We measured laser emission from Be-doped Ge crystals with intercontact distances as small as 0.5 mm. An improved heat sink allowed a twofold increase of the laser duty cycle to 5%. We also report the measurements of THz emission from small Be-doped Ge crystals under continuous excitation with volumes as small as 0.5 mm3.

1.
H.
Linnartz
,
W. L.
Meerts
, and
M.
Havenith
,
Chem. Phys.
193
,
327
(
1995
).
2.
L. A.
Reichertz
,
O. D.
Dubon
,
G.
Sirmain
,
E.
Bründermann
,
W. L.
Hansen
,
D. R.
Chamberlin
,
A. M.
Linhart
,
H. P.
Röser
, and
E. E.
Haller
,
Phys. Rev. B
56
,
12069
(
1997
).
3.
I. V.
Altukhov
,
E. G.
Chirkova
,
M. S.
Kagan
,
K. A.
Korolev
,
V. P.
Sinis
, and
I. N.
Yassievich
,
Phys. Status Solidi B
198
,
35
(
1996
).
4.
Yu. P.
Gousev
,
I. V.
Altukhov
,
K. A.
Korolev
,
V. P.
Sinis
,
M. S.
Kagan
,
E. E.
Haller
,
M. A.
Odnoblyudov
,
I. N.
Yassievich
, and
K.-A.
Chao
,
Appl. Phys. Lett.
75
,
757
(
1999
).
5.
N.
Hiromoto
,
I.
Hosako
, and
M.
Fujiwara
,
Appl. Phys. Lett.
74
,
3432
(
1999
).
6.
M.
Rochat
,
J.
Faist
,
M.
Beck
,
U.
Oesterle
, and
M.
Ilegems
,
Appl. Phys. Lett.
73
,
3724
(
1998
).
7.
E.
Bründermann
,
A. M.
Linhart
,
L. A.
Reichertz
,
H. P.
Röser
,
O. D.
Dubon
,
G.
Sirmain
,
W. L.
Hansen
, and
E. E.
Haller
,
Appl. Phys. Lett.
68
,
3075
(
1996
).
8.
E. E. Haller and E. Bründermann, US Patent No. 6,011,810 (4 January 2000).
9.
E.
Bründermann
,
D. R.
Chamberlin
, and
E. E.
Haller
,
Appl. Phys. Lett.
73
,
2757
(
1998
).
10.
K.
Park
,
R. E.
Peale
,
H.
Weidner
, and
J. J.
Kim
,
IEEE J. Quantum Electron.
32
,
1203
(
1996
).
11.
E.
Bründermann
and
H. P.
Röser
,
Infrared Phys. Technol.
38
,
201
(
1997
).
12.
P. D.
Coleman
and
D. W.
Cronin
,
Int. J. Infrared Millim. Waves
18
,
1241
(
1997
).
13.
E.
Bründermann
,
D. R.
Chamberlin
, and
E. E.
Haller
,
Infrared Phys. Technol.
40
,
141
(
1999
).
14.
D. R.
Chamberlin
,
E.
Bründermann
, and
E. E.
Haller
,
Appl. Phys. Lett.
74
,
3761
(
1999
).
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