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Efficient direct diode-laser frequency doubling in quasi-phase-matched LiNbO(3) waveguides
Optics Letters
|October 2, 2009
Summary
We achieved efficient blue light generation using direct diode-laser frequency doubling in lithium niobate waveguides. This study optimizes key factors for high-power laser applications.
Area of Science:
- Photonics and Laser Technology
- Materials Science
Background:
- Direct diode-laser frequency doubling is crucial for efficient blue light generation.
- Lithium niobate (LiNbO3) channel waveguides offer a promising platform for nonlinear optical processes.
Purpose of the Study:
- To report efficient blue-light generation via direct diode-laser frequency doubling.
- To investigate critical issues affecting frequency-conversion efficiency in LiNbO3 channel waveguides.
Main Methods:
- Utilized second-order quasi-phase-matching in LiNbO3 channel waveguides.
- Addressed challenges in input coupling and phase-matching bandwidth.
- Analyzed the impact of diode laser spectral mode structure on efficiency.
Main Results:
- Achieved an efficient frequency-conversion efficiency of 22%/W for blue-light generation.
- Demonstrated successful direct diode-laser frequency doubling in the waveguide structure.
Conclusions:
- Efficient blue-light generation is feasible using quasi-phase-matched LiNbO3 channel waveguides.
- Optimizing laser spectral properties is key for maximizing frequency-conversion efficiency.
