Related Experiment Video
Updated: May 25, 2026
10:17
20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
Published on: July 12, 2017
Phase-matched third-harmonic generation in highly germanium-doped fiber.
K Bencheikh1, S Richard, G Mélin
1Laboratoire de Photonique et de Nanostructures CNRS-UPR 020, Marcoussis, France. kamel.bencheikh@lpn.cnrs.fr
Optics Letters
|February 3, 2012
Summary
Researchers demonstrated third-harmonic generation in germanium-doped optical fibers. This process efficiently converts infrared light into green light using a specially designed fiber.
Area of Science:
- Nonlinear Optics
- Optical Fiber Technology
- Materials Science
Background:
- Third-harmonic generation (THG) is a nonlinear optical process.
- Achieving phase matching is crucial for efficient THG.
- Optical fibers offer a compact platform for nonlinear optical processes.
Purpose of the Study:
- To demonstrate phase-matched third-harmonic generation in a germanium-doped optical fiber.
- To achieve efficient conversion of infrared light to visible green light.
- To explore the role of fiber parameters in phase matching.
Main Methods:
- Utilizing a germanium-doped optical fiber.
- Launching a ~1543.3 nm pump field in the fundamental LP(01) mode.
- Achieving phase matching through controlled germanium doping concentration and fiber core diameter.
Main Results:
- Successfully demonstrated phase-matched third-harmonic generation.
- Generated green light at 514.4 nm in the LP(03) mode.
- Identified specific germanium doping concentrations and core diameters for phase matching.
Conclusions:
- Germanium-doped optical fibers are suitable for phase-matched THG.
- Fiber design parameters significantly influence THG efficiency.
- This work enables efficient green light generation in optical fibers.
