The CO2 laser emits electromagnetic waves at two close frequencies n1, n2 at an average vacuum wavelength l = 10.6 μm. After mixing in a nonlinear crystal with radiation from a neodymium glass laser (l0 = 1.06 μm), waves with combination frequencies n1 + n0, n2 + n0 are formed. It was found that the corresponding wavelengths differ by dl = 0.5 nm. Determine the difference in wavelengths Dl of CO2 laser radiation.

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