Generation of high-order harmonics of femtosecond radiation from the surface of various media
R. A. GaneevAkadempribor Scientific Association, Academy of Sciences of Uzbekistan, Akademgorodok, 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, IndiaU. ChakravartyLaser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore, 452013, IndiaV. AroraLaser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore, 452013, IndiaJ. A. ChakeraLaser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore, 452013, IndiaM. RaghuramaiahLaser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore, 452013, IndiaRaees Ahmad KhanLaser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore, 452013, IndiaS. R. KumbhareLaser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore, 452013, IndiaReena KushwahaLaser 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
Abstract
The results of study of high-order harmonic generation from the surfaces of various materials by using femtosecond radiation with a variable chirp are presented. The analysis and optimization of radiation conversion into harmonics up to the fifteenth order (λ = 52.9 nm) are carried out. It is shown that the maximum conversion efficiency is realized for the surfaces of silver and glass. The wavelength of harmonics can be tuned over the 2-nm range by changing the chirp of the radiation converted.
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