Barnes J, Carver B, Fraser J M, Gagliardi G, Loock H-P, Tian Z, Wilson M W B, Yam S, Yastrubshak O
Department of Chemistry, Queen's University, Kingston, ON K7L 3N6, Canada.
Opt Express. 2008 Aug 18;16(17):13158-67. doi: 10.1364/oe.16.013158.
The optical loss of whispering gallery modes of resonantly excited microresonator spheres is determined by optical lifetime measurements. The phase-shift cavity ring-down technique is used to extract ring-down times and optical loss from the difference in amplitude modulation phase between the light entering the microresonator and light scattered from the microresonator. In addition, the phase lag of the light exiting the waveguide, which was used to couple light into the resonator, was measured. The intensity and phase measurements were fully described by a model that assumed interference of the cavity modes with the light propagating in the waveguide.
通过光学寿命测量来确定共振激发微谐振器球体的回音壁模式的光学损耗。采用相移腔衰荡技术，根据进入微谐振器的光与从微谐振器散射的光之间的幅度调制相位差来提取衰荡时间和光学损耗。此外，还测量了用于将光耦合到谐振器中的波导输出光的相位滞后。强度和相位测量结果由一个假设腔模与在波导中传播的光发生干涉的模型充分描述。
