Signatures of Bardasis-Schrieffer mode excitation in third-harmonic generated currents

Quasiresonant excitation of InP/InGaP quantum dots using second harmonic generated in a photonic crystal cavity

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Higher Efficiency Switching Mode Power Amplifier Design using the Third-Harmonic Peaking Turning Mode

This paper provides the design approach of one stage switching-mode based class F power amplifier (PA).The device’s nonlinear behavior was analyzed to reduce the dissipated power over the active device and therefore the PA efficiency was increase without having to compromise the power amplifier’s size. The load harmonics were controlled so that the drain voltage and the drain current do rarely ...

Signatures of Coronal Currents in Microwave Images

Microwave emission from solar active regions at frequencies above 4 GHz is dominated by gyroresonance opacity in strong coronal magnetic elds, which allows us to use radio observations to measure coronal magnetic eld strengths. In this paper we demonstrate one powerful consequence of this fact: the ability to identify coronal currents from their signatures in microwave images. Speciically, we c...

16-fs, 1-microJ ultraviolet pulses generated by third-harmonic conversion in air.

We describe a simple method for generating sub-20-fs ultraviolet light pulses with useful average powers, using a kilohertz Ti:sapphire laser system. By focusing a 22-fs, 1-mJ laser pulse in air, we obtain ultraviolet pulses with an energy of 1 microJ and at a wavelength of 266 nm and with an average power of 1 mW. The pulse duration of the ultraviolet pulses was measured to be 16 fs with frequ...

Mode Excitation in a Gyrotron