The use of three-photon absorption for optical limiting of laser radiation
R. A. GaneevAkadempribor Scientific Association, Academy of Sciences of Uzbekistan, Akademgorodok, Tashkent, 700125, UzbekistanA. I. Ryasnyanskiı̆Navoi Samarkand State University, Samarkand, 703004, UzbekistanМ. К. КодировNavoi Samarkand State University, Samarkand, 703004, UzbekistanFarkhad AkhmedzhanovNavoi Samarkand State University, Samarkand, 703004, UzbekistanT. UsmanovNavoi Samarkand State University, Samarkand, 703004, Uzbekistan
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Аннотация
The results of a study of nonlinear refraction and nonlinear absorption at a wavelength of 532 nm in an LGO (Li2Ge2O15) crystal by Z-scan methods are presented. It is shown that the nonlinear refraction is caused by self-focusing of the laser radiation, whereas the nonlinear absorption is three-photon in nature. The possibility of using an LGO crystal for producing the optical limiting of laser radiation of picosecond duration is demonstrated.
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