By combining state of the art photodiodes with the proven and outstanding FEMTO GHz amplifier technology we designed a new family of photoreceivers with a remarkable performance. The Femto HSPR-X and HSA-X-S offer an upper bandwidth limit of 2 GHz. Two models with either a fast Si-PIN or InGaAs-PIN photodiode cover a spectral range from 320 to 1000 nm and 900 to 1700 nm, respectively. Due to the sophisticated amplifier design the minimum NEP is just 11 pW/√Hz at a transimpedance of 5 x 103 V/A. This allows for the measurement of optical power levels in the µW range with GHz speed.
FEATURES
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Si-PIN and InGaAs-PIN photodiodes
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Wavelength range from 320 to 1700 nm
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Ultra-wide bandwidth from 10 kHz up to 2 GHz
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Max. conversion gain 4.75 x 10^3 V/W
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Min. NEP 11 pW/√Hz
GHZ TECHNOLOGY
APPLICATIONS
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Spectroscopy
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Fast pulse and transient measurements
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Optical triggering
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Optical front-end (O/E converter) for oscilloscopes and A/D converters
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Model |
HSA-X-S-1G4-SI |
HSPR-X-I-1G4-SI inverting |
HSA-X-S-2G-IN |
HSPR-X-I-2G-IN inverting |
|
Photodiode |
Ø 0.4 mm Si-PIN |
Ø 0.4 mm Si-PIN |
Ø 0.1 mm InGaAs-PIN |
Ø 0.1 mm InGaAs-PIN |
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Spectral Range |
320 ... 1000 nm |
320 ... 1000 nm |
900 ... 1700 nm |
900 ... 1700 nm |
|
Bandwidth (−3 dB) |
10 kHz ... 1.4 GHz |
10 kHz ... 1.4 GHz |
10 kHz ... 2 GHz |
10 kHz ... 2 GHz |
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Rise/Fall Time (10 % - 90 %) |
250 ps |
250 ps |
180 ps |
180 ps |
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Transimpedance Gain |
5 x 103 V/A |
5 x 103 V/A inverting |
5 x 103 V/A |
5 x 103 V/A inverting |
|
Conversion Gain |
2.55 x 103 V/W (@ 760 nm) |
2.55 x 103 V/W (@ 760 nm) |
4.75 x 103 V/W (@ 1550 nm) |
4.75 x 103 V/W (@ 1550 nm) |
|
NEP (@ 100 MHz) |
32 pW/√Hz (@ 760 nm) |
19 pW/√Hz (@ 760 nm) |
16 pW/√Hz (@ 1550 nm) |
11 pW/√Hz (@ 1550 nm) |
|
Output VSWR |
2.5 : 1 |
1.4 : 1 |
2.5 : 1 |
1.4 : 1 |
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Maximum Output Voltage @ 50 Ω |
1.9 VPP |
2.0 VPP |
1.9 VPP |
2.0 VPP |
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Output Noise |
3.6 mVRMS |
2.5 mVRMS |
3.6 mVRMS |
2.5 mVRMS |
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Available Input Options |
Free space (FS) or FC |
Free space (FS) or FC |
Free space (FS) or FC |
Free space (FS) or FC |
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Datasheet |
Output short-circuit protected. Threaded M4 and 8-32 mounting holes for use with standard mounting posts. Power supply +15 V via 3-pin Lemo® socket. A mating connector is provided with the device. Optional power supply PS-15 available. For further information please view the datasheet or contact FEMTO.