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22GHz Photodetectors Data Sheet

22GHz Photodetectors

EOT’s 22GHz (25GHz typical) Photodetectors contain PIN photodiodes that utilize the photovoltaic effect to convert optical power into an electrical current.  When terminated into 50Ω into an oscilloscope, the pulsewidth of a laser can be measured.  When terminated into 50Ω into a spectrum analyzer, the frequency response of a laser can be measured.  EOT’s 22GHz 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 50Ω 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/Fall Time
16ps/16ps
16ps/16ps
Responsivityc
>0.70A/W at 1300nm
>0.70A/W at 1300nm
Power Supply
3VDC
3VDC
Bandwidth
>22GHz
>22GHz
Active Area Diameter 
20µm
20µm
Dark Current 
<1nA
<1nA
Acceptance Angle (1/2 angle)
15
N/A
Noise Equivalent Powerd
26pW/√Hz at 1300nm
26pW/√Hz at 1300nm
Maximum Linear CW Power
10mW
10mW
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 50Ω termination unless otherwise noted.
Photodetectors have an internal 50Ω 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.