Title :
Theoretical investigation and modeling of mid-infrared pulse generation in a GaAs crystal using 30 fs pulses from fiber-optical laser
Author :
Hovhannisyan, D.L. ; Martirosyan, R.M. ; Nikoghosyan, A.S. ; Hakhoumian, A.A. ; Laziev, E.M. ; Hovhannisyan, G.D.
Author_Institution :
Yerevan State Univ., Yerevan, Armenia
Abstract :
The results of the THz radiation generation via interaction of 30 fs fiber-optical lasers pulses with the wavelengths of 1.98 and 1.55 μm in GaAs are presented. Numerical time-integration by the finite-difference method of nonlinear Maxwell-equation systems has been performed. The process of mid-infrared pulse generation obtained from spectral filtration of a supercontinuum formed in the pump-pulse spectrum at the output of GaAs is studied.
Keywords :
III-V semiconductors; Maxwell equations; fibre lasers; finite difference methods; gallium arsenide; nonlinear equations; optical filters; optical materials; optical pulse generation; supercontinuum generation; terahertz wave generation; GaAs; GaAs crystal; GaAs output; fiber-optical laser pulses; finite difference method; midinfrared pulse generation; nonlinear Maxwell-equation systems; numerical time-integration; pump-pulse spectrum; spectral filtration; supercontinuum formation; terahertz radiation generation results; theoretical modeling; time 30 fs; wavelength 1.55 mum; wavelength 1.98 mum; Absorption; Crystals; Finite difference methods; Gallium arsenide; Laser modes; Nonlinear optics; Ultrafast optics;
Conference_Titel :
Infrared Millimeter and Terahertz Waves (IRMMW-THz), 2010 35th International Conference on
Conference_Location :
Rome
Print_ISBN :
978-1-4244-6655-9
DOI :
10.1109/ICIMW.2010.5612493
