Abstract
A number of new and interesting experiments are based on the coupling of laser light into the tunneling junction of a scanning tunneling microscope (STM). The generation of laser difference frequencies in the STM up to the microwave region using CO2 laser radiation has been reported.1 An experiment using laser light rectification to measure the electron tunneling time has been proposed.2 Another application of a laser driven STM is the resonant excitation of vibrations of atoms and molecules adsorbed on surfaces.
© 1990 Optical Society of America
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