Institute of Applied Physics, CREST-JST, University of Tsukuba, Tsukuba 305-8573, Japan.
J Phys Condens Matter. 2010 Jul 7;22(26):264008. doi: 10.1088/0953-8984/22/26/264008. Epub 2010 Jun 14.
The development of time-resolved scanning tunnelling microscopy (STM), in particular, attempts to combine STM with ultrafast laser technology, is reviewed with emphasis on observed physical quantities and spatiotemporal resolution. Ultrashort optical pulse technology has allowed us to observe transient phenomena in the femtosecond range, which, however, has the drawback of a relatively low spatial resolution due to the electromagnetic wavelength used. In contrast, STM and its related techniques, although the time resolution is limited by the circuit bandwidth (∼100 kHz), enable us to observe structures at the atomic level in real space. Our purpose has been to combine these two techniques to achieve a new technology that satisfies the requirements for exploring the ultrafast transient dynamics of the local quantum functions in organized small structures, which will advance the pursuit of future nanoscale scientific research in terms of the ultimate temporal and spatial resolutions.
时间分辨扫描隧道显微镜（STM）的发展，特别是试图将 STM 与超快激光技术相结合的发展，本文着重于观察到的物理量和时空分辨率进行了综述。超快光脉冲技术使我们能够在飞秒范围内观察到瞬态现象，但由于所使用的电磁波长，其空间分辨率相对较低。相比之下，STM 及其相关技术虽然时间分辨率受到电路带宽（约 100 kHz）的限制，但使我们能够在实空间中观察到原子级的结构。我们的目的是将这两种技术结合起来，开发出一种新技术，以满足探索组织中小结构中局部量子功能超快瞬态动力学的要求，这将推动未来纳米尺度科学研究在时间和空间分辨率方面的发展。
