Multiple resonance-enhanced four-wave-mixing processes inI2

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

Surface-enhanced nonlinear four-wave mixing.

We report on a particularly strong third-order nonlinear response from nanostructured gold surfaces. Two incident laser beams with frequencies omega{1} and omega{2} give rise to four-wave mixing (4WM) fields with frequencies 2omega{1}-omega{2} and 2omega{2}-omega{1}. We demonstrate that the nonlinear response can be purely evanescent and that nanostructured surfaces convert the evanescent energ...

Interplay among multidressed four-wave mixing processes

Huaibin Zheng, Yanpeng Zhang, Zhiqiang Nie, Changbiao Li, Hong Chang, Jianping Song, and Min Xiao Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi’an Jiaotong University, Xi’an 710049, People’s Republic of China National Time Service Center, Chinese Academy of Sciences, Lintong 710600, People’s Republic of China Department of Physics, University of Arkansas, ...

Production of narrowband tunable extreme-ultraviolet radiation by noncollinear resonance-enhanced four-wave mixing.

Fourier-transform-limited extreme-ultraviolet (XUV) radiation (bandwidth approximately < 300 MHz) tunable around 91 nm is produced by use of two-photon resonance-enhanced four-wave mixing on the Kr resonance at 94 093 cm(-1). Noncollinear phase matching ensures the generation of an XUV sum frequency 2 omega1 + omega2 that can be filtered from auxiliary laser beams and harmonics by an adjustable...

Efficient energy transfer between four-wave-mixing and six-wave-mixing processes via atomic coherence

We demonstrate efficient energy exchange during propagation between four-wave-mixing FWM and sixwave-mixing SWM signals generated in a four-level inverted-Y atomic system, which fall in the electromagnetically induced transparency window. After an initial growth distance for both FWM and SWM fields in the atomic medium, these two nonlinear optical processes compete and exchange energy between t...