The FPD-IG-25 is a fast optical probe designed for visualizing and measuring the temporal characteristics of laser beams within the spectral range of 900 nm to 1700 nm. It incorporates an InGaAs PIN photodiode, engineered to convert optical signals into electrical signals, which can then be measured using third-party instruments such as oscilloscopes or spectrum analyzers. The FPD-IG-25 features a rise time of 25 psec and is powered by an internal battery that supplies the reverse bias voltage.

Detector Type: InGaAs
Rise/Fall Time: <0.025 nsec
Spectral Range: 900-1700 nm
Active Area Diameter: 0.032 mm
Noise Equivalent Power: 20 pW/√Hz
Dimensions: 54 L x 34 W x 40 D (mm)
Detector Area: 0.00080 mm2
Peak Sensitivity Wavelength: 1500 nm
Responsivity at Peak Wavelength: 0.95 A/W
Responsivity (Irradiance) at Peak Wavelength: 0.19 x 10?3 V/(W/cm2)
Bias Voltage: 6 VDC
Bias Voltage Source: Battery
Bandwidth: >15 GHz
Dark Current: <3 nA
Maximum Average Input Power: 10 mW
Mounting (Threaded Holes): 8-32 & M4
Output Connector: SMA
Attachment Thread: M20x1