Department of Physics & Astronomy, Ball State University, Muncie, Indiana 47306, USA.
Opt Lett. 2010 Nov 1;35(21):3637-9. doi: 10.1364/OL.35.003637.
Optical fibers of 12 μm diameter were coated with a sputter-deposited layer (4 μm thick) of titanium (1 at. %)-doped amorphous aluminum nitride. When optically pumped by an Nd:YAG green laser at 532 nm, laser action was observed in whispering gallery modes around the fiber (in a ring shape) at 780.5 nm with a quality factor Q > 1500. Other modes were also observed between 775 and 800 nm. The primary and secondary modes give a mode separation of 4.6 nm. No waveguide modes were observed in the cavity.
直径为 12μm 的光纤涂覆有一层溅射沉积层（4μm 厚）的掺钛（1at.%）非晶氮化铝。当用 Nd:YAG 绿光激光器在 532nm 处进行光泵浦时，在光纤周围（呈环形）以 780.5nm 观察到 whispering gallery 模中的激光作用，其品质因数 Q>1500。还在 775nm 至 800nm 之间观察到其他模式。主模和次模的模式分离为 4.6nm。在腔中未观察到波导模式。
