We demonstrate that the average output power of the terahertz pulses generated by difference-frequency generation in stacked GaAs wafers is scaled up by a factor of 160. Such power scaling is made possible by achieving first-order quasiphase matching for the efficient terahertz conversion in stacked 590μm thick (110) GaAs wafers using two CO2 laser pulses. The highest average output power is measured to be 29.8μW by stacking ten wafers.

1.
B.
Williams
,
S.
Kumar
,
Q.
Hu
, and
J.
Reno
,
Opt. Express
13
,
3331
(
2005
).
2.
Q.
Chen
,
Z.
Jiang
,
G. X.
Xu
, and
X. -C.
Zhang
,
Opt. Lett.
25
,
1122
(
2000
).
3.
J.
Ahn
,
A. V.
Efimov
,
R. D.
Averitt
, and
A. J.
Taylor
,
Opt. Express
11
,
2486
(
2003
).
4.
K. L.
Yeh
,
M. C.
Hoffmann
,
J.
Hebling
, and
K. A.
Nelson
,
Appl. Phys. Lett.
90
,
171121
(
2007
).
5.
B. B.
Hu
and
M. C.
Nuss
,
Opt. Lett.
20
,
1716
(
1995
).
6.
J. L.
Johnson
,
T. D.
Dorney
, and
D. M.
Mittleman
,
Appl. Phys. Lett.
78
,
835
(
2001
).
7.
W.
Shi
and
Y. J.
Ding
,
Appl. Phys. Lett.
83
,
848
(
2003
).
8.
Y.
Jiang
and
Y. J.
Ding
,
Appl. Phys. Lett.
91
,
091108
(
2007
).
9.
K.
Suizu
,
K.
Miyamoto
,
T.
Yamashita
, and
H.
Ito
,
Opt. Lett.
32
,
2885
(
2007
).
10.
Y. J.
Ding
,
IEEE J. Sel. Top. Quantum Electron.
10
,
1171
(
2004
).
11.
S. Ya.
Tochitsky
,
J. E.
Ralph
,
C.
Sung
, and
C.
Joshi
,
J. Appl. Phys.
98
,
026101
(
2005
).
12.
D. E.
Thompson
and
P. D.
Coleman
,
IEEE Trans. Microwave Theory Tech.
22
,
995
(
1974
).
13.
J. E.
Schaar
,
K. L.
Vodopyanov
, and
M. M.
Fejer
,
Opt. Lett.
32
,
1284
(
2007
).
14.
T.
Skauli
,
P. S.
Kou
,
K. L.
Vodopyanov
,
T. J.
Pinguet
,
O.
Levi
,
L. A.
Eyres
,
J. S.
Harris
,
M. M.
Fejer
,
B.
Gerard
,
L.
Becouarn
, and
E.
Lallier
,
J. Appl. Phys.
94
,
6447
(
2003
).
15.
V. G.
Dmitriviev
,
G. G.
Gurzadyan
, and
D. N.
Nikogosyan
,
Handbook of Nonlinear Crystals
(
Springer
,
Berlin
,
1999
), p.
169
.
16.
A.
Yariv
,
Quantum Electronics
(
Wiley
,
New York
,
1989
), p.
378
.
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