Related Experiment Video
Updated: Oct 8, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Broadband sum-, difference-frequency generation and enhancement governed by Tamm state
Abstract:
Considering the second-order nonlinear effects of nonlinear media, utilizing the dynamically tunable property of field localization in aperiodic nonlinear hyperstructure (HS), the dependence relationship between the nonlinear processes generated by dual optical incidence and the layered HS is presented. Sum and difference frequency generation with a certain bandwidth is realized through the correspondence between conversion frequency and nonlinear medium thickness. The transfer S-matrix method is applied to calculate the efficiency of frequency conversion, where the conversion from T-matrix to S-matrix formalism enhances numerical stability while reducing the complexity of expressions. Matching the frequencies of two incident waves with Tamm resonances inside two band gaps enhances the nonlinear effects by exploiting the field localization characteristics.
Related Concept Videos
Bandpass Sampling
A bandpass signal has a spectrum with a lower frequency limit, denoted as ω1, and an upper frequency limit, denoted as ω2. The spectrum...
Properties of Fourier Transform I
In radio broadcasting, multiple audio signals often need to be transmitted simultaneously. The Fourier...
Sampling Theorem
Design Example
Discrete-Time Fourier Series
For a discrete-time periodic signal x[n]...
Carrier Generation and Recombination
This process is given by the generation rate G and is efficient due to the conservation of momentum between the valence band maximum and conduction band minimum.
Indirect generation involves an...