The authors report on a terahertz (600GHz) mixing experiment with MgB2 microbolometers in the resistive state. The authors observed that for a 20nm film a mixer gain bandwidth of 2.3GHz can be achieved, corresponding to an energy relaxation time of 70ps. The experimental results were analyzed using a two-temperature model. As a result, the phonon escape time of 20ps was deduced. At 1.6THz the MgB2 mixer uncorrected noise temperature was 11000K. The obtained results show that MgB2 bolometers are good prospects for the terahertz range as both broadband mixers and fast direct detectors.

1.
E. M.
Gershenzon
,
G. N.
Gol’tsman
,
I. G.
Gogidze
,
Y. P.
Gousev
,
A. I.
Elant’ev
,
B. S.
Karasik
, and
A. D.
Semenov
,
Supercond., Phys. Chem. Technol.
3
,
1582
(
1990
).
2.
S.
Cherednichenko
,
M.
Kroug
,
P.
Khosropanah
,
A.
Adam
,
H.
Merkel
,
E.
Kollberg
,
D.
Loudkov
,
B.
Voronov
,
G.
Gol’tsman
,
H.-W.
Huebers
, and
H.
Richter
,
Physica C
372
,
427
(
2002
).
3.
M.
Kroug
,
S.
Cherednichenko
,
H.
Merkel
,
E.
Kollberg
,
B.
Voronov
,
G.
Gol’tsman
,
H.-W.
Huebers
, and
H.
Richter
,
IEEE Trans. Appl. Supercond.
11
,
962
(
2001
).
4.
Y.
Gousev
,
G.
Goltsman
,
A.
Semenov
, and
E.
Gershenzon
,
J. Appl. Phys.
75
,
3695
(
1994
).
5.
S.
Cherednichenko
,
P.
Yagoubov
,
K.
Il’in
,
G.
Gol’tsman
, and
E.
Gershenzon
, in
Proceedings of the Eighth International Symposium on Space Terahertz Technology
,
Boston, MA
, 1997, edited by
R.
Blundell
and
E.
Tong
(
Harvard University
,
Cambridge, MA
,
1997
), p.
245
.
6.
M.
Hajenius
,
J. J. A.
Baselmans
,
A.
Baryshev
,
J. R.
Gao
,
T. M.
Klapwijk
,
J. W.
Kooi
,
W.
Jellema
, and
Z. Q.
Yang
,
J. Appl. Phys.
100
,
074507
(
2006
).
7.
A. D.
Semenov
,
K.
Il’in
,
M.
Siegel
,
A.
Smirnov
,
S.
Pavlov
,
H.
Richter
, and
H.-W.
Hübers
,
Supercond. Sci. Technol.
19
,
1051
(
2006
).
8.
P. J.
Burke
,
R. J.
Schoelkopf
,
D. E.
Prober
,
A.
Skalare
,
W. R.
McGrath
,
B.
Bumble
, and
H. G.
LeDuc
,
Appl. Phys. Lett.
68
,
3344
(
1996
).
9.
D. E.
Prober
,
Appl. Phys. Lett.
62
,
2119
(
1993
).
10.
Y.
Xu
,
M.
Khafizov
,
L.
Satrapiskiy
,
P.
Kùš
,
A.
Plecenik
, and
R.
Sobolewski
,
Phys. Rev. Lett.
91
,
197004
(
2003
).
11.
K.
Ueda
and
M.
Naito
,
J. Appl. Phys.
93
,
2113
(
2003
).
12.
H.
Ekström
,
B. S.
Karasik
,
E.
Kollberg
, and
K. S.
Yngvesson
,
IEEE Trans. Microwave Theory Tech.
43
,
938
(
1995
).
13.

Air loss, 0.6dB; vacuum window, 0.7dB; IR filter (at 77K), 0.3dB; IR filter (at 10K), 0.3dB.

14.
N.
Perrin
and
C.
Vanneste
,
Phys. Rev. B
28
,
5150
(
1983
).
15.
F.-Y.
Li
,
R.-J.
Wang
,
S.-C.
Li
,
L.-C.
Chen
,
J.-L.
Zhu
,
Z.-X.
Liu
,
R.-C.
Yu
, and
C.-Q.
Jin
,
Phys. Rev. B
65
,
132517
(
2002
);
Ch.
Wälti
,
E.
Felder
,
C.
Degen
,
G.
Wigger
,
R.
Monnier
,
B.
Delley
, and
H. R.
Ott
,
Phys. Rev. B
64
,
172515
(
2001
).
16.
A. V.
Sergeev
,
A. D.
Semenov
,
P.
Kouminov
,
V.
Trifonov
,
I. G.
Goghidze
,
B. S.
Karasik
,
G. N.
Gol’tsman
, and
E. M.
Gershenzon
,
Phys. Rev. B
49
,
9091
(
1994
).
17.
S.
Kaplan
,
J. Low Temp. Phys.
37
,
343
(
1979
).
18.
R. J.
Stoner
and
H. J.
Maris
,
Phys. Rev. B
48
,
16373
(
1993
).
19.
B. B.
Jin
,
P.
Kuzel
,
F.
Kadlec
,
T.
Dahm
,
J. M.
Redwing
,
A. V.
Pogrebnyakov
,
X. X.
Xi
, and
N.
Klein
,
Appl. Phys. Lett.
87
,
092503
(
2005
).
20.
A. D.
Semenov
,
R. S.
Nebosis
,
Yu. P.
Gousev
,
M. A.
Heusinger
, and
K. F.
Renk
,
Phys. Rev. B
52
,
581
(
1995
);
21.
A. R.
Oganov
and
P. I.
Dorogokupets
,
Phys. Rev. B
67
,
224110
(
2003
).
You do not currently have access to this content.