Compare Model Drawings, CAD & Specs Wavelength Range Availability Price
Femtowatt Photoreceiver, Silicon, 320-1050 nm, 1 mm Diameter, 8-32 / M4
In Stock
320-1050 nm
In Stock
InGaAs Photoreceiver, Femtowatt, 800-1700 nm, 1 mm Diameter, 8-32 / M4
3 Weeks
800-1700 nm
3 Weeks


  • Detector Diameter
    1.0 mm
  • Bandwidth (-3 dB)
    DC-750 Hz (DC), 30-750 Hz (AC)
  • Output Connector
    Male BNC
  • Output Impedance
    100 Ω
  • Power Requirements
    Internal 9-V battery


Amazing Amounts of Gain

These photoreceivers provide amazing amounts of gain (up to 2x1011 V/W) and yet are easy to use, making the most difficult spectroscopy or fluorescence experiment a snap. They’re powered by a single 9-V battery, and don’t require cooling or high-voltage power supplies. They’re sensitive from the UV all the way to the IR, giving you the flexibility to work wherever you get the most signal. Their 1-mm photodetector diameter even makes alignment easy.

Three Fixed Gain Settings

You can easily switch among the three fixed gain settings of 2x1011 (AC), 2x1010 (AC), and 2x1010 (DC) V/A. The two AC settings have a low-frequency roll-off at 30 Hz and eliminate DC drifts. To filter out unwanted background signals, you can also mount spike or band-pass filters directly on the photodetector with the filter-holder accessory.

Battery Powered for Low-noise Performance

The incredibly high-gain and low-noise performance of these photoreceivers is achieved by careful selection of the amplifier-resistor pair. A large feedback resistor provides the high-gain values, while an ultra quiet amplifier keeps noise to a minimum. Since the unit is battery powered, you’ll need only a single coaxial cable to connect the photodetector to other instruments. This eliminates ground loops, the most common source of noise. A non-conductive pad electrically isolates the case from the table, further eliminating noise pickup.