ABSTRACT
Variations on the multi-pulse stacker device were then developed which could be configured to produce a range of optical pulses, a layout of such a device is shown in figure 3. These devices are generally used at beam apertures up to 25 mm. They have the advantage that they can have <50% insertion loss, be able to generate pre-pulses with zero picoseconds delay, can be easily adjusted to provide different delays and are easy to align. These developments proved invaluable in the development of the Germanium Xray laser at 19.6 nm where optimised multi-pulse irradiation to target improved the X-ray laser output by four orders of magnitude [4].
