Unidirectional Amplification and Shaping of Optical Pulses by Three-Wave Mixing with Negative Phonons

Abstract

A possibility to greatly enhance frequency-conversion efficiency of stimulated Raman scattering is shown by making use of extraordinary properties of three-wave mixing of ordinary and backward waves. Such processes are commonly attributed to negative-index plasmonic metamaterials. This work demonstrates the possibility to replace such metamaterials that are very challenging to engineer by readily available crystals which support elastic waves with contra-directed phase and group velocities. The main goal of this work is to investigate specific properties of indicated nonlinear optical process in short pulse regime and to show that it enables elimination of fundamental detrimental effect of fast damping of optical phonons on the process concerned. Among the applications is the possibility of creation of a family of unique photonic devices such as unidirectional Raman amplifiers and femtosecond pulse shapers with greatly improved operational properties.

6 pages, 4 figures. arXiv admin note: text overlap with arXiv:1304.6811

References in corpus (8)

• Nonlinear optical effects in artificial materials
• Four-wave mixing, quantum control and compensating losses in doped negative-index photonic metamaterials
• All-optically transformable broad-band transparency and amplification in negative-index films
• Mirrorless Negative-index Parametric Micro-oscillator
• Negative group velocity and three-wave mixing in dielectric crystals
• Resonant nonlinear optics of backward waves in negative-index metamaterials
• Coherent Nonlinear Optics and Quantum Control in Negative-Index Metamaterials
• Merging Nonlinear Optics and Negative-Index Metamaterials