Memories to Stanislaw Kielich: My teacher,my mentor and my friend

摘要

There is no doubt that Kielich wrote his papers in his own elegant and specific style. He invented and introduced a special formalism suitable for molecular and nonlinear physics based on Cartesian tensors in which he made use of his deep knowledge of achievements of the old masters of molecular physics. In his scientific work he has shown his great involvement in molecular physics. In the peak of his carrier he wrote his papers fast and efficiently. In the nineteen sixties after construction of the laser, a lot of new optical (linear and nonlinear) effects were discovered. Several of them Kielich had already on his mind.