Abstract
A quantum mechanical treatment is given of the acoustooptic parametric conversion processes in dielectric crystals when the signal acoustical and idle light waves are transformed into each other in the presence of intensive optical pumping. The approximate Heisenberg equations of motion are found and solved for the creation and annihilation operators of signal and idle modes with due regard to the interaction of these modes with other light and vibratory modes of the crystal (“the thermostat”). It is shown that the thermostat influence results in noise and attenuation effects. These persistent noises are also converted from one mode into another and vice versa. Threshold conditions and asymptotic levels of noise are discussed.
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Dedicated to Prof. I. Tarján on his 70th birthday.
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Janszky, J., Yushin, Y.Y. On the quantum theory of parametric frequency converter. Acta Physica 53, 51–57 (1982). https://doi.org/10.1007/BF03156176
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DOI: https://doi.org/10.1007/BF03156176