Abstract:
The results are given of a calculation of the temperature and angular widths of the phasematching curve as a function of the phase-matching angle in the generation of a second harmonic in a lithium niobate crystal. It is shown that the angular width increases with the phase-matching angle, whereas the temperature width remains constant. The experimental results obtained for helium–neon laser radiation (λ = 1152 nm) are in good agreement with the results of the calculations.
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