Microwave frequency combs source based on Brillouin scattering

2015 ◽  
pp. 579-582
Author(s):  
Peng Zhang ◽  
Tianshu Wang ◽  
Wanzhuo Ma ◽  
Lizhong Zhang ◽  
Shoufeng Tong ◽  
...  
Keyword(s):  
Brillouin Scattering ◽  
Microwave Frequency ◽  
Frequency Combs

Application of Brillouin scattering to optical frequency combs

2012 ◽  
Author(s):  
Juan Galindo-Santos ◽  
Mercedes Alcon-Camas ◽  
Sonia Martin-Lopez ◽  
Ana Carrasco-Sanz ◽  
Pedro Corredera
Keyword(s):  
Brillouin Scattering ◽  
Optical Frequency ◽  
Optical Frequency Combs ◽  
Frequency Combs

scholarly journals Stimulated Brillouin Review: Invented 50 Years Ago and Applied Today

2018 ◽  
Vol 2018 ◽  
pp. 1-17 ◽  
Author(s):  
Elsa Garmire
Keyword(s):  
Optical Fibers ◽  
Brillouin Scattering ◽  
Phase Conjugation ◽  
Low Noise ◽  
Microwave Signal ◽  
Optical Systems ◽  
Frequency Combs ◽  
Scientific Instrumentation ◽  
Stimulated Brillouin ◽  
Signal Processors

Stimulated Brillouin scattering (SBS) is embedded today in a variety of optical systems, such as advanced high-power lasers, sensors, microwave signal processors, scientific instrumentation, and optomechanical systems. Reduction in SBS power requirements involves use of optical fibers, integrated optics, micro-optic devices, and now nano-optics, often in high Q cavities. It has taken fifty years from its earliest invention by conceptual discovery until today for SBS to become a practical and useful technology in a variety of applications. Some of these applications are explained and it is shown how they are tied to particular attributes of SBS: phase conjugation, frequency shifts, low noise, narrow linewidth, frequency combs, optical and microwave signal processing, etc.

Mechanisms for nonthermal effects on ionic mobility during microwave processing of crystalline solids

1992 ◽  
Vol 7 (2) ◽  
pp. 495-501 ◽  
Author(s):  
John H. Booske ◽  
Reid F. Cooper ◽  
Ian Dobson
Keyword(s):  
Activation Energy ◽  
Brillouin Scattering ◽  
Microwave Sintering ◽  
Microwave Frequency ◽  
Radiation Energy ◽  
Ionic Mobility ◽  
Microwave Processing ◽  
Tracer Diffusion ◽  
Crystalline Solids ◽  
Resonant Coupling

Models for nonthermal effects on ionic motion during microwave heating of crystalline solids are considered to explain the anomolous reductions of activation energy for diffusion and the overall faster kinetics noted in microwave sintering experiments and other microwave processing studies. We propose that radiation energy couples into low (microwave) frequency elastic lattice oscillations, generating a nonthermal phonon distribution that enhances ion mobility and thus diffusion rates. Viewed in this manner, it is argued that the effect of the microwaves would not be to reduce the activation energy, but rather to make the use of a Boltzmann thermal model inappropriate for the inference of activation energy from sintering-rate or tracer-diffusion data. A highly simplified linear oscillator lattice model is used to qualitatively explore coupling from microwave photons to lattice oscillations. The linear mechanism possibilities include resonant coupling to weak-bond surface and point defect modes, and nonresonant coupling to zero-frequency displacement modes. Nonlinear mechanisms such as inverse Brillouin scattering are suggested for resonant coupling of electromagnetic and elastic traveling waves in crystalline solids. The models suggest that nonthermal effects should be more pronounced in polycrystalline (rather than single crystal) forms, and at elevated bulk temperatures.

Sign in / Sign up

Export Citation Format

Share Document