FEMTO® manufactures a unique range of amplifier modules: Compact sized high-tech electronics for highly demanding scientists. These include current amplifiers, voltage amplifiers, lock-in amplifiers, photoreceivers and more. The innovative amplifiers are designed for instant use in scientific and industrial applications. The noise performance and the frequency response are outstanding.
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Featured products:
Femto Variable Gain High Speed Current Amplifier DHPCA-100
FEMTO Messtechnik GmbH offers the variable gain transimpedance amplifier DHPCA-100 for amplifying photo currents of fast photodiodes. It offers a maximum bandwidth of 200 MHz equivalent to a signal rise time of 1.8 ns.
The gain is adjustable from 102 to 108 V/A allowing the measurement of currents in the sub-nano to milli-Ampere range. An adjustable bias voltage is provided for biasing photodiodes. The integrated offset control is useful for adjusting the baseline or compensating photodiode dark currents.
The device offers many additional features like signal filters, switchable AC/DC coupling and an integrated digital interface for remote control. The compact amplifier housing offers excellent EMI shielding and allows the use directly at the source before the signal gets degraded by long cables or interfering equipment.
The DHPCA-100 is the ideal tool for amplifying small currents generated by high impedance sources, such as photodiodes or ionization detectors. Typical applications include spectroscopy, laser physics, particle detection, and general lab use.
Further details available here.
Femto 200 MHz Variable Gain Photoreceiver Series OE-300
The new high-speed photoreceiver OE-300 with variable transimpedance gain from 102 to 108 V/A offers an exceptionally wide application range. Various models equipped with InGaAs or Si photodiodes cover the 320 to 1,700 nm wavelength range.
The OE-300 photoreceiver series consists of a premium quality photodiode followed by a high-end, variable gain transimpedance amplifier. The low noise performance (NEP) is outstanding and the relatively large sized detectors make optical alignment easy.
The switchable gain from 102 to 108 V/A (decade increments) allows precise and reliable measurements within a very wide dynamic range from nanowatts up to 10 milliwatts optical power.
Compatibility with standard optical accessories like tubes and lenses is guaranteed by the selectable free space input options 1.035"-40 threaded and 25 mm unthreaded flange. Optical fiber input is supported via easy-to-mount fiber adapters (FC, FSMA) for the Si models whereas the InGaAs types offer the choice between optical free space and fixed FC fiber optic input.
For use with optical bench/breadboard/table systems all the OE-300 models can be easily mounted to standard M4 and 8-32 UNC threaded optical post holders via the optionally available post holder adapter type PRA-PAP.
Further details available here.