Particular features of higher harmonics generation in nanocluster-containing plasmas using single- and two-color pumps
R. A. GaneevInstitute of Electronics, Uzbekistan Academy of Sciences, 100125, Tashkent, UzbekistanH. SinghalRaja Ramanna Centre for Advanced Technology, 452013, Indore, IndiaP. A. NaikRaja Ramanna Centre for Advanced Technology, 452013, Indore, IndiaJ. A. ChakeraRaja Ramanna Centre for Advanced Technology, 452013, Indore, IndiaM. TayyabRaja Ramanna Centre for Advanced Technology, 452013, Indore, IndiaArvind K. SrivastavaRaja Ramanna Centre for Advanced Technology, 452013, Indore, IndiaT. S. DhamiRaja Ramanna Centre for Advanced Technology, 452013, Indore, IndiaM. P. JoshiRaja Ramanna Centre for Advanced Technology, 452013, Indore, IndiaAsha SinghRaja Ramanna Centre for Advanced Technology, 452013, Indore, IndiaRama ChariRaja Ramanna Centre for Advanced Technology, 452013, Indore, IndiaS. R. KumbhareRaja Ramanna Centre for Advanced Technology, 452013, Indore, IndiaReena KushwahaRaja Ramanna Centre for Advanced Technology, 452013, Indore, IndiaRaees Ahmad KhanRaja Ramanna Centre for Advanced Technology, 452013, Indore, IndiaR K BhatRaja Ramanna Centre for Advanced Technology, 452013, Indore, IndiaP. D. GuptaRaja Ramanna Centre for Advanced Technology, 452013, Indore, India
ABI
Аннотация
The wavelength conversion of femtosecond laser pulses in laser plasmas containing clusters of different nature and dimension (fullerenes, metal nanoparticles) is studied. Pulses of a titanium-sapphire laser are used in combination with orthogonally polarized second-harmonic pulses as radiation to be converted. Variations in the generation efficiency of higher harmonics are analyzed under conditions of phase-modulated pulses. It is shown that the optimization of components of a nonlinear optical plasma medium, of plasma excitation conditions by single- and two-color pumps, and of phase and spectral parameters of radiation to be converted leads to a considerable increase in the generation efficiency of higher harmonics.
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