MKS Ophir FPS-1 Quick Reference

6. Spectral Response
A graph of the approximate relative spectral response of the
FPS-1 is given below. This graph represents the sensitivity
without the additional filters.
FPS-1 spectral response without filters
0.5
0.45
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
200 300 400 500
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 1.0-4/23.Aug.20/be Ophir P/N 1J06055
600 700 800 900
Wavelength, nm
1000 1100 FPS-1
Fast Photodiode Detector
for Temporal Measurements
1 General Description
The FPS-1 fast photodetector is designed to measure the
temporal behavior of pulsed lasers. The FPS-1 has two
modes of operation:
a. High speed and low sensitivity into 50Ω load with 1ns
response time.
b. High sensitivity into 10KΩ with 3µs response time.
Additional filters can be purchased for the FPS-1 to
adjust the sensitivity to the power level of the source.
The FPS-1 comes with a stand and base and fiber
adapters are available for the sensor as well.
1. Getting Started
Connections:
The FPS-1 can operate either from its internal battery or
from the wall plug power supply. If you want to operate
the FPS-1 from the power supply, plug the power supply
into the socket marked 12VDC. Connect the output BNC
to your oscilloscope with either 50Ω or 10KΩ termination
resistance (see section 2).
To switch the battery on and off:
Switch the toggle switch marked "BAT" to "on".
To switch off, switch to "off". Note that this only switches
the battery. If the FPS-1 is powered from the wall cube,
it will not be switched off with this switch.
Battery check:
To check the battery status, press the small push button
marked "BAT. STATUS". If the green LED lights, the
battery is OK.