Open AccessA photon accelerator -- Large blueshifting of femtosecond pulses in semiconductors
Author(s) -
V. I. Berezhiani,
S. M. Mahajan,
I. G. Murusidze
Publication year - 1997
Language(s) - English
Resource type - Reports
DOI - 10.2172/481608
Subject(s) - femtosecond , laser , physics , photon , ultrashort pulse , semiconductor , wavelength , pulse (music) , optics , blueshift , photon energy , nonlinear optics , atomic physics , optoelectronics , photoluminescence , detector
The availability of relatively high intensity (I > 10{sup 9}Wcm{sup {minus}2}) [but moderate ({approximately} nJ) total energy], femtosecond laser pulses with wavelengths ranging from the ultraviolet to the mid-infrared has opened the doors for a serious investigation of the nonlinear optical properties of matter on ultrashort time scales in a new parameter regime. Even small intensity-dependent nonlinearities can begin to play a major role in the overall electrodynamics, and in determining the fate of the propagating pulse. It is shown that a femtosecond pulse propagating near a two-photon transition in a semiconductor waveguide can undergo a large blueshift