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Study on the possibilities of controlling the laser output beam properties by an intracavity deformable mirror

100%

Rabczuk G. , Sawczak M.

tom Vol. 14, No. 2

141-147

The possibilities of controlling the laser beam properties by a deformable mirror introduced into the laser optical cavity were studied theoretically and experimentally. The experiments were performed under conditions of an industrial high power transverse flow cw CO₂ laser operating with a stable resonator of a folded configuration. A deformable bimorph mirror of a surface profile controlled by the voltage applied to the mirror electrodes is implemented to the laser system as a back cavity mirror or as a one of the inner folding mirrors. The near- and far- field characteristics of the laser beam versus the resonator configuration controlled by the changes of the focal length of the deformable mirror are discussed in the paper. The analysis reveals that the resonator with an inner deformable mirror is much more sensitive to the mirror curvature variations than the resonator in which the deformable mirror is used as a back cavity mirror. The presented results show that dynamic and controllable changes in the resonator properties result in the controlled modification and optimisation of the laser output power and spatial parameters of the laser radiation.

O inteinach: ich budowie, ewolucji i zastosowaniach

100%

Sawczak M. , Szweykowska-Kulinska Z.

nr 1

69-81

Root hair morphogenesis in two mutant Arabidopsis thaliana plants carrying disrupted genes encoding nuclear cap-binding protein

80%

Sawczak M. , Piontek P. , Jarmolowski A. , Szweykowska-Kulinska Z.

nr 2 Spec.Vol.