Transient Gratings in Semiconductors
نویسندگان
چکیده
The diffraction of light by a non permanent grating was first demonstrated using a grating-like structure induced by ultrasonic waves that were passed into a crystal. The invention of the laser with its extraordinary coherence then made it pos sible to use the interference between light waves to create transient gratings in various media such as solids, liquids with saturable absorption, and gases in which resonances were excited. These lightinduced gratings aroused considerable interest in various areas of laser-related research, and they eventually led to meth ods for investigating optically excited materials [1, 2].
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تاریخ انتشار 2017