We study the effects of atomic detuning in a composite system consisting of a degenerate optical parametric oscillator and a set of N homogeneously broadened two-level atoms. The stability regions and the optical spectra of this composite system are investigated as a function of atomic detuning and other parameters. Near the lower turning point of the bistable curve, the unsqueezed field quadra...

In this paper, we experimentally demonstrate non-degenerate parametric resonance in a torsional micro electro mechanical (MEM) oscillator with two interacting mechanical modes of oscillation. The parametric oscillation results from a displacement-dependent electrostatic force generated in both the modes of oscillation. There is a decoupling of the input and the output frequencies in this mode o...

An ultrafast laser system for the chemically important 3-mm spectral region has been constructed by means of noncritically phased-matched KTiOPO4 optical parametric gain elements. An optical parametric oscillator, synchronously pumped by a mode-locked Ti:sapphire oscillator, generates high-quality seed pulses for an optical parametric amplifier. The optical parametric amplifier, pumped by a hig...

Accurate phase-locked 3:1 division of an optical frequency was achieved, by using a continuous-wave (cw) doubly resonant optical parametric oscillator. A fractional frequency stability of 2×10-17 of the division process has been achieved for 100 s integration time. The technique developed in this work can be generalized to the accurate phase and frequency control of any cw optical parametric os...

We study parametric resonant decay of inflaton field with emphasis on its physical meaning. We show that the parametric resonance is indeed an induced process, which means that the more numbers of produced particles, the more inflaton field decays. We also consider the dissipative effects of produced particles and find that the dissipation reduces the resonant decay rate of inflaton field.

In this paper the second order liner differential equation

In this short note we consider wave equations with a periodic in time dissipation and discuss the effect of parametric resonance in the framework of energy estimates. The approach is based on a treatment for a generalized Mathieu equation related to the periodic dissipation term.

We study an optomechhanical device supporting at least three optical modes in the infrared telecommunication band and mechanical vibration modes. model coherent driving of each mode, independently other, to obtain effective Hamiltonian showing different types parametric processes allowed device. propose a bichromatic scheme, lossy cavity regime, under mean field approximation, that provides qua...