Observation of sharp spatial variations of the R1 fluorescence of ruby at 5 K resonantly excited by a 1-MHz-linewidth scanning cw dye laser indicates the presence of gross macroscopic strain broadening in Czochralski and Verneuil crystals. The implications of these results in several current studies are discussed.
REFERENCES
1.
I. D.
Abella
, N. A.
Kurnitt
, and S. R.
Hartmann
, Phys. Rev.
141
, 391
(1966
).2.
R. G.
DeVoe
, A.
Szabo
, S. C.
Rand
, and R. G.
Brewer
, Phys. Rev. Lett.
42
, 1560
(1979
).3.
4.
5.
R. H. Silsbee, in Optical Properties of Solids, edited by S. Nudelman and S. S. Mitra (Plenum, New York, 1969), p. 607.
6.
7.
The term (gross) macroscopic broadening is used here in an obvious sense and is to be distinguished from that discussed in, e.g.,
P. F.
Liao
, L. M.
Humphrey
, D. M.
Bloom
, and S.
Geschwind
, Phys. Rev. B
20
, 4145
(1979
).8.
We use the term “intrinsic” when gross macroscopic broadening is absent. Operationally, this is the line shape we measure by fluorescence observations from a small volume within the crystal. Resonant excitation and viewing are at right angles with the observed volume located near a corner of the crystal to minimize excitation amplitude variation and reabsorption effects. See
P. E.
Jessop
and A.
Szabo
, Opt. Commun.
33
, 301
(1980
).9.
A. L. Schawlow, in Proceedings of the Third International Conference on Quantum Electronics, edited by P. Grivet and N. Bloembergen (Columbia University, New York, 1964), p. 655.
10.
L. Rotrock and P. Warren (private communication). The dislocation density can vary by over two orders of magnitude, e.g., over a Czochralski boule.
11.
12.
13.
14.
T. V.
Gvaladze
, B. N.
Grechushnikov
, P. T.
Sviridov
, and V. Ya.
Kaimov-Malkov
, Sov. Phys. Dokl.
20
, 430
(1975
).15.
16.
17.
T. N. C.
Venkatesan
and S. L.
McCall
, Rev. Sci. Instrum.
48
, 539
(1977
).18.
P. E.
Jessop
, T.
Muramoto
, and A.
Szabo
, Phys. Rev. B
21
, 926
(1980
);A. Szabo (unpublished).
19.
J.
Koo
, L. R.
Walker
, and S.
Geschwind
, Phys. Rev. Lett.
35
, 1669
(1975
).
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1980
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