A physical interpretation of the formation of squeezed light at the doubled frequency is proposed. A quantum theory of second-harmonic generation in a ring cavity, with a resonance at the second harmonic, is developed. The efficiency of squeezing quantum fluctuations of the quadrature components is considered as a function of the mirror reflection coefficients and of the efficiency of conversion to the second harmonic in one cavity trip.

Quantum ElectronicsDec 31, 19952 citations

Second harmonic generation with photon number squeezed light as input

Meijuan Wu, Ling-An Wu, Shiqun Li

We investigate the quantum statistics of the fields produced in second harmonic generation when photon number squeezed light is used as input. It is found that the squeezed properties of the pump beam can be transferred to a certain extent to the second harmonic beam. The normalized photon fluctuations, or Fano factors, of the fundamental and second harmonic output fields are derived for various values of the interaction parameters.

Acta Physica Sinica (Overseas Edition)Oct 1, 19960 citations