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Laser-PMMA Interaction and Mechanical Stresses

100%

Kovačević A., Srećković M., Gospavić R., Ristić S., Jovanić P.

Acta Physica Polonica A

2007

vol. 112

issue 5

981-986

The polymethylmetacrylate samples were exposed to laser beams of various types of lasers. The modifications of the surfaces of the samples were analyzed by light microscopy and scanning electron microscopy. Numerical approach to thermal distribution for specified power ranges of selected lasers was obtained. The results of polymethylmetacrylate drilling and cutting performed by laser and non-laser means were compared by photoelastic methods.

Models of Interactions of Laser Beams with Materials of Interest for Optical Components and Provoked Damages

86%

Srećković M., Ilić J., Kovačević A., Pantelić S., Latinović Z., Borna N., Ćosović V.

Acta Physica Polonica A

2007

vol. 112

issue 5

935-940

Models of interactions of laser beams with materials of interest for optical components are presented in this paper. Special attention is paid to damages which appear within both active materials and optical components along the path of a propagating beam with theoretical treatment via various models.

Zeeman Coherences Narrowing due to Ramsey Effects Induced by Thermal Motion of Rubidium Atoms

73%

Grujić Z., Mijailović M., Panić B., Minić M., Kovačević A., Obradović M., Jelenković B., Cartaleva S.

Acta Physica Polonica A

2007

vol. 112

issue 5

799-803

We investigated effects of spatially separated laser fields on amplitudes and widths of electromagnetically induced transparency in M-type atomic system. We have shown narrowing of the electromagnetically induced transmission resonance and therefore enhancement of medium non-linearities that can be explained by diffusion-induced Ramsey narrowing. Depending on the polarization of two laser beams, narrow probe Hanle transmission resonance changes its sign in respect of the profile obtained when the pump laser beam is off.

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3 Acta Physica Polonica A

3 2007

3 Kovačević A.

2 Srećković M.

1 Borna N.

1 Cartaleva S.

1 Gospavić R.

1 Grujić Z.

1 Ilić J.

1 Jelenković B.

1 Jovanić P.

1 Latinović Z.

1 Mijailović M.

1 Minić M.

1 Obradović M.

1 Panić B.

1 Pantelić S.

1 Ristić S.

1 Ćosović V.

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Laser-PMMA Interaction and Mechanical Stresses

Models of Interactions of Laser Beams with Materials of Interest for Optical Components and Provoked Damages

Zeeman Coherences Narrowing due to Ramsey Effects Induced by Thermal Motion of Rubidium Atoms