Laser third harmonic generation in organic dye vapors
R. A. GaneevSamarkand State University, Samarkand, 703005, UzbekistanSh. R. KamalovSamarkand State University, Samarkand, 703005, UzbekistanМ. К. КодировSamarkand State University, Samarkand, 703005, UzbekistanM. R. MalikovSamarkand State University, Samarkand, 703005, UzbekistanA. I. Ryasnyanskiı̆Samarkand State University, Samarkand, 703005, UzbekistanR. I. TugushevSamarkand State University, Samarkand, 703005, UzbekistanSh.U. UmidullaevSamarkand State University, Samarkand, 703005, UzbekistanT. UsmanovSamarkand State University, Samarkand, 703005, Uzbekistan
ABI
Аннотация
The phenomenon of nonlinear optical conversion of a YAG:Nd laser radiation frequency from IR to UV spectral range in naphthalene vapors was studied. The optimum temperature of naphthalene vapors (170°C) was found at which the pumping radiation is synchronously converted into the third harmonic emission. A mechanism of the third harmonic generation is proposed based on the difference frequency generation in a six-photon process. The efficiency of conversion to the third harmonic generation varied within 10−10–10−8, depending on the pumping intensity and cell temperature. Nonlinear optical characteristics of naphthalene vapors were calculated for the generation using nonlinearities of the third and fifth order.
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