BEGIN:VCALENDAR VERSION:2.0 PRODID:-//linuxsoftware.nz//NONSGML Joyous v1.4//EN BEGIN:VEVENT SUMMARY:Advanced Imaging with Extreme Ultraviolet and Soft X-rays DTSTART:20221216T090000Z DTEND:20221216T110000Z DTSTAMP:20260706T140903Z UID:f16e9a24-ddcd-482b-a4f7-70cfd628898e SEQUENCE:2 CREATED:20221213T110918Z DESCRIPTION:Abstract:Extreme Ultraviolet radiation (EUV) from high harmoni c generation (HHG) results in ultrashort coherent pulses of 10'\;s nm wavelength. Their duration\, down to the attosecond range\, allows probing ultrafast processes\, while their degree of coherence at short wavelength allows coherent diffractive imaging techniques to be implemented with res olutions reaching the wavelength range. However\, due to low reflectivity and being highly absorbed by most materials\, there'\;s still the need to improve EUV imaging methods.In this work\, we explored novel EUV HHG I maging techniques\, including the characterization of Lithium Fluoride det ectors\, generation of vortex beams and imaging with Spiral Zone Plates\, a very promising phase contrast method. LAST-MODIFIED:20221213T111044Z LOCATION:Sala de Seminários do DF\, Pavilhão de Física\, 2º piso URL:http://df.vps.tecnico.ulisboa.pt/pt/eventos/advanced-imaging-with-extr eme-ultraviolet-and-soft-x-rays/ X-ALT-DESC;FMTTYPE=text/html:

Abstract:
Extreme Ultraviolet radiation (EUV) from high harmonic generation (HHG) results in ultrashort coherent pulses of 10'\;s nm wavelength. Their d uration\, down to the attosecond range\, allows probing ultrafast processe s\, while their degree of coherence at short wavelength allows coherent di ffractive imaging techniques to be implemented with resolutions reaching t he wavelength range. However\, due to low reflectivity and being highly ab sorbed by most materials\, there'\;s still the need to improve EUV ima ging methods.

In this work\, we explored novel EUV HHG Imaging te chniques\, including the characterization of Lithium Fluoride detectors\, generation of vortex beams and imaging with Spiral Zone Plates\, a very pr omising phase contrast method.

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