EOT’s Amplified Photodetectors contain PIN photodiodes that utilize the photovoltaic effect to convert optical power into an electrical current and a fixed gain transimpedance amplifier allowing measurement of <1 mW input powers.
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 Amplified Photodetectors come with their own wall plug-in power supply. Plugging a coaxial cable into the photodetector’s SMA or BNC output connector and terminating into 50 Ω at the oscilloscope or spectrum analyzer is all that is required for operation.
FEATURES
• Built-in transimpedance amplifier
• Small footprint
• Bandwidth up to 10 GHz
• External wall plug-in power supply
APPLICATIONS
• Monitoring high repetition rate, externally modulated CW lasers
• Viewing <1 mW laser powers
OPTIONS
• Detector Material
• Active Area
• Fiber-coupled or free space options available
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Specifications
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Part No. (Model)
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120-10013-
0001
(ET-2030A)1
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120-10036-
0001
(ET-3000A)1
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120-10060-
0001
(ET-3500A)1
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120-10064-
0001
(ET-3500AF)1
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120-10073-
0001
(ET-4000A)1
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120-10077-
0001
(ET-4000AF)1
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120-10115-
0001
(ET-5000A)¹
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120-10116-
0001
(ET-5000AF)¹
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Detector Material
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Silicon
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InGaAs
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InGaAs
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InGaAs
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GaAs
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GaAs
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InGaAs
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InGaAs
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Rise Time/Fall Time (ps)
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<50 / <500
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<40 / <400
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35 / 35
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35 / 35
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35 / 35
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35 / 35
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35 / 35
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35 /35
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Conversion Gain
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450 V/W
at 830 nm
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900 V/W at
at 1300 nm
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2250 V/W
at 1310 nm
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1620 V/W
at 1310 nm
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1340 V/W
at 850 nm
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970 V/W
at 850 nm
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3250 V/W
at 2000 nm
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2350 V/W
at 2000 nm
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Power Supply (VDC)
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24
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24
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5
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5
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5
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5
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5
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5
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Bandwidth
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30 kHz to
1.2 GHz
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30 kHz to
1.5 GHz
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20 kHz to
10 GHz
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20 kHz to
10 GHz
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20 kHz to
10 GHz
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20 kHz to
10 GHz
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20 kHz to
10 GHz
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20 kHz to
10 GHz
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Active Area Diameter (µm)
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400
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100
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32
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32
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60
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60
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40
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40
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Acceptance Angle
(1/2 angle)
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10°
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20°
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15°
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N/A
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15°
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N/A
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20°
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N/A
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Noise Equivalent Power²
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<60 pW/√Hz
at 830 nm
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<30 pW/√Hz
at 1300 nm
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25 pW/√Hz
at 1310 nm
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30 pW/√Hz
at 1310 nm
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35 pW/√Hz
at 850 nm
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50 pW/√Hz
at 850 nm
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20 pW/√Hz
at 2000nm
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25 pW/√Hz
at 2000 nm
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DC Monitor Output
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1 mV/µA
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1 mV/µA
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1 mV/µA
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1 mV/µA
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1 mV/µA
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1 mV/µA
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Maximum Linear Rating
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1.3 V peak
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1.3 V peak
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450 mVp-p
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450 mVp-p
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450 mVp-p
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450 mVp-p
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450 mVp-p
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450 mVp-p
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Mounting (Tapped Holes)
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8-32 or M4
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8-32 or M4
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8-32 or M4
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8-32 or M4
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8-32 or M4
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8-32 or M4
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8-32 or M4
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8-32 or M4
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Output Connector
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BNC
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BNC
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SMA
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SMA
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SMA
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SMA
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SMA
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SMA
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Fiber Optic Connection³
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N/A
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N/A
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N/A
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FC/UPC
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N/A
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FC/UPC
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N/A
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FC/UPC
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Notes:
1. AC coupled.
2. Noise Equivalent Power (NEP) is determined via short circuit output.
3. Multi-mode fiber available. May limit bandwidth.
4. NOTE: All specifications apply for a 50 Ω termination unless otherwise noted.
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