeman technique: characteristics and laser performance

Petr Koranda, Helena Jelínková, Jan Šulc, Michal Nemec, Maxim Doroshenko, Tasoltan Basiev, Vitaly Komar, Andriy Gerasimenko, Vyacheslav Puzikov

Proceedings Volume 6451, 64510M (2007) https://doi.org/10.1117/12.698154

KEYWORDS: Crystals, Laser crystals, Laser resonators, Pulsed laser operation, Semiconductor lasers, Resonators, Continuous wave operation, Output couplers, Laser applications, Prisms

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Proceedings Article | 15 February 2007 Paper

Modification of mid-infrared radiation spatial structure caused by COP/Ag hollow waveguide

Michal Nĕmec, Helena Jelínková, Martin Fibrich, Petr Koranda, Mitsunobu Miyagi, Katsumasa Iwai, Yi-Wei Shi, Yuji Matsuura

Proceedings Volume 6433, 643306 (2007) https://doi.org/10.1117/12.698140

KEYWORDS: Waveguides, Semiconductor lasers, Diodes, Laser systems engineering, Hollow waveguides, Er:YAG lasers, Glasses, Mid-IR, Resonators, Dielectrics

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Proceedings Article | 17 April 2006 Paper

ZnSe:Cr²⁺ laser coherently pumped by Er:YAP 1.66 μm laser or Tm: YAP 1.97 μm laser

Maxim Doroshenko, Petr Koranda, Helena Jelínkova, Jan Šulc, Tasoltan Basiev, Vitaly Komar, Myron Kosmyna

Proceedings Volume 6190, 61901F (2006) https://doi.org/10.1117/12.684127

KEYWORDS: Laser resonators, Semiconductor lasers, Tunable lasers, Pulsed laser operation, Crystals, Laser energy, Laser crystals, Dielectrics, Resonators, Optical pumping

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Proceedings Article | 17 April 2006 Paper

Generation of powerful 3 microns radiation and its delivery

Miroslav Čech, Michal Němec, Petr Koranda, Helena Jelínkova, Mitsunobu Miyagi, Katsumasa Iwai, Yi-Wei Shi, Yuji Matsuura

Proceedings Volume 6190, 619016 (2006) https://doi.org/10.1117/12.663624

KEYWORDS: Er:YAG lasers, Resonators, Waveguides, Laser tissue interaction, Q switched lasers, Tissues, Switching, Q switches, Radiation effects, Glasses

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Proceedings Article | 22 February 2006 Paper

Er:YAG laser radiation for soft and hard urological tissue treatment

Petr Koranda, Helena Jelínkova, Michal Němec, Oto Köhler, Pavel Drlík, Jan Pokorný, Mitsunobu Miyagi, Katsumasa Iwai, Yi-Wei Shi, Yuji Matsuura

Proceedings Volume 6078, 60781E (2006) https://doi.org/10.1117/12.645926

KEYWORDS: Er:YAG lasers, Laser tissue interaction, Q switched lasers, Laser ablation, Waveguides, Tissues, Laser damage threshold, Laser systems engineering, Hollow waveguides, Pulsed laser operation

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Proceedings Article | 15 February 2006 Paper

Selective preparation of hard dental tissue: classical and laser treatments comparison

Tat'jana Dostálov, Helena Jelínkova, Michal Nĕmec, Petr Koranda, Mitsunobu Miyagi, Katsumasa Iwai, Yi-Wei Shi, Yuji Matsuura

Proceedings Volume 6137, 61370E (2006) https://doi.org/10.1117/12.647436

KEYWORDS: Er:YAG lasers, Laser tissue interaction, Tissues, Teeth, Laser dentistry, Natural surfaces, Q switching, Laser therapeutics, Composites, Q switched lasers

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Proceedings Article | 15 February 2006 Paper

Medical applications of 3 μm delivery waveguide system

Michal Němec, Helena Jelínkova, Petr Koranda, Mitsunobu Miyagi, Katsumasa Iwai, Yi-Wei Shi, Yuji Matsuura

Proceedings Volume 6083, 60830M (2006) https://doi.org/10.1117/12.645893

KEYWORDS: Waveguides, Tissues, Er:YAG lasers, Glasses, Q switching, Laser systems engineering, Mirrors, Mid-IR, Polymers, Silver

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Proceedings Article | 26 October 2005 Paper

Interaction of Er:YAG laser radiation with ureter tissue

Helena Jelínkova, Petr Koranda, Michal Němec, Jan Šulc, Oto Köhler, Pavel Drlík, Mitsunobu Miyagi, Yi-Wei Shi, Yuji Matsuura

Proceedings Volume 5968, 59680A (2005) https://doi.org/10.1117/12.660045

KEYWORDS: Er:YAG lasers, Laser tissue interaction, Waveguides, Q switched lasers, Laser ablation, Laser systems engineering, Tissues, Pulsed laser operation, Q switching, Glasses

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Proceedings Article | 27 April 2005 Paper

Electro-optically Q-switched Er:YAG laser

Petr Koranda, Helena Jelinkova, Michal Nemec, Jan Sulc, Miroslav Cech

Proceedings Volume 5707, (2005) https://doi.org/10.1117/12.588951

KEYWORDS: Er:YAG lasers, Resonators, Laser resonators, Switching, Q switched lasers, Electro optics, Oscillators, Q switches, Output couplers, Crystals

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Proceedings Article | 23 March 2005 Paper

Electro-optically Q-switched Er:YAG laser and its application

Petr Koranda, Michal Nemec, Helena Jelinkova, Jan Sulc, Miroslav Cech, Yi-Wei Shi, Yuji Matsuura, Mitsunobu Miyagi

Proceedings Volume 5777, (2005) https://doi.org/10.1117/12.611042

KEYWORDS: Er:YAG lasers, Q switched lasers, Switching, Electro optics, Resonators, Crystals, Waveguides, Mid-IR, Oscillators, Q switches

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Proceedings Article | 23 March 2005 Paper

Application of hollow glass waveguides in urological treatment

Michal Nemec, Petr Koranda, Helena Jelinkova, Oto Kohler, Pavel Drlik, Mitsunobu Miyagi, Yi-Wei Shi, Yuji Matsuura

Proceedings Volume 5691, (2005) https://doi.org/10.1117/12.588908

KEYWORDS: Er:YAG lasers, Laser tissue interaction, Q switched lasers, Laser ablation, Waveguides, Tissues, Laser systems engineering, Glasses, Laser damage threshold, Pulsed laser operation

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Proceedings Article | 23 March 2005 Paper

Compact hollow glass waveguide system for Er:YAG laser radiation

Helena Jelinkova, Michal Nemec, Petr Koranda, Mitsunobu Miyagi, Yi-Wei Shi, Yuji Matsuura

Proceedings Volume 5691, (2005) https://doi.org/10.1117/12.588933

KEYWORDS: Waveguides, Er:YAG lasers, Glasses, Laser systems engineering, Hollow waveguides, Mid-IR, Polymers, Tissues, Q switching, Silver

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Proceedings Article | 10 September 2004 Paper

Tooth bleaching using three laser systems, halogen-light unit, and chemical action agents

Tatjana Dostalova, Helena Jelinkova, Devana Housova, Jan Sulc, Michal Nemec, Petr Koranda, Mitsunobu Miyagi, Yi-Wei Shi, Yuji Matsuura

Proceedings Volume 5610, (2004) https://doi.org/10.1117/12.584425

KEYWORDS: Teeth, Alexandrite lasers, Scanning electron microscopy, Er:YAG lasers, Nd:YAG lasers, Laser dentistry, Laser systems engineering, Hydrogen, Tissues, Oxidation

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Proceedings Article | 10 September 2004 Paper

Interaction of mid-infrared laser radiation with soft ureter tissue

Helena Jelinkova, Oto Kohler, Michal Nemec, Petr Koranda, Jan Sulc, Pavel Drlik, Mitsunobu Miyagi, Yi-Wei Shi, Yuji Matsuura, Milan Kokta, Petr Hrabal

Proceedings Volume 5610, (2004) https://doi.org/10.1117/12.584323

KEYWORDS: Laser tissue interaction, Er:YAG lasers, Tissues, Laser systems engineering, Mid-IR, Natural surfaces, Hollow waveguides, Laser therapeutics, Crystals, Laser crystals

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Proceedings Article | 1 September 2004 Paper

Q-switching of mid-infrared Er:YAG laser and its radiation delivery system

Helena Jelinkova, Petr Koranda, Michal Nemec, Jan Sulc, Miroslav Cech, Mitsunobu Miyagi, Yi-Wei Shi, Yuji Matsuura

Proceedings Volume 5460, (2004) https://doi.org/10.1117/12.544817

KEYWORDS: Er:YAG lasers, Waveguides, Q switches, Switching, Mid-IR, Crystals, Electro optics, Q switching, Polymers, Laser systems engineering

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Proceedings Article | 13 July 2004 Paper

Near infrared Nd:YAP laser radiation transmission through the human eye tissue structure

Helena Jelinkov, Jiri Pasta, Jan Sulc, Michal Nemec, Petr Koranda, Petr Hrabal

Proceedings Volume 5314, (2004) https://doi.org/10.1117/12.529061

KEYWORDS: Eye, Retina, Tissues, Cornea, Laser tissue interaction, Vitreous, Absorption, Mirrors, Resonators, CCD cameras

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Proceedings Article | 8 July 2004 Paper

LiNbO3 Pockels cell for Q-switch of Er:YAG laser

Jan Sulc, Helena Jelinkova, Petr Koranda, Michal Nemec, Miroslav Cech

Proceedings Volume 5332, (2004) https://doi.org/10.1117/12.525990

KEYWORDS: Er:YAG lasers, Crystals, Polarization, Q switches, Electro optics, Resonators, Switching, Q switched lasers, Polarizers, Mirrors

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Proceedings Article | 10 June 2004 Paper

Hollow waveguide for giant Er:YAG laser pulses transfer

Michal Nemec, Helena Jelinkova, Petr Koranda, Miroslav Cech, Jan Sulc, Mitsunobu Miyagi, Yi-Wei Shi, Yuji Matsuura

Proceedings Volume 5317, (2004) https://doi.org/10.1117/12.525706

KEYWORDS: Waveguides, Er:YAG lasers, Polymers, Hollow waveguides, Polymer multimode waveguides, Glasses, Silver, Q switched lasers, Electro optics, Medicine

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Proceedings Article | 28 May 2004 Paper

Root canal surface after application of an x-ray opaque waveguide

Tatjana Dostalova, Helena Jelinkova, Marie Bartonova, Jan Sulc, Michal Nemec, Petr Koranda, Mitsunobu Miyagi, Yi-Wei Shi, Yuji Matsuura

Proceedings Volume 5313, (2004) https://doi.org/10.1117/12.528851

KEYWORDS: Waveguides, X-rays, Alexandrite lasers, Scanning electron microscopy, Teeth, Er:YAG lasers, Opacity, Laser dentistry, Photography, Hollow waveguides

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Showing 5 of 36 publications

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