Cubic optical nonlinearity of free electrons in bulk gold.
A fast (Tau(response) <90 fs) free-electron spin-f lipping frequency-degenerate nonlinearity with a signif icant value of|chi((3))(xxyy)(omega,omega,omega,-omega)chi((3))(xxyy)(omega,omega,omega,-omega)|~10(-)(8)esu has been observed in bulk gold at 1260 nm by use of a new pump-probe polarization-sensitive technique.
Zheludev
N I
NI
Bennett
P J
PJ
Loh
H
H
Popov
S V
SV
Shatwell
I R
IR
Svirko
Y P
YP
Gusev
V E
VE
Kamalov
V F
VF
Slobodchikov
E V
EV