Tanabe Takasumi, Notomi Masaya, Taniyama Hideaki, Kuramochi Eiichi
NTT Basic Research Laboratories, NTT Corporation, 3-1, Morinosato Wakamiya Atsugi-shi, Kanagawa 243-0198 Japan.
Phys Rev Lett. 2009 Jan 30;102(4):043907. doi: 10.1103/PhysRevLett.102.043907.
Adiabatic frequency shifting is demonstrated by tuning an ultrahigh-Q photonic crystal nanocavity dynamically. By resolving the output temporally and spectrally, we showed that the frequency of the light in the cavity follows the cavity resonance shift and remains in a single mode throughout the process. This confirmed unambiguously that the frequency shift results from the adiabatic tuning. We have employed this process to achieve the dynamic release of a trapped light from an ultrahigh-Q cavity and thus generate a short pulse. This approach provides a simple way of tuning Q dynamically.
通过动态调谐超高Q值光子晶体纳米腔证明了绝热频移。通过对输出进行时间和光谱分辨，我们表明腔内光的频率跟随腔共振的移动，并且在整个过程中保持在单模状态。这明确证实了频移是由绝热调谐引起的。我们利用这一过程实现了从超高Q值腔中动态释放捕获的光，从而产生一个短脉冲。这种方法提供了一种动态调谐品质因数的简单方式。
