Harmonic generation from indium-rich plasmas
R. A. GaneevAkadempribor Scientific Association, Academy of Sciences of Uzbekistan, Tashkent 700125, UzbekistanH. SinghalLaser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, IndiaP. A. NaikLaser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, IndiaV. AroraLaser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, IndiaU. ChakravartyLaser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, IndiaJ. A. ChakeraLaser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, IndiaRaees Ahmad KhanLaser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, IndiaI. A. KulaginAkadempribor Scientific Association, Academy of Sciences of Uzbekistan, Tashkent 700125, UzbekistanP. V. RedkinSamarkand State University, Samarkand 703004, UzbekistanM. RaghuramaiahLaser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, IndiaP. D. GuptaLaser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India
ABI
Аннотация
An experimental study of high-order harmonic generation in In, InSb, InP, and InGaP plasmas using femtosecond laser radiation with variable chirp is presented. Intensity enhancement of the 13th and 21st harmonics compared to the neighboring harmonics by a factor of 200 and 10, respectively, is observed. It is shown that the harmonic spectrum from indium-containing plasma plumes can be considerably modified by controlling the chirp of the driving laser pulse.
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