论文标题
在深孔散射腔中的非共振激光
Non-resonant lasing in a deep-hole scattering cavity
论文作者
论文摘要
随机激光器在光谱状态下有希望，其中传统激光器无法获得，其优势是制造成本低和适用于各种增益材料。但是，高阈值能力，低功率效率和光收集困难的阻碍，它们的实际应用受到阻碍。在这里，我们展示了使用多孔增益材料上的深孔易于实用的非振动激光。该违反直觉腔中的激光作用是通过从内表面上的强散射反射的非共振反馈来实现的。此外，从在多孔nd：yag陶瓷上制造的腔体获得了斜率效率，阈值功率和方向性的显着增强。
Random lasers are promising in the spectral regime, wherein conventional lasers are unavailable, with advantages of low fabrication costs and applicability of diverse gain materials. However, their practical application is hindered by high threshold powers, low power efficiency, and difficulties in light collection. Here, we demonstrate a power-efficient easy-to-fabricate non-resonant laser using a deep hole on a porous gain material. The laser action in this counterintuitive cavity was enabled by nonresonant feedback from strong diffuse reflections on the inner surface. Additionally, significant enhancements in slope efficiency, threshold power, and directionality were obtained from cavities fabricated on a porous Nd:YAG ceramic.
