Design, optimization and development of pulse compression gratings for the MPW-HE LIL

Design and fabrication of an all-dielectric grating with top-hat high diffraction efficiency over a broad spectral range

“…The basic grating structure is represented in Figure 1. It comprises a multilayer mirror on a substrate and a dielectric multilayer with a corrugation in the top high index layer at the air side unlike in the state of the art where it is etched in a low index silica layer [7]. The diffraction is produced by the sole -1 st order in a contradirectional scheme away from the Littrow condition.…”

“…This has motivated the search for an alternative as from the beginning of the nineties as first suggested by Sychugov et al [4]. All-dielectric grating structures composed of a multilayer mirror and a corrugated superstructure have been developed in a number of laboratories [5,6], and have been shown to withstand a fluence larger than 1 J/cm 2 at 1050 nm wavelength [7]. The possibility to achieve 100% diffraction efficiency was shown to be related with the excitation of a leaky mode of the mirror-based diffractive superstructure [8].…”

High-efficiency wide-band metal-dielectric resonant grating for 20 fs pulse compression

“…Originally it was suggested to use an alldielectric structure composed of a multilayer mirror with a dielectric corrugation on top [4] as an alternative. This motivated further developments [5,6] which, in the midnineties, led to the demonstration of large dielectric gratings at 1050 nm wavelength capable of withstanding significantly higher flux [7]. Since around 2000 the company Jobin & Yvon have also developed commercial elements [8].…”