Topic
Parametric oscillator
About: Parametric oscillator is a research topic. Over the lifetime, 5836 publications have been published within this topic receiving 95631 citations. The topic is also known as: Parametric excitation.
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TL;DR: In this article, a formalism for describing optical parametric oscillation is developed, which is applied to the derivation of the oscillation threshold condition, power output, the Manley-Rowe conditions, index matching, and frequency tuning.
Abstract: A formalism for describing optical parametric oscillation is developed. The theory is applied to the derivation of the oscillation threshold condition, power output, the Manley-Rowe conditions, index matching, and frequency tuning.
74 citations
TL;DR: In this paper, a multisection dispersion-tailored in-line nonlinear fiber arrangement is proposed to achieve flat gain over ultrabroad bands with a single-pump fiber-optic parametric amplifier operating in the zero-dispersion wavelength region.
Abstract: We describe a simple scheme to allow for the achievement of flat gain over ultrabroad bands with a single-pump fiber-optic parametric amplifier operating in the zero-dispersion wavelength region. The proposed method, based on a multisection dispersion-tailored in-line nonlinear fiber arrangement, is demonstrated by both modulational instability theory and numerical simulations of the nonlinear Schrodinger equation. The results show that the design can be adjusted to generate gain bands that exceed either 100 nm with a ripple of less than 0.2 dB and for a pump power of only 500 mW, or even 200 nm when a pump power of 5 W is used. In addition, the robustness of this gain-flattening technique has been numerically checked against random fluctuations of the zero-dispersion wavelength in each of the fiber sections.
74 citations
TL;DR: In this article, the effects of system nonlinearities on degenerate parametric amplifiers are investigated, and it is shown that parametric amplification can be realized in nonlinear, dynamic-range limited systems, such as resonant micro- or nanosystems, but at the expense of performance degradation.
Abstract: This work investigates the effects of system nonlinearities on degenerate parametric amplifiers. A simple, Duffing-type nonlinearity is appended to a representative equation of motion for a mechanical or electromechanical parametric amplifier, and classical perturbation methods are used to characterize the resulting effects on the amplifier’s frequency response and performance. Ultimately, the work demonstrates that parametric amplification can be realized in nonlinear, dynamic-range limited systems, such as resonant micro- or nanosystems, but at the expense of performance degradation. Additionally, it is shown that nonlinear amplifiers can be operated above their linear instability threshold but that doing so results in bistable amplified responses.
73 citations
TL;DR: In this paper, the linear stability of unbounded strained vortices in a stably stratified fluid is investigated theoretically and the problem is reduced to a Floquet problem which is solved numerically.
Abstract: The linear stability of unbounded strained vortices in a stably stratified fluid is investigated theoretically The problem is reduced to a Floquet problem which is solved numerically The three‐dimensional elliptical instability of Pierrehumbert type [Phys Rev Lett 57, 2157 (1986)] is shown to be suppressed by the stable stratification and it disappears when the Brunt–Vaisala frequency exceeds unity On the other hand, two classes of new instability mode are found to occur One appears only when the Brunt–Vaisala frequency is less than 2, whereas the other persists for all values of the Brunt–Vaisala frequency The former mode is related to a parametric resonance of internal gravity waves, and the latter modes are related to superharmonic parametric instability
73 citations
TL;DR: To the authors' knowledge this is the first time the output from a near-degenerate type I PPKTP OPO has been used for ZnGeP(2) OPO pumping.
Abstract: A tandem optical parametric oscillator (OPO) is used to convert radiation from 1.064 μm to the mid-infrared. Spectral bandwidth narrowing close to 80 times compared with a conventional cavity was a ...
73 citations