Diffraction manipulation by four-wave mixing

Superresolution four-wave mixing microscopy.

We report on the development of a superresolution four-wave mixing microscope with spatial resolution approaching 130 nm which represents better than twice the diffraction limit at 800 nm while retaining the ability to acquire materials- and chemical- specific contrast. The resolution enhancement is achieved by narrowing the microscope's excitation volume in the focal plane through the combined...

Four-wave-mixing gap solitons

Yanpeng Zhang,1,* Zhiguo Wang,1 Huaibin Zheng,1 Chenzhi Yuan,1 Changbiao Li,1 Keqing Lu,1 and Min Xiao2,† 1Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Lab of Information Photonic Technique, Xi’an Jiaotong University, Xi’an 710049, China 2Department of Physics, University of Arkansas, Fayetteville, Arkansas 72701, USA (Received 10 November 2009;...

Intermixing between four-wave mixing and six-wave mixing in a four-level atomic system

Abstract We investigate the interplay between six-wave mixing (SWM) and four-wave mixing (FWM) resulting from atomic coherence and polarization beat in a four-level atomic system. The dressed FWM evolution and competition pathways can be controlled by the coupling field to exhibit two FWM and SWM turning points, FWM+SWM, and FWM+FWM interference regions. Quantum interference between two FWM or ...

Phase conjugation by four-wave mixing of statistical beams.

A study of the influence of the spatial structure and statistics of the pump beams in the phaseconjugation process is made, showing that the reflectivity varies along the phase-conjugation mirror when the phase factor in the coupling equations that describe the process is not constant. The mutual coherence function of the generated field is calculated from the mutual reflectivity of the mirror ...

Imaging Gold Nanorods by Plasmon-Resonance-Enhanced Four Wave Mixing