It is well known that blazed optical diffraction gratings can significantly increase the diffraction efficiency of plane waves for a selected angle of incidence. We show that by combining blazing with a phononic band gap, diffraction efficiency approaching 100% can be achieved for acoustic waves. We obtain experimentally 98% diffraction efficiency with a two-dimensional phononic crystal of rotated steel rods of square cross-section immersed in water. This result opens the way toward the design of efficient phononic crystal gratings.

1.
A.
Wirgin
and
R.
Deleuil
,
J. Opt. Soc. Am.
59
,
1348
(
1969
).
2.
E.
Popov
,
B.
Bozhkov
, and
M.
Nevière
,
Appl. Opt.
40
,
2417
(
2001
).
3.
J.
Christensen
,
A. I.
Fernandez-Dominguez
,
F.
de Leon-Perez
,
L.
Martin-Moreno
, and
F. J.
Garcia-Vidal
,
Nat. Phys.
3
,
851
(
2007
).
4.
H.
Estrada
,
P.
Candelas
,
A.
Uris
,
F.
Belmar
,
F. J.
García de Abajo
, and
F.
Meseguer
,
Phys. Rev. Lett.
101
,
084302
(
2008
).
5.
E.
Yablonovitch
,
Phys. Rev. Lett.
58
,
2059
(
1987
).
6.
M. S.
Kushwaha
,
P.
Halevi
,
L.
Dobrzynski
, and
B.
Djafari-Rouhani
,
Phys. Rev. Lett.
71
,
2022
(
1993
).
7.
V.
Laude
,
Y.
Achaoui
,
S.
Benchabane
, and
A.
Khelif
,
Phys. Rev. B
80
,
092301
(
2009
).
8.
X.-Z.
Zhou
,
Y.-S.
Wang
, and
C.
Zhang
,
J. Appl. Phys.
106
,
014903
(
2009
).
9.
C. M.
Reinke
,
M. F.
Su
,
R. H.
Olsson
 III
, and
I.
El-Kady
,
Appl. Phys. Lett.
98
,
061912
(
2011
).
10.
R. P.
Moiseyenko
,
S.
Herbison
,
N. F.
Declercq
, and
V.
Laude
,
J. Appl. Phys.
111
,
034907
(
2012
).
11.
C.
Goffaux
and
J. P.
Vigneron
,
Phys. Rev. B
64
,
075118
(
2001
).
12.
F.
Wu
,
Z.
Liu
, and
Y.
Liu
,
Phys. Rev. E
66
,
046628
(
2002
).
13.
Z.
Hou
,
X.
Fu
, and
Y.
Liu
,
Phys. Lett. A
317
,
127
134
(
2003
).
14.
H.
Dong
,
F.
Wu
,
H.
Zhong
,
X.
Zhang
, and
Y.
Yao
,
J. Phys. D: Appl. Phys.
43
,
105404
(
2010
).
15.
X.-F.
Li
,
X.
Ni
,
L.
Feng
,
M.-H.
Lu
,
C.
He
, and
Y.-F.
Chen
,
Phys. Rev. Lett.
106
,
084301
(
2011
).
16.
Y.
Yao
,
Z.
Hou
, and
Y.
Liu
,
Phys. Lett. A
362
,
494
499
(
2007
).
17.
V.
Laude
,
R. P.
Moiseyenko
,
S.
Benchabane
, and
N. F.
Declercq
,
AIP Adv.
1
,
041402
(
2011
).
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