Amplifiers are ubiquitous in electronics and play a fundamental role in a wide range of scientific measurements. From a user’s perspective, an ideal amplifier has very low noise, operates over a broad frequency range, and has a high dynamic range it is capable of handling strong signals with little distortion. Unfortunately, it is difficult to obtain all of these characteristics simultaneously....

Dynamical instabilities in a Rb F=1 spinor Bose-Einstein condensate are used as a parametric amplifier of quantum spin fluctuations. We demonstrate the spectrum of this amplifier to be tunable, in quantitative agreement with theory. We quantify the microscopic spin fluctuations of the initially paramagnetic condensate by applying this amplifier and measuring the resulting macroscopic magnetizat...

In this paper we propose a novel method of realizing discrete-time (D-T) signal amplification using NanoElectro-Mechanical (NEMS) devices. The amplifier uses mechanical devices instead of traditional solid-state circuits. The proposed NEMS-based D-T amplifier provides high gain and operate on a wide dynamic range of signals, consuming only a few micro watts of power. The proposed concept is sub...

A simple and robust ultrafast, high-peak-power 5-μm laser source for pumping a dielectric photonic structure for high-gradient electron acceleration has been designed and is being constructed. The 5-μm laser source consists of two components: (1) a type-II-BBO-based 2.05-μm optical parametric amplifier (OPA) as a pump source, and (2) a type-I-ZGP-based 5-μm OPA to produce mJ-class, <100 fs puls...

In the present paper, the recent applications of optical parametric amplifiers (OPAs) in hybrid wavelength division multiplexing (WDM)/time division multiplexing (TDM) local area passive optical networks have been modeled and parametrically investigated over wide range of the affecting parameters. Moreover, we have analyzed the ability of the hybrid WDM/TDM Passive optical networks to handle a ...

We present an amplification medium for optical parametric chirped-pulse amplification that allows for ultrabroadband gain in a collinear configuration. Our approach is based on aperiodic quasi-phase-matching (QPM). For the first demonstration of this method in a mid-IR optical parametric chirped-pulse amplifier, we chose a QPM grating design with a linear chirp of its associated spatial frequen...

The entangled optical beams generated by pulsed parametric down-conversion provide enhanced sensitivity for interferometry and enable quantum computation, but their rich spatiotemporal modal structure lacks a simple analytic model. This study shows that in properly defined curvilinear coordinates combining the frequency transverse wave vector, functions have form thus can be rather easily analy...