By combining state of the art photodiodes with the proven and outstanding FEMTO LCA Current Amplifier technology we designed a new family of photoreceivers with a remarkable performance. The Femto LCA-S-400K is available with either a large area Si or InGaAs photodiode covering a spectral range from 400 to 1100 nm and 900 to 1700 nm, respectively. The amplifier transimpedance is 107 V/A resulting in a maximum conversion gain of 9.5 x 106 V/W at 1550 nm for the InGaAs model.
FEATURES
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Si PIN and InGaAs PIN photodiodes
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Wavelength range from 400 to 1700 nm
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Bandwidth from DC to 400 kHz
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Max. conversion gain 10^7 V/W
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Min. NEP 75 fW/√Hz
A NEW FAMILY OF PHOTORECEIVERS
Due to the low noise performance of the transimpedance amplifier the minimum NEP is as low as 75 fW/√Hz which allows for detection of optical signals in the nanoWatt range without further averaging.
APPLICATIONS
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Spectroscopy
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General purposes opto-electronic measurements
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Optical front-end for oscilloscopes, A/D converters and lock-in amplifiers
|
Model |
LCA-S-400K-SI |
LCA-S-400K-IN |
|
Photodiode |
3.0 mm Ø Si PIN |
0.5 mm Ø InGaAs PIN |
|
Spectral Range |
400 ... 1100 nm |
900 ... 1700 nm |
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Bandwidth (-3 dB) |
DC ... 400 kHz |
DC ... 400 kHz |
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Rise/Fall Time (10% - 90%) |
1 µs |
1 µs |
|
Transimpedance Gain |
1 x 107 V/A |
1 x 107 V/A |
|
Max. Conversion Gain |
6.2 x 106 V/W (@ 900 nm) |
9.5 x 106 V/W (@ 1550 nm) |
|
Min NEP (@ 10 kHz) |
130 fW/√Hz (@ 900 nm) |
75 fW/√Hz (@ 1550 nm) |
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Datasheet |
Output voltage ±10 V max (@ 1 MΩ load). Offset adjustable by trimpot. Units with fiber optic input or AC coupling are optionally available. 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.