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Microknot resonators, locally fused using a two-probe technique, have exhibited significantly improved optical performance and mechanical stability. They have been operated with low losses both in-situ and as transferred devices. We found consistently more than threefold dynamical range enhancement, which remained stable in time, in electrically fused MKRs. These devices can be harbored in next generation...
We present a simple robust local electrical fusing approach for microknot resonators using a two-probe technique. These devices exhibit significantly improved optical performance and mechanical stability, and can be applied in next generation optomechanical sensors.
We present highly efficient time-lenses for orthogonal polarized signal waves with a specific state of polarization. Our four-wave mixing based time-lenses exploit polarization mode dispersion to compensate for chromatic dispersion. The results reveal that the efficiency of the time-lens is increased fivefold for both states of polarization. We also compensate for any polarization-dependent losses...
Accelerating wavepackets in the time domain are demonstrated using four-wave-mixing (FWM). By incorporating two FWM interactions, acceleration of the wavepacket beyond the limit set by the temporal aperture of the pump pulse is achieved.
We present a technique for performing single-shot optical cross-correlations in a silicon waveguide and show that it can be applied to the cross correlation of two 300-fs signals.
Experimental realization for phase-locking large arrays of lasers arranged in a variety of 2D geometries is presented. Using our degenerate-cavity coupling between lasers is easily controlled giving rise to a variety of intriguing phase structures.
We present the first experimental demonstration of cloaking an event in the time domain. Our temporal cloaking scheme is based on the time-space duality and the use of novel split time-lenses.
Phase locking of coupled fiber lasers requires that there exists at least one longitudinal-mode common to all lasers within their bandwidth. As the number of coupled lasers increases, the probability of finding such a longitudinal-mode drops exponentially [1]. Nevertheless, since the length and the corresponding longitudinal-modes of each fiber laser fluctuate randomly due to acoustic and thermal...
A theoretical model characterizing the coherence and phase properties of two weakly coupled lasers is presented. Our calculations show how amplitude dynamics of non-phase locked lasers may enhance coherence by nearly an order of magnitude.
Configurations for efficient free space coherent addition of four separate fiber lasers arranged in two dimensional array are presented. They include compact and robust interferometric combiners that can be inserted either inside or outside the cavity of the combined lasers system. The results reveal that over 85% combining efficiency can be obtained.
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