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22 GHz Photodetectors Data Sheet

22 GHz Photodetectors

EOT’s 22 GHz (25 GHz typical) Photodetectors contain PIN photodiodes that utilize the photovoltaic effect to convert optical power into an electrical current.  When terminated into 50 Ω into an oscilloscope, the pulsewidth of a laser can be measured.  When terminated into 50 Ω into a spectrum analyzer, the frequency response of a laser can be measured.  EOT’s 22 GHz Photodetectors come with their own internal bias supply consisting of long life-lithium cells.  Plugging a coaxial cable into the photodetector’s SMA output connector and terminating into 50 Ω at the oscilloscope or spectrum analyzer is all that is required for operation.

Applications:

· Monitoring the output of ultrafast lasers

· Monitoring the output of mode-locked lasers

· High-frequency, heterodyne applications

· Time domain and frequency response measurements

Specificationsa,b:

Part No. (Model)
120-10140-0001
(ET-3600)
120-10142-0001
(ET-3600F)
Detector Material
InGaAs
InGaAs
Rise Time
16 ps
16 ps
Responsivityc
>0.70 A/W at 1300 nm
>0.70 A/W at 1300 nm
Power Supply
3 VDC
3 VDC
Bandwidth
>22 GHz
>22 GHz
Active Area Diameter 
20 µm
20 µm
Dark Current 
1 nA
1 nA
Acceptance Angle (1/2 angle)
15
N/A
Noise Equivalent Powerd
26 pW/√Hz at 1300 nm
26 pW/√Hz at 1300 nm
Maximum Linear CW Power
10 mW
10 mW
Mounting (Tapped Holes)
8-32 or M4
8-32 or M4
Output Connector
SMA
SMA
Fiber Optic Connection
N/A
FC/UPC, SMF28e

a Product specifications are subject to change.
b All specifications apply for a 50 Ω termination unless otherwise noted.
Photodetectors have an internal 50 Ω termination. Responsivity data applicable to diode only. Detector output should be determined based on 1/2 the responsivity of that shown on graph.
Noise Equivalent Power (NEP) is determined via open circuit output.
Note: All products are RoHS compliant.