Abstract
The gases and laser-produced plasmas (LPP) are both suitable transparent media for high-order harmonic generation (HHG) in the extreme ultraviolet range from near infrared femtosecond laser pulses. In this work, we perform a comparison study of these media as the emitters of harmonics. We demonstrated stronger HHG from different plasmas (Ag, Ag2S, stainless steel) than the harmonics generated from argon gas, especially in the 20–50 nm wavelength range. Different schemes of HHG (single- and two-color pumps, tunable positions of LPP with regard to gas jet) are analyzed, which allowed us to determine the best configurations of separated LPP + gas and gas + LPP schemes for harmonic generation. A three- to twenty-fold increase of harmonic yields are found from LPP compared to the gas medium under similar experimental conditions.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
