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Multiwavelength generation from multi-nonlinear optical process in a 2D PPLT
Optics Express
|December 10, 2017
Summary
Researchers achieved multi-wavelength generation using nonlinear photonic crystals in lithium tantalate. This optical parametric generation enables various frequency conversions through cascade processes and quasi-phase matching.
Area of Science:
- Nonlinear optics
- Photonics
- Materials science
Background:
- Lithium tantalate is a key material for nonlinear optical applications.
- Quasi-phase matching is crucial for efficient nonlinear frequency conversion.
- Cascade processes in nonlinear media enable complex light generation.
Purpose of the Study:
- To demonstrate multi-wavelength generation in nonlinear photonic crystals.
- To investigate optical parametric generation and subsequent frequency conversion processes.
- To explore the role of second-order nonlinear optical susceptibility (χ(2)) in lithium tantalate.
Main Methods:
- Fabrication of nonlinear photonic crystals using lithium tantalate.
- Utilizing optical parametric generation to initiate frequency conversion.
- Implementing quasi-phase matching conditions for optimized nonlinear processes.
Main Results:
- Successful demonstration of multi-wavelength generation.
- Observation of second harmonic generation and sum-frequency generation.
- Evidence of cascade processes involving χ(2) nonlinearities.
Conclusions:
- Nonlinear photonic crystals of lithium tantalate are effective for multi-wavelength generation.
- Optical parametric generation combined with quasi-phase matching facilitates efficient frequency conversion.
- The study highlights the potential of engineered lithium tantalate for advanced photonic applications.
