MKS Ophir FPD-IG-25 Quick Reference

6. Spectral Response
A graph of the approximate relative spectral response of the
FPD-IG-25 is given below. This graph represents the sensitivity
without the additional filters.
Spectral Response: FPD-IG-25
1.0
0.8
0.6
0.4
0.2
0.0
800 1000
Ophir Optronics Solutions LTD.
Science-Based Industrial Park P.O.B. 45021,
Jerusalem 9145001, Israel
Phone +972-2-5484444
https://www.ophiropt.com/photonics
rev 1.0-2/18.Jun.20/se Ophir P/N 1J06075
1200 1400 1600
Wavelength [nm]
FPD-IG-25
Fast Photodiode Detector
for Temporal Measurements
1 General Description
The FPD-IG-25 is a very fast indium gallium arsenide
photodiode detector for the NIR spectrum designed to
work with oscilloscopes and spectrum analyzers for
measuring the temporal characteristics of pulsed lasers. Its
rise and fall times are <25 picoseconds.
Optional input accessories provide for connecting optical
fibers or IS6 integrating spheres to the device's input.
Optional filter accessories enable attenuation of the optical
input signal.
All FPD detectors come with a stand and base. A nylon
standoff is included to allow for electrically insulating the
detector from the stand. This can be used in the event that
electrical noise is introduced through the base.
1. Getting Started
Connections:
The FPD-IG-25 operates from internal batteries. Connect
the output BNC to your oscilloscope or spectrum analyzer
via an input with 50Ω termination resistance. The coax
cable used should have an impedance of 50Ω and its
length should preferably be 1 m or less. Note: In order to
avoid premature battery drainage, the power switch should
be turned to OFF whenever the detector is not in use.