Acknowledgement

• Most of the research activities presented on this website evolved from supervising gradu- ate and doctoral students. It was a great pleasure to work with these motivated and inspir- ing young persons. • But none of the projects could have really been realized without the excellent support by an engaged laboratory team. Special thanks to Jürgen Pfuhl, Gerd Neufeld, Günther Helm- rich, Hans-Peter Herda and Marion Kollmeier. • The School of Electrical Engineering provides good facilities and excellent laboratory equip- ment. Many projects were supported by the Deutsche Forschungsgemeinschaft and by in- dustrial cooperations. • Special thanks to my colleagues - Prof. Dr. Günter Guthöhrlein (HSU HH) for a continuous excellent cooperation in laser spectroscopy, - Prof. Dr. Daniel Grischkowsky (IBM & OSU-Ok) for our successful cooperation in Femtosecond Terahertz Spectroscopy. Regrettably, he passed away in June 2022. - Prof. Dr. Murry Salby (Bolder Col. USA; Sidney Australia) for many important contributions and stimulating discussions in Climate Sciences. Unfortunately, he passed away in April 2022. - Dr. Willie Soon and Dr. Ronan Connolly (Center for Environmental Research and Earth Sciences (CERES, Salem, MA, USA) for a close cooperation in the field of Climate Sciences.

Physics & Climate

This Website presents a summary of the main research activities

• as Professor for Laser Engineering & Materials Science, from 2001 - 2009 also for Experimental Physics, at the Helmut-Schmidt-University Hamburg (HSU HH), Germany, • as Visiting Scientist at IBM-Watson Research Center, Yorktown Heights, • as Visiting Scientist at Oklahoma State University, Stillwater, Oklahoma, • and on special fields of Climate Sciences after retiring 2010.

Preliminary Notes

Experimental Physics and Materials Science are basic disciplines for academic studies of Engi- neering Sciences. At the Helmut-Schmidt-University these subjects are integrated in the School of Electrical Engineering to teach undergraduates of Electrical Engineering and Economic Engi- neering in these disciplines. For advanced-level studies specialized programs on laser applications, spectroscopy, quantum optics and opto-electronics are offered with the possibility for young scientists to accomplish their studies with a master or doctoral degree. The research activities of the Laser-Physics-Group were mainly focusing on applications of lasers in science and engineering. A compilation of these activities is listed under the link: Laser Research The research activities in Climate Science, which started in 2010, are summarized under the link: Climate.