Nanoporous honeycomb membranes on InP (111) surfaces emit ultrafast coherent terahertz pulses under near-infrared optical excitation. Irradiating the membranes with heavy noble gas Kr or Xe ions enhances the terahertz emission. The emission does not vary with in-plane magnetic field rotation and exhibits three-cycle dependence on azimuthal-angle rotation. Both suggest the terahertz source is not transient currents but optical rectification enhanced by the heavy-ion irradiation.

1.
B.
Ferguson
and
X. -C.
Zhang
,
Nature Mater.
1
,
26
(
2002
).
2.
S.
Hargreaves
and
R. A.
Lewis
,
Appl. Phys. Lett.
93
,
242101
(
2008
).
3.
K.
Radhanpura
,
S.
Hargreaves
,
R. A.
Lewis
, and
M.
Henini
,
Appl. Phys. Lett.
94
,
251115
(
2009
).
4.
M.
Reid
,
I.
Cravetchi
,
R.
Fedosejevs
,
I. M.
Tiginyanu
,
L.
Sirbu
, and
R. W.
Boyd
,
Phys. Rev. B
71
,
081306
(R) (
2005
).
5.
M.
Reid
,
I.
Cravetchi
,
R.
Fedosejevs
,
I. M.
Tiginyanu
, and
L.
Sirbu
,
Appl. Phys. Lett.
86
,
021904
(
2005
).
6.
J.
Lloyd-Hughes
,
S. K. E.
Merchant
,
L.
Sirbu
,
I. M.
Tiginyanu
, and
M. B.
Johnston
,
Phys. Rev. B
78
,
085320
(
2008
).
7.
V. V.
Ursaki
,
I. M.
Tiginyanu
,
O.
Volciuc
,
V.
Popa
,
V. A.
Skuratov
, and
H.
Morkoç
,
Appl. Phys. Lett.
90
,
161908
(
2007
).
8.
A. V.
Burlacu
,
V.
Ursaki
,
V. A.
Skuratov
,
D.
Lincot
,
T.
Pauporte
,
H.
Elbelghiti
,
E. V.
Rusu
, and
I. M.
Tiginyanu
,
Nanotechnology
19
,
215714
(
2008
).
9.
J.
Lloyd-Hughes
,
E.
Castro-Camus
,
M. D.
Fraser
,
C.
Jagadish
, and
M. B.
Johnston
,
Phys. Rev. B
70
,
235330
(
2004
).
10.
S.
Langa
,
J.
Carstensen
,
M.
Christophersen
,
H.
Föll
, and
I. M.
Tiginyanu
,
Appl. Phys. Lett.
78
,
1074
(
2001
).
11.
S.
Hargreaves
,
K.
Radhanpura
, and
R. A.
Lewis
,
Phys. Rev. B
80
,
195323
(
2009
).
12.
C. S.
Bleasdale
and
R. A.
Lewis
,
Proc. SPIE
7728
,
77281X
(
2010
).
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