研究目的
Investigating the generation of a shape-invariant flat-top laser beam through simple intra-cavity beam shaping techniques.
研究成果
The study demonstrates that by optimizing the sizes of an absorbing ring and a circular aperture inside a laser cavity, it is possible to achieve simultaneous oscillation of LG00 and LG01 modes, resulting in a shape-invariant flat-top laser beam. This finding provides a correct interpretation of previous experimental observations and highlights the potential for practical applications in material processing, nonlinear frequency conversion, and material sputtering.
研究不足
The study assumes a bare cavity without considering the nonlinear properties of the gain medium, such as saturation effects. Thermal effects induced by the pump could potentially alter the beam characteristics, although experimental observations suggest stability across different pump power levels.
