Scientists have recently made a groundbreaking discovery about the nonlinear optical mechanisms of an important material known as BaB2O4. This material, which is used in many different types of lasers, has been studied for decades but only now have researchers been able to reveal the underlying nonlinear optical mechanism. By studying the material’s optical response at different temperatures, they were able to identify the nonlinear optical mechanism that is responsible for its high efficiency. This discovery could lead to the development of more efficient lasers and better optical materials in the future.

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source: Phys.org