VERY HIGH-Q WHISPERING-GALLERY MODE RESONANCES OBSERVED ON FUSED-SILICA MICROSPHERES
VERY HIGH-Q WHISPERING-GALLERY MODE RESONANCES OBSERVED ON FUSED-SILICA MICROSPHERES
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DOI：
10.1209/0295-5075/23/5/005
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发表时间：
1993-08-10
期刊：
影响因子：
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通讯作者：
HAROCHE, S
中科院分区：
文献类型：
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作者：
COLLOT, L;LEFEVRESEGUIN, V;HAROCHE, S
我们用相位调制光谱法研究了60 ~ 200微米直径的微球在高透射石英纤维末端用CO2法熔接得到的微球的窃窃廊模式（Mie共振）。利用调相半导体二极管激光束在玻璃棱镜内的全内反射，产生了780 nm的倏逝波。它被耦合到距离棱镜面固定距离的微球的Mie模式中。通过测量激光束调制在扫描其载波频率时的相幅转换，得到了光谱。观察到记录的q因子大于或等于2.10(9)，对应于光子存储时间长于1 μ s。讨论了这些共振在基础和应用项目中的应用。
We have studied by phase modulation spectroscopy the whispering-gallery modes (Mie resonances) of 60 to 200 mum diameter microspheres obtained by fusing with a CO2 law the end of a high-transmission silica fibre. An evanescent wave at 780 nm was produced by total internal reflection of a phase-modulated semiconductor diode laser beam in a glass prism. It was coupled into the Mie mode of the microsphere positioned at a fixed distance from the prism face. The spectrum was obtained by measuring the phase-to-amplitude conversion of the laser beam modulation as its carrier frequency was scanned. Record Q-factors greater-than-or-equal-to 2.10(9) were observed, corresponding to photon storage times longer than 1 mus. Applications of these resonances to fundamental and applied projects are discussed.