Related Experiment Video
Updated: Dec 18, 2025
12:18
Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
17.4K
Coherently enhanced third-harmonic generation in cascaded microfibers
Optics Letters
|June 16, 2020
Summary
A new method uses cascaded silica microfibers for efficient third-harmonic generation. By controlling phase differences, researchers achieved a 20% conversion efficiency, demonstrating a robust optical interference-like process.
Area of Science:
- Nonlinear Optics
- Photonics
- Materials Science
Background:
- Third-harmonic generation (TH) is a key nonlinear optical process.
- Efficient TH generation is crucial for various photonic applications.
- Cascaded microfibers offer potential for enhanced light-matter interactions.
Purpose of the Study:
- To propose and demonstrate an efficient scheme for third-harmonic generation using cascaded silica microfibers.
- To investigate the role of phase difference tuning via pump power for output enhancement.
- To analyze the robustness of the conversion process against fabrication imperfections.
Main Methods:
- Theoretical analysis and numerical simulations of light propagation in cascaded silica microfibers.
- Investigating the influence of input pump power on phase difference and coherent overlap.
- Modeling the impact of random diameter deviations on TH output.
Main Results:
- Achieved a conversion efficiency of approximately 20% for third-harmonic generation.
- Demonstrated coherent overlap of TH signals through phase difference tuning.
- Showcased reduced sensitivity to random diameter variations due to interference-like behavior.
Conclusions:
- The proposed cascaded microfiber scheme provides an efficient route for third-harmonic generation.
- Phase control via pump power is a viable method for enhancing TH output.
- The process exhibits inherent robustness, making it suitable for practical applications.
