A method for the detection of ultrasonic vibrations using the apertureless near-field scanning optical microscope (ANSOM) is presented. Due to the changes in tip-sample separation, ultrasonic vibrations are seen as perturbations on the near-field signal. Both contact transducer (5 MHz) and laser-generated ultrasound have been successfully transduced. The linear dependence of the near-field signal on tip-sample separation makes the interpretation of these wave forms similar to that for conventional ultrasonic techniques.

1.
C. B. Scruby and L. E. Drain, Laser Ultrasonics: Techniques and Applications (Hilger, New York, 1990).
2.
A.
Moreau
and
J.
Ketterson
,
J. Appl. Phys.
72
,
861
(
1992
).
3.
T.
Hesjedal
,
E.
Chilla
, and
H.
Fröhlich
,
Appl. Phys. Lett.
69
,
354
(
1996
).
4.
O.
Kolosov
and
K.
Yamanaka
,
Jpn. J. Appl. Phys., Part 1
32
,
1095
(
1993
).
5.
M. Paesler and P. Moyer, Near-Field Optics: Theory, Instrumentation, and Applications (Wiley, New York, 1996).
6.
F.
Zenhausern
,
M. P.
O’Boyle
, and
H. K.
Wickramasinghe
,
Appl. Phys. Lett.
65
,
1623
(
1994
).
7.
F.
Zenhausern
,
Y.
Martin
, and
H. K.
Wickramasinghe
,
Science
269
,
1083
(
1995
).
8.
R.
Bachelot
,
P.
Gleyzes
, and
A. C.
Boccara
,
Appl. Opt.
36
,
2160
(
1997
).
9.
G.
Wurtz
,
R.
Bachelot
, and
P.
Royer
,
Rev. Sci. Instrum.
69
,
1735
(
1998
).
10.
D. W. Blodgett, Ph. D. Dissertation, The Johns Hopkins University, 1998.
11.
A. J.
Melmed
,
J. Vac. Sci. Technol. B
9
,
601
(
1991
).
12.
F. F.
Froehlich
and
T. D.
Milster
,
Appl. Opt.
34
,
7273
(
1995
).
13.
J. B. Spicer and J. W. Wagner, in Acousto-Optics and Acoustic Microscopy, edited by S. M. Gracewski and T. Kundu, ASME AMD, Vol. 140 (American Society of Mechanical Engineers, New York, 1992), pp. 163–179.
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