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InGaAs Photodetectors Data Sheet

InGaAs Photodetectors

EOT’s InGaAs 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 InGaAs Photodetectors come with their own internal bias supply consisting of long-life lithium cells.  Plugging a coaxial cable into the photodetector’s BNC output connector and terminating into 50Ω at the oscilloscope or spectrum analyzer is all that is required for operation.

Applications:

· Monitoring the output of Q-switched lasers

· Monitoring the output of mode-locked lasers

· Monitoring the output of externally modulated CW lasers

· Time domain and frequency response measurements

Features:

· All InGaAs photodetectors can be ordered with optional wall plug-in power supply, except the ET-3020

· Available with optional FC or SMA input receptacle

Specificationsa:

Part No. (Model)
120-10034-0001b
(ET-3000)
120-10050-0001
(ET-3010)
120-10054-0001
(ET-3020)
120-10056-0001
(ET-3040)
Rise Time/Fall Time
<175ps/<175ps
<175ps/<175ps
<6ns/<250ps
<1.25ns/<3.70ns
Responsivity at 1300nm 
0.9A/W
0.85A/Wc
0.9A/W
0.9A/W
Power Supply
6VDC
6VDC
Non-biasedd
3VDC
Bandwidth
>2GHz
>1.5GHz
>2.5MHz
>50MHz
Active Area Diameter
100μm
100μm
3.0mm
1.0mm
Dark Current
<2.0nA
<1.0nA
N/A
<10nA
Acceptance Angle (1/2 angle)
20⁰
NA
50⁰
50⁰
Noise Equivalent Power
<0.03pW/√Hz
<0.02pW/√Hz
5pW/√Hz
<0.06pW/√Hz
Maximum Linear Rating
CW current: 5mA
CW current: 5mA
CW current: 5mA
CW current: 5mA
Mounting (Tapped Holes)
8-32 or M4
8-32 or M4
8-32 or M4
8-32 or M4
Output Connector
BNC
BNC
BNC
BNC

Product specifications are subject to change.
FC not available
Measured with 50μm, 0.2NA GI fiber
Operates in photovoltaic mode
Note: All products are RoHS compliant.