LASER TECHNIQUES AND COUPLINGS WITH OTHER TECHNIQUES IN CONTEMPORARY PROBLEM SOLVING IN THEORY AND PRACTICE

1. Milesa Srećković, Elektrotehnički fakultet, Univerzitet u Beogradu, Bulevar Kralja Aleksandra 73, Serbia
2. Aleksander Kovačević, nstitute of Physics, University of Belgrade, Pregrevica 118, 11080 Belgrade, Serbia
3. Aco Janicijević, Tehnološko-metalurški fakultet, Univerzitet u Beogradu, Srbija, Serbia
4. Suzana Polić, Centralni institut za konzervaciju, Terazije 26, Beograd, Serbia
5. Zoran Nedić, Fakultet za fizičku hemiju Beograd, Serbia
6. Zoran Stević, Elektrotehnički fakultet, Univerzitet u Beogradu, Akademija tehničkih i primenjenih studija, Zdravka, Serbia
7. Sanja Jevtić, Akademija tehničkih i primenjenih studija, Zdravka Čelara 14, Beograd, Serbia
8. Milovan Janićijević, Metalac A. D., Gornji Milanovac, Kneza Aleksandra 212, Serbia

Problems of today, pro et contra of new breakthroughs in high frequencies and pandemics, seem to have called for even more complex correlations and couplings of the fields: / science, empiria (practice), mass-media in mastering the best possible description of certain processes in joint efforts to get out of a situation where our Globe had come to. More than ever, a lot of multidisciplinary work is needed, but also narrowly specialized sophisticated knowledge of the fields in which research is conducted.
In broad and generalized approach of coherent radiation interaction with material, the boundary of more classical scattering / interaction approaches seems to be lost, because the notion of stimulated processes and short-term pulses opened close areas in interaction with material (in a broad sense including bio-phenomena) and smeared the moment when living cells began to participate in optical recordings, and it is known that statistics from biological processes may solve traffic problems, etc.
In this paper, the interaction of materials with stimulated electromagnetic radiation, its results and the most accurate description of possible processes will be considered. By emphasising the optically visible, infrared and ultraviolet areas, some implementations of the rest of the electromagnetic spectrum and modulation of materials or their measurement possibilities will be sketched.
For selected examples of materials of various classes, their possible description of characteristics before and after interaction from the point of view of laser, thermal immaging, and other techniques will be considered, where records of induced acoustic or series of other coupled effects like magneto-optical, electro-optical, etc. come to the fore. Selected theoretically more complex models with computer support will also be considered, as well as simple final formulas, which lead to relatively useful estimates in the outcome of the interaction during monitoring a particular output channel.
In the spectroscopic approach, parts of spectroscopies that have laser or stimulated sources included and in that way new or only improved spectroscopies opened, will be discussed.

In this regard, interpretations become very sensitive areas. The approach of the application of laser and non-laser techniques to materials in general, (e.g. to biomaterials, or to heritage objects) and defining the samples and measurements on selected objects or materials, as well as practice, theory, reality in the fields of cultural heritage, medicine or specific areas which include damages, useful destructive processes or explosive processes in the use of laser techniques again raises the issue of laser damages and their definitions. Entering into the field of protection by the induction of laser breakdown or by the initiation of various processes, must have detailed knowledge of the main optical indicators / descriptors of the material, including the concepts of reflection coefficients, scattering, absorption, thermodynamic parameters, ignition point, particle size if the material is in the powder state and similar.

Ključne reči: laser techniques; interaction; scattering; materials; description; visualization

Tematska oblast: SIMPOZIJUM A - Nauka materije, kondenzovane materije i fizika čvrstog stanja

Datum: 06.08.2020.

Contemporary Materials 2020 - Savremeni Materijali


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