Author(s):
1. Milesa Srećković, Elektrotehnički fakultet, Univerzitet u Beogradu, Bulevar Kralja Aleksandra 73, Serbia
2. Aleksandar Bugarinović, 2Telekom Srpske, Bijeljina, Republika Srpska, B i H, , Republic of Srpska, Bosnia and Herzegovina
3. Aco Janicijević, Tehnološko-metalurški fakultet, Univerzitet u Beogradu, Srbija, Serbia
4. M. Janićijević, Metalac A. D., Gornji Milanovac, Serbia
5. P. Jovanić, Institut za multidisciplinarna istraživanja Univerziteta u Beogradu, Serbia
6. Z. Fidanovski, RAF – fakultet, Beograd, Serbia
7. D. Knežević, Elektrotehnički fakultet, Univerzitet u Beogradu, Bulevar Kralja Aleksandra 73, Serbia

Abstract:
Abstract:. In specific orders of magnitude the operating parameters of the laser system and the wide variety of materials, there are many positive and negative features and processes of change, in a positive and negative sense (conditionally) of material properties. Although this is a field with several decades of history, development and lasers as the source, based on materials of various physical states and material, is an area in which there are always new, unplanned processes. So are constantly working on new theoretical approaches and the modification of existing approaches and the interpretation of the rich experimental literature. In all, relatively possible experimental situations remain in force existing view that the experiment provides the most right answers. The paper discusses selected bases of theoretical foundation, to consider the interaction of coherent beams and material experiments, material or exposure laser beams, the results change and diagnostic techniques, which gives a description of the initial and final states of the material, in standard or specific purposes. In a wide range from the shortest electromagnetic pulses today, under atto-seconds to continuous operation and with the stimulated processes in a large part of the electromagnetic spectrum, with the producing states of nonlinear material properties are connected to various areas and through the frequency chains and metrology, too. Many processes have become more reliable, and the experiments are getting more reproducible. For the assessment thresholds for generation of nonlinear effects, which are used in gathering new material properties or quantum generator of new outputs, there are many areas that deserve explanations because of the conditions and relations of different thresholds and nonideal technical support. Since the quantum generators connected, for a long time, via process of pumping and diverse interaction with other areas of nuclear physics, acoustics and materials science, the effects of selection or obtaining isotopes with laser techniques, optical bistability, parametric processes, with the soliton laser, cooling of atoms and higher harmonics, can not ignore a long time ago. On the other hand, the process of cavitation, acceleration of nucleation, the formation of pores, et al., as to cause the laser beams in the material, belonging to particular current problems. Observation of the problem should follow the trend of objectification. Descriptions, in a broad sense, with a variety of appliances, based on computer support and numerical-analytical approach, involving many models, where, by the thermal, kinetic, hydrodynamic models, seek out and Sierpinski carpet or special phenomenological approach, which requires sophisticated diagnostic measurement techniques and diagnostics with or without the quantum generator.

Key words:
Keywords: laser,modification of properties,nonlinear effects,models for the description,diagnostics.

Thematic field:
SYMPOSIUM A - Science of matter, condensed matter and physics of solid states

Date of abstract submission:
15.06.2015.

Conference:
Contemporary Materials 2015 - Savremeni Materijali

Applied paper from author