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Updated: May 3, 2026
09:23
Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
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High-power continuous-wave frequency-doubling in KTiOAsO4.
Optics Express
|February 12, 2014
Summary
We achieved high-power continuous-wave green light generation at 533 nm using periodically poled potassium titanyl arsenate (KTA) crystals. This method demonstrates efficient second harmonic generation (SHG) for laser applications.
Area of Science:
- Laser physics and nonlinear optics.
- Solid-state laser development.
Background:
- High-power green light sources are crucial for various applications, including laser displays and scientific research.
- Periodically poled KTiOAsO(4) (KTA) is a nonlinear optical material suitable for frequency conversion.
Purpose of the Study:
- To demonstrate high-power continuous-wave (CW) generation at 533 nm.
- To investigate the performance of bulk periodically poled KTA for second harmonic generation (SHG).
Main Methods:
- Single-pass frequency doubling of a VBG-locked Ytterbium-doped fiber laser.
- Utilizing bulk periodically poled KTiOAsO(4) (KTA) crystals.
- Comparing the absorption characteristics and SHG performance of different KTA samples.
Main Results:
- Achieved 25% efficient second harmonic generation (SHG) of 13.6 W green light at 533 nm.
- The generated green light exhibited high spatial beam quality with M(2) <1.2.
- Identified optimal KTA samples for efficient frequency doubling.
Conclusions:
- Demonstrated efficient high-power CW green light generation using bulk periodically poled KTA.
- The results highlight the potential of KTA for high-power laser system development.
- Optimized SHG performance was achieved through careful sample selection and laser design.
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