DiPOLE is the first Diode pumped solid state laser (DPSSL) system based on the DiPOLE concept (should this be an embedded link). Initially conceived as a prototype to prove the DiPOLE concept, it has since become a useful test bed for continued research and development for the next generation systems. Currently DiPOLE has the following features which are of interest to future systems;
Ability to easily generate and modify temporal pulse shapes
Automatic beam alignment system
An Adaptive optic system
The amplifier head contains 4 laser gain medium disks which at ytterbium doped Yttrium-Aluminium-Garnet (Yb-YAG) ceramic. These disks are pumped from both sides by diode lasers and are cooled using a flow of helium gas which is cooled by liquid nitrogen.
Work has recently started to enable the DiPOLE beam to be transported into a second laboratory to extend current capabilities including an investigation into laser shock peening.
Pulse energy 10J
Pulse duration variable between 2 and 10 ns
Repetition rate 10 Hz
Output beam size 18 x 18mm
Optical to Optical efficiency 25%