Post holder and post not included
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 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.
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.
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 |
Bandwidth (-3 dB) | DC ... 400 kHz | DC ... 400 kHz |
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) |
Datasheet |
191 kB | 176 kB |
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.
All FEMTO photoreceivers offered with FS input (round flange with 25 mm diameter) are now also available with 1.035″-40 threaded flange (FST) input – for even more flexibility on the optical bench!
The new picowatt photoreceiver series PWPR-2K with switchable gain (109 V/A, 1010 V/A) and a bandwidth from DC to 2 kHz is the perfect choice for cw-measurements, time resolved signal acquisitions and highly sensitive modulated measurements.
FEMTO® Messtechnik GmbH
Klosterstraße 64
10179 Berlin
Germany
Phone: +49-(0)30-280 4711-0
Fax: +49-(0)30-280 4711-11
Email: info@femto.de
© FEMTO 2019