The dispersive device for the laser pulse compression device which uses planer type photo nick crystalline structure

摘要

Invention regards laser technology and huaibaoputeikusu. The dispersive device which is based on the planer type photo nick crystalline structure which was formed to high refractive index material layer is disclosed. In one execution form, planer type photo nick structure has the specified width of the plural books and the parallel groove which has depth, pulse is spread vertically to the groove, dispersive device length is decided in order to give the largest compression of phase modulation pulse. The periodic structure following 2nd execution form has 2 dimensional periodic structure which is shown in Figure 8, is equal to the periodic structural territory, mutually, is equal in the 1st hole 5 which forms the line and each other, phase modulation with the single mode operation which is the 2nd hole 6 which, forms the line which specified number adjoins as for size of the 1st hole unlike the size of the 2nd hole, as for size and the high refractive index material of the 1st and 2nd hole and refractive index of the baseplate parallels to the line of the 2nd hole in the above-mentioned structureIn order to give the guided propagation of pulse, it is decided, the dispersive device length in 2nd execution form is decided in order to give the largest compression of phase modulation pulse.