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Double-configuration grating monochromator for extreme-ultraviolet ultrafast pulses

We designed a double-configuration grating monochromator for the spectral selection of extreme-ultraviolet pulses produced by the CITIUS source. The system can work in two configurations: the offplane geometry which preserves the time structure of the pulse or the classical gemoetry which provides high wavelength resolution. L. Poletto et al., doi.org/10.1364/AO.53.005879

 

We present the design and characterization of a double-configuration grating monochromator for the spectral selection of extreme-ultraviolet ultrafast pulses. Two grating geometries are joined in an instrument with two interchangeable diffracting stages, both used at grazing incidence: one with the gratings in the off-plane mount (OPM), the other in the classical diffraction mount (CDM).

The use of two stages gives great flexibility: the OPM stage is used for sub-50 fs time response and low spectral resolution, while the CDM stage is for 100–200 fs time response and high spectral resolution. The monochromator spectral and temporal performances have been experimentally demonstrated on a high-order laser-harmonics beam line.

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Double-configuration grating monochromator for extreme-ultraviolet ultrafast pulses, L. Poletto et al., doi.org/10.1364/AO.53.005879
 
Last Updated on Friday, 23 June 2017 14:34