Ukrainian Journal of Physical Optics

Number 2, Volume 5, 2004

Titles and authors	pages
On the occasion of the Seventieth Birthday of Professor Orest Vlokh	37
Parametrical Optics – Background and Trends of Development O.Vlokh	40
Thermal Expansion and Phase Transformation Observation in Cs₂BX₄ (B=Hg, Cd; X=Br, Cl) Crystals 3. The Common Phase Diagram for Cs₂HgCl₄, Cs₂HgBr₄ and Cs₂CdBr₄ Crystals Vlokh R., Trach I. and Girnyk I.	41
Electronic Bands Behaviour at Sinusoidal Potential Presence of Incommensurate Crystals Vlokh R., Vlokh O. and Lukiyanets B.	46
Effect of Illumination on the Dielectric Properties of Lead Molibdate Crystals Volnianskiy M.D., Kudzin A.Yu., Plyaka S.N. and Balasmeh Z.H.	51
Magnetogyration in Absorbing Cubic Bi₁₂GeO₂₀ Crystals Vlokh R., Adamenko D., Say A., Klymiv I. and Vlokh O.G.	57
Studies of Phase Transition Sequence in (C₃H₇NH₃)₂CuCl₄ Crystals Kushnir O., Shopa R., Girnyk I. and Polovynko I.	61
Acoustooptic Interaction in Barium Beta-Borate Crystals Martynyuk-Lototska I., Dudok T., Dyachok Ya., Burak Ya. and Vlokh R.	67
Combined Piezoelectrooptic Effect in Rochelle Salt at the Phase Transition Vlokh R., Mys O. and Kostyrko M.	70
Errata	76

On the occasion of the Seventieth Birthday of Professor Orest Vlokh (download full version)

On the occasion of the Seventieth Birthday of Professor Orest Vlokh

Professor Orest Vlokh was born on July 2, 1934 in L'viv. During his labour activity he filled a lot of responsible positions, among them

Head of the Nonlinear Optics Department at the L'viv University,
Head of the Special Design Office “Modulator” at the L'viv University,
Director of the Institute of Physical Optics of the Ministry of Education and Science of Ukraine,
Vice President of the Academy of Science of Higher Education of Ukraine,
Editor-in-Chief of “Ukrainian Journal of Physical Optics”,
The first head of L'viv regional branch of Ukrainian popular political organization “RUKH”,
Deputy of the Ukrainian Parliament.

Some of these institutions and organizations have been founded just by Professor Vlokh.
The most important achievements by Professor O.Vlokh and his contributions to development of science are the discovery of a new phenomenon of physical optics - electrogyration (1969) - and creation by him of the scientific school on crystal optics (see the next page).
The friends, colleagues, followers, disciples and the former and present students congratulate sincerely Professor Orest Vlokh with his 70-th birthday and wish him a sound health and a great further activity.

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Ukrainian Journal of Physical Optics

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Number 2, Volume 5, 2004