Features
Specifically designed for time-resolved diagnostics of high speed optical detectors
simple to use with only a trigger input and synch output connector
Lens control allows the beam to be de-focused and spread across the detector area
a variable width control allows pulse widths from 40 ps up to 800 ps
Applications
- Time response of high speed photomultipliers
- Gating measurement of image intensifiers
Overview
The LPG Light Pulsed Generator is designed for time resolved diagnostics of photomultipliers and image intensifiers.
It can test both the time response of high speed photomultipliers and the gating speed of image intensifiers.
The LPG features a lens control which allows the beam to be de-focussed and spread across the detector area and a variable width control for pulse widths between 40 ps to 800 ps.
As standard the LPG is supplied with either a 405 or 650 nm laser, other wavelengths are available on request.
Specifications
LPG-405 | LPG-650 | |
Centre Wavelength | 405 nm | 650 nm |
Line Width | 3 nm | 3 nm |
Pulse Energy | 15 – 60 pJ | 8 – 100 pJ |
Pulse Width | 45 – 800 ps | 45 – 800 ps |
Repetition Rate | Single Shot – | Single Shot – |
Trigger-in to Pulse Jitter | 3 ps rms | 3 ps rms |
Sync-out to Pulse Jitter | 2 ps rms | 2 ps rms |
Laser Class | Class 1 | Class 1 |
Power Supply Voltage | +12 V | +12 V |
Current (max) | 110 mA | 125 mA |
Height x Width x Length | 54 x 61 x 149 mm | 54 x 61 x 149 mm |
Weight | 260 g | 260 g |
Optical Gating using LGP-405
The true optical gating of an image intensifier is observed by synchronising the LPG-405 laser pulse with the gate unit, then adjusting the relative delay and stepping the laser through the gate pulse. This result shows a LPG-405 laser pulse being stepped through a 4 ns gate window generated by a Photek GM200-3N gate unit on a Photek MCP118 image intensifier. Each step represents an extra 200 ps delay on the laser pulse.
