Strong enhancement and extinction of single harmonic intensity in the mid- and end-plateau regions of the high harmonics generated in weakly excited laser plasmas
R. A. GaneevAkadempribor Scientific Association, Akademgorodok, Tashkent, Uzbekistan. [email protected]P. A. NaikRaja Ramanna Centre for Advanced TechnologyH. SinghalRaja Ramanna Centre for Advanced TechnologyJ. A. ChakeraRaja Ramanna Centre for Advanced TechnologyParshotam Dass GuptaRaja Ramanna Centre for Advanced Technology
ABI
Аннотация
Strong intensity enhancement or extinction of some single harmonics is observed in high-harmonic generation from 48 fs Ti:sapphire laser pulses propagating through preformed low-excited laser-produced plasmas of various materials (GaAs, Cr, InSb, stainless steel). The intensities of some of the harmonics in the mid- and end-plateau regions vary from ~23-fold enhancement to near disappearance compared with those of the neighboring ones. It is also shown that the observed intensity enhancement (or extinction) can be varied by controlling the chirp of the driving laser radiation.
Мавзулар
Идентификаторлар
Иқтибослар ва манбалар
Кўрсаткичлар — AkademScholar · Тез орада