Hana Turčičová

Karlova univerzita, matematicko-fyzikální fakulta, Praha, 1971

od 1972 ve FzÚ AV ČR

1. Modifikace krystalických oxidových látek v nerovnovážném plazmatu výboje v molekulárních plynech
2. Stimulovaný Brillouinův rozptyl ve vysoce přechodovém režimu jódového fotodisociačního laseru

1. A high-quality phase conjugation of the stimulated Brillouin scattering has been studied in a highly transient regime. A mask restoration in the backscattered signal has been used as a proof of phase conjugation. The laser beam insertion into the Brillouin cell was accomplished by a special two-lens system relaying the mask's real image in front of the combination focal plane at a distance comparable with the size of the SBS interaction region. A possibility of the construction of a phase conjugated mirror even in high-power laser systems with very short pulses thus has been demonstrated.
2. Non-equilibrium plasma of the radio-frequency glow discharge in molecular gases (mainly hydrogen) has been used for processing widely used crystalline oxides (LiNbO₃, BaTiO₃, PbWO₄). Physical properties of thus modified surfaces of the oxides were different from those of the bulk. Composition changes have been studied by NDP, RBS, XPS, REELS, structure modification by XRD, optical and electrical properties by UV-VIS-IR spectrometry, ellipsometry and four-point measurements, resp., morphology by AFM. The dependence of these surface changes on plasma parameters has been examined. It was found that the effect of the plasma processing ranges from an insertion of point defects at low concentration related mainly to chemical reduction of the material up to a destruction of the original surface structure which can reach a depth of about 0.5 micrometer. The plasma modification thus make similar point and other defects in crystal lattice as ion implantation or metal doping. A continuous transition from a surface film of almost metallic conduction to the bulk material with the original insulator properties can be produced.

Publications

Turčičová H.: Degradation of CO , N and He mixture at low pressure monitored via wave instabilities

Králiková B., Skála J., Straka P., Turčičová H.: Highly non-steady state regime of the stimulated Brillouin scattering at an iodine laser

Turčičová H., Arend H., Jarolímek O.: A low-resistance layer on LiNbO3 produced in hydrogen RF discharge

Turčičová H., Vacík J., Červená J., Radio-frequency plasma processing of oxide crystalline materials (LiNbO3)

Turčičová H., Vacík J., Červená J., Železný V., Hydrogen/oxygen radio-frequency plasma processing of LiNbO3

Straka P., Králiková B., Skála J., Turčičová H., Highly non-steady-state regime of stimulated Brillouin scattering at laser PERUN

Turčičová H., Vacík J., Červená J., Peřina V., Polcarová M., Brádler J. Železný V., Modification of surface structure of LiNbO3 in H2/O2 radio-frequency discharge

Arend H, Montemezzani G., Szot K. and Turcicova H., Importance of oxidation and reduct ion of barium titanate in material science

Kraliková B., Skála J. Straka P, and Turčičová H., Image restoration in a highly non-steady-state regime of stimulated Brillouin scattering in a photodissociation iodine laser

Turčičová H., Peřina V., Vacík J., Červená J., Zemek J., Železný V., and Arend H., Plasma processing of LiNbO3 in a hydrogen/oxygen radio-frequency discharge

Turcicova H., Vacik J., Cervena J., Perina V., Polcarova M., Bradler J., Zelezny V., and J. Zemek, LiNbO3 exposed to radio-frequency plasma

Turčičová H., Přeučil S., Vacík J., Červená J., Li depth profile anomaly after radio-frequency hydrogen plasma processing of single crystal LiNbO3, 9th European Meeting on Ferroelectricity, Prague, July 12-16, 1999

M. Budnar, B. Zorko, P. Pelicon, J. Špirková-Hradilová, P. Kolářová-Nekvindová, and H. Turčičová, ERDA study of H+ incorporated into lithium niobate optical layers

B. Králiková, P. Straka, J. Skála, H. Turčičová, High-quality phase conjugation even in a highly transient regime of stimulated Brillouin scattering

H. Turčičová, J. Zemek, J. Vacík, J. Červená, V. Peřina, M. Polcarová, and J. Brádler, Surface Analysis of LiNbO3 Single Crystals Modified by Radio-Frequency Hydrogen Plasma

H. Turčičová, J. Prachařová, J. Červená, and J. Vacík, Sheet Resistance of LiNbO3 Wafers Processed in Radio-Frequency Plasma of Hydrogen