【摘要】 报道了一种微米级尺寸的微球腔近红外激光发射装置。在一种具有分相结构的玻璃中，利用Ho³⁺离子掺杂，制备了具有高Q值和高光学损伤阈值的玻璃微球激光器，微球的直径仅为42.81μm。经过实验测量计算，该微球激光器的Q值为1.25×10⁶。利用拉锥光纤将泵浦光耦合到微球中，成功激发了稀土离子的发光，并利用微球作为激光谐振腔监测到了2.04μm的单模激光发射。此外，我们将玻璃的转变温度（T_g）值作为衡量微球激光器的抗损伤参数，证明该微球激光器可以在复杂的环境中稳定工作。更多还原

【Abstract】 In this paper, a microscale near-infrared microsphere laser was demonstrated, based on a phase-separated glass matrix doped with Ho³⁺ ions. The glass microsphere with a diameter of 42. 81 μm was fabricated, exhibiting a high optical quality factor（Q） of 1. 25 × 10⁶ and a high damage threshold. Pump light was coupled into the microsphere using a tapered optical fiber, resulting in efficient excitation of the rare-earth ions, and single-mode laser emission at 2. 04 μm was observed from the microspherical resonator. Additionally, the glass transition temperature（T_g） was employed as an indicator of the device’s resistance to laser-induced damage, confirming that stable operation can be achieved under complex environmental conditions.更多还原