TERAHERTZ HOT ELECTRON BOLOMETER (HEB)
- Response time as low
as 50 picoseconds.
- Possibility for
different beam geometry, beam pattern F/3 to F/infinity (collimated beam).
- Registration of short
pulses (THz pulses from nanoseconds to picosecond).
- Ultra-high sensitivity,
NEP as low as 5 x 10-14 W*√Hz.
|
Type of detector |
1 |
2 |
3 |
4 |
5 |
6 |
|
Operating
frequency range |
0.3-3
THz |
0.3-3
THz |
1-12
THz |
1-12
THz |
25-70
THz |
25-70
THz |
|
Noise
Equivalent Power NEP |
3-5*10^-13
W*HZ^-0.5 |
5-7*10^-14
W*HZ^-0.5 |
<6
-8 *10^-11 W*Hz^-0.5 |
<1
-2 * 10^-11 W * Hz^-0.5 |
4-5*10^-12
W*HZ^-0.5 |
1-2*10^-12
W*HZ^-0.5 |
|
Response
Time |
50 ps |
1
ns |
0.1ns |
1
ns |
50 ps |
1
ns |
|
Maximum
power handling capacity |
50 uW |
50 uW |
10 mW |
10 mW |
1 mW |
1 mW |
|
Upper
level of the dynamic range (3dB compression point) |
0.1
uW |
0.1
uW |
50 uW |
50 uW |
2 uW |
2 uW |
|
Responsivity,
V/W |
approx. 3,000 |
approx. 10,000 |
approx. 100 |
approx. 300 |
approx. 500 |
approx. 2,000 |
|
Bandwidth
of cold (LHe temp.) HEMT amplifier |
1
MHz - 3.5 GHz |
10
kHz - 200 MHz |
1
MHz - 3.5 GHz |
10
kHz - 200 MHz |
1
MHz - 3.5 GHz |
10
kHz - 200 MHz |
|
Total
gain (including room temperature amplifying) |
55-60
dB |
55-60
dB |
55-60
dB |
55-60
dB |
55-60
dB |
55-60
dB |
|
Cold
filter and window of the LHe cryostat |
Black PEfiltering and HDPE window |
Black PEfiltering and HDPE window |
Black PEfiltering and HDPE window |
Black PEfiltering and HDPE window |
High
Resistivity Germanium window |
High
Resistivity Germanium window |
|
Antenna
type |
12
mm Diameter Silicon hyperhemi-spherical lens
and log periodic spiral antenna |
12
mm Diameter Silicon hyperhemi-spherical lens
and log periodic spiral antenna |
12
mm or 4mm Diameter Silicon hyperhemi-spherical
lens |
12
mm or 4mm Diameter Silicon hyperhemi-spherical
lens |
12
mm Dia Germanium hyperhemi-spherical
lens |
12
mm Dia Germanium hyperhemi-spherical
lens |
|
Input beam,
Max. Diameter |
10 mm |
10 mm |
10
mm (3 mm) |
10 mm (3 mm) |
10 mm |
10 mm |
|
Input beam,
Beam Pattern |
F/3 to
F/infinity (collimated beam) |
F/3 to
F/infinity (collimated beam) |
F/3 to
F/infinity (collimated beam) |
F/3 to
F/infinity (collimated beam) |
F/3 to
F/infinity (collimated beam) |
F/3 to
F/infinity (collimated beam) |
|
Superconducting
material of the sensitive element |
NbN |
MoRe |
NbN |
MoRe |
NbN |
MoRe |