Enhanced third-order nonlinearity in semiconductors giving rise to 1 THz radiation

Third harmonic generation (THG) efficiency is shown to be a greatly enhanced at the onset of inelastic scattering of electrons on optic phonons. Scaling experiments are performed on n-type InP at the pump wave frequency of 9.43 GHz at 80 K. Monte Carlo modeling is employed for scaling the effect to the 3(rd) harmonic frequency of 1 THz. The THG efficiency in n-type GaAs and InP as well as in the wurtzite phase of n-type InN and GaN compound crystals is compared to that in n-type Si. The efficiency maximum is found to weaken due to the quasi-elastic scattering on acoustic phonons and elastic scattering on ionized impurities. Nevertheless, the THG efficiency at 1 THz in InP crystals cooled down to liquid nitrogen temperatures is predicted to be 2 orders of magnitude higher than the reference value of 0.1% experimentally recorded up to now in n-type Si.


Publié dans:
International Journal of Infrared and Millimeter Waves, 21, 4, 593-602
Année
2000
ISSN:
0195-9271
Laboratoires:
SPC
CRPP




 Notice créée le 2008-04-16, modifiée le 2018-09-13


Évaluer ce document:

Rate this document:
1
2
3
 
(Pas encore évalué)