So-called “plasma mirrors” are very efficient in order to improve the temporal contrast of your laser pulse. There are basically composed of optically-polished, AR-coated glass slabs that let prepulse go through while reflecting the peak part of the laser pulse when it triggers the formation of plasma on the slab surface. The usual temporal contrast increase is 100-fold. It can be increased to 10,000 by using two plasma mirrors in series.

Plasma mirrors can be implemented in between the compression stage of the laser pulse, and the target chamber, in a confocal setup.

Another possibility, illustrated below, is to insert the high-temporal constrast shaper in an intermediate field before focus. This doesn’t require any change in the laser path or setup prior to reaching the target chamber, and fits in a very compact setup.

We can provide such compact setups, with one or two plasma mirrors at the wavelength adapted for your system, and including alignment systems.