Sensitive Terahertz Detectors: Cooled Terahertz Detectors based on Hot Electron Bolometer (HEB)

Cooled Terahertz Detectors: Hot Electron Bolometers (HEB)

Cooled Terahertz (THz) Detector Type 2: Hot Electron Bolometer (HEB) Detector

Type of detector

2

Operating frequency range

0.3-3 THz

Noise Equivalent Power NEP

5-7*10^-14 W*HZ^-0.5

Response Time

1 ns

Maximum power handling capacity

50 uW

Upper level of the dynamic range (3dB compression point)

0.1 uW

Bandwidth of cold (LHe temp.) HEMT amplifier

100 kHz - 200 MHz

Total gain (including room temperature amplifying)

55-60 dB

Cold filter and window of the LHe cryostat

Black PEfiltering and HDPE window

Antenna type

12 mm Dia Silicon hyperhemi-spherical lens and log periodic spiral antenna

Superconducting material of the sensitive element

MoRe

 

Liquid helium Cryostat characteristics 

Type of cryostat
1
2
3
Volume of liquid helium
0.5 liters
0.8 liters
2.0 liters
liquid helium hold time
more than 5 hours
more than 5 hours
more than 5 hours
Input optical window diameter
12 mm
20 mm
40 mm
Weight
5 kg
6.5 kg
18 kg
Height
360 mm
380 mm
490 mm
Diameter

150 mm

160 mm

260 mm

Temperature on the cold plate
4.2 K
4.2 K
4.2 K
Output signal connector type
SMA-50 Ohm
SMA-50 Ohm
SMA-50 Ohm

 

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