Advances in Nonlinear Optics: From Fundamentals to Applications

Dear Colleagues,

This issue focuses on the very recent advances in nonlinear optics and its applications, which has been growing exponentially on various integrated platforms. Due to lower dimensions and strong light confinement, nonlinearity can be investigated using low laser powers and on micro-/nano-scales for a range of phenomena, including harmonic generation, frequency conversion, supercontinuum, and quantum bit manipulation, and over a wide optical range on fundamental research levels. The applications include optical clock, LiDAR, spectroscopy, imaging, detection, communication, etc. This Special Issue is aimed at including fascinating developments in all aspects of nonlinear optics and its applications including, but not limited to, the following areas:

1. Nonlinear optics, like and -based nonlinearity;
2. Integrated photonics on different material platforms;
3. Novel photonics devices and applications;
4. Ultrafast all-optical processing;
5. Nonlinear waveguides and optical fiber;
6. Nonlinear effects in nanostructures: plasmonics and metamaterials;
7. Frequency combs;
8. Nonlinear effects in microresonators;
9. Terahertz/microwave photonics;
10. Nonlinear imaging;
11. Optical supercontinuum;
12. Soliton and nonlinear localization effects;
13. Nonlinear propagation and filamentation;
14. Ultrafast dynamics and instabilities;
15. Nonlinear quantum effects;
16. Nonlinear optics for quantum information;
17. Nonlinear topological, non-Hermitian systems;
18. Attosecond and extreme nonlinear optics.

Dr. Wenjie Wan
Prof. Dr. Yuanlin Zheng
Guest Editors

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• nonlinear photonics
• integrated photonics
• photonic devices and applications
• integrated quantum optics
• synthetic dimensions
• non-hermitian optics

Title: Coherent Raman scattering spectral shapes in strong excitation regime (model calculations)
Authors: Georgi Hadjichristov
Affiliation: Georgi Nadjakov Institute of Solid State Physics
Abstract: The influence of the interference between coherent processes in third-order nonlinear Raman scattering on the spectral shapes of Raman-scattered light wave is numerically modeled and discussed in the cases of commonly used coherent Raman spectroscopy techniques. Effects on the lineshapes as depending on the laser intensity are analyzed for coherent Raman spectroscopy performed by excitation of molecular systems with focused laser pulses at high intensity. In this case, the interplay between the coherent processes in nonlinear Raman scattering, as well as laser power-induced resonance effects, may be significant and should be taken into account in the spectral lineshape analysis in coherent Raman spectroscopy and related applications, since the coherent Raman spectra may be considerably modified.