We study GaInAs/GaInNAs superlattice structures grown on InP substrate as potential candidates for photoconductive terahertz devices or saturable absorbers working at 1.55μm wavelength. The N-rich GaInNAs layers are flat, with no three-dimensional islanding, and act as trapping layers where carriers can recombine rapidly. The carrier lifetime in GaInAs/GaInNAs superlattice was measured for various growth parameters using time-resolved differential transmission experiments at 1.55μm wavelength. The carrier lifetime is found to depend strongly on N content and can be reduced down to 3.8 ps for samples with 14% of N. The mechanisms involved in the capture process of photocarriers are discussed.

1.
A. C.
Warren
,
N.
Katzenellenbogen
,
D.
Grischkowsky
,
J. M.
Woodall
,
M. R.
Melloch
, and
N.
Otsuka
,
Appl. Phys. Lett.
58
,
1512
(
1991
).
2.
M.
Suzuki
and
M.
Tonouchi
,
Appl. Phys. Lett.
86
,
051104
(
2005
).
3.
J.
Mangeney
,
N.
Chimot
,
L.
Meignien
,
N.
Zerounian
,
P.
Crozat
,
K.
Blary
,
J. F.
Lampin
, and
P.
Mounaix
,
Opt. Express
15
,
8943
(
2007
).
4.
B.
Sartorius
,
H.
Roehle
,
H.
Künzel
,
J.
Böttcher
,
M.
Schlak
,
D.
Stanze
,
H.
Venghaus
, and
M.
Schell
,
Opt. Express
16
,
9565
(
2008
).
5.
D. C.
Driscoll
,
M. P.
Hanson
,
A. C.
Gossard
, and
E. R.
Brown
,
Appl. Phys. Lett.
86
,
051908
(
2005
).
6.
A. K.
Azad
,
R. P.
Prasankumar
,
D.
Talbayev
,
A. J.
Taylor
,
R. D.
Averitt
,
J. M. O.
Zide
,
H.
Lu
,
A. C.
Gossard
, and
J. F.
O’Hara
,
Appl. Phys. Lett.
93
,
121108
(
2008
).
7.
F.
Ospald
,
D.
Maryenko
,
K.
von Klitzing
,
D. C.
Driscoll
,
M. P.
Hanson
,
H.
Lu
,
A. C.
Gossard
, and
J. H.
Smet
,
Appl. Phys. Lett.
92
,
131117
(
2008
).
8.
M.
Le Dû
,
J. -C.
Harmand
,
O.
Mauguin
,
L.
Largeau
,
L.
Travers
, and
J. -L.
Oudar
,
Appl. Phys. Lett.
88
,
201110
(
2006
).
9.
M.
Le Du
,
J. -C.
Harmand
,
K.
Meunier
,
G.
Patriarche
, and
J. L.
Oudar
,
IEE Proc.: Optoelectron.
151
,
254
(
2004
).
10.
P. R. C.
Kent
and
A.
Zunger
,
Phys. Rev. Lett.
86
,
2613
(
2001
).
11.
S. -W.
Feng
,
Y. -C.
Cheng
,
Y. -Y.
Chung
,
C. C.
Yang
,
Y. -S.
Lin
,
C.
Hsu
,
K. -J.
Ma
, and
J. -I.
Chyi
,
J. Appl. Phys.
92
,
4441
(
2002
).
12.
M.
Griebel
,
J. H.
Smet
,
D. C.
Driscoll
,
J.
Kuhl
,
C. A.
Diez
,
N.
Freytag
,
C.
Kadow
,
A. C.
Gossard
, and
K. V.
Klitzing
,
Nature Mater.
2
,
122
(
2003
).
13.
I. A.
Buyanova
,
W. M.
Chen
,
G.
Pozina
,
J. P.
Bergman
,
B.
Monemar
,
H. P.
Xin
, and
C. W.
Tu
,
Appl. Phys. Lett.
75
,
501
(
1999
).
14.
K.
Miura
,
Y.
Nagai
,
Y.
Iguchi
,
H.
Okada
, and
Y.
Kawamura
,
J. Cryst. Growth
301
,
575
(
2007
).
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