Prof. Dr. Christoph Lange

"Numerous interesting nonlinear interactions of electronic excitations and electromagnetic pulses occur on timescales of only a few femtoseconds (1 fs = 10^-15 s). My group is developing novel methods to generate tailored optical pulses with tunable central frequencies in the spectral range from 0.1 THz (1 THz = 10¹² Hz) to >100 THz, peak field strengths on the scale of atomic bonds, and waveforms down to the range of single oscillations of the light field. These pulses are detected by modern time domain spectroscopy with a resolution far below the duration of an optical cycle - similar to an oscilloscope for light. In addition, special THz resonators fabricated by electron beam lithography allow control of electromagnetic fields and nonlinear interactions on subcycle and subwavelength scales."

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