Download TeraTech 2005 - Virginia Diodes, Inc.

Quasi-Optical Detector
•
Frequency Range 1001000 GHz
–
Silicon Lens
•
Performance expected
to ~2 THz
Responsivity 500 V/W
typical
–
NEP ~ 10 pW/rtHz
•
Antenna directivity 2535 dB nom.
•
Sub-ns response time
QOD Responsivity Testing
•
Use lens to fully couple source
power to detector
•
•
Responsivity (V/W)
Quasi-Optical Broadband Detectors
Focusing
Mirror
1200
See next page for THz measurement…
1000
800
600
400
200
0
100
200
300
400
Frequency (GHz)
500
Detector
Allows direct measurement
of detector responsivity
Waveguide coupler used to
measure transmitted power
www.vadiodes.com
Source
1
5/23/2017
Focusing
Mirror
600-900 GHz QOD Testing
Quasi-Optical Detector
Voltage (mV)
Removable
mounting plate
10
1
0.1
0.01
600
700
800
Frequency (GHz)
QOD B1-04
Photo of 600-900 GHz Testing
•
Source
•
QOD
•
www.vadiodes.com
WR-1.2ZBD B70
The measured QOD response is comparable or
higher than the waveguide ZBD in the 600-900
GHz band
•
1” b/n Tx &
Detector
900
ZBD responsivity 500-1500 V/W over WR1.2 band
QOD and ZBD measured using identical test
setup
•
Horn to horn coupling (1” distance) with
no lens
•
Provides a relative measurement of two
detectors
Excellent responsivity to > 1 THz
2
5/23/2017