We report direct nanoscale imaging of ultrafast plasmon in a gold dolmen nanostructure excited with the 7is laser pulses by combining the interferometric time-resolved technology with the three-photon photoemission el...We report direct nanoscale imaging of ultrafast plasmon in a gold dolmen nanostructure excited with the 7is laser pulses by combining the interferometric time-resolved technology with the three-photon photoemission electron microscopy （PEEM）. The interferometric time-resolved traces show that the plasmon mode beating pattern appears at the ends of the dimer slabs in the dolmen nanostructure as a result of coherent superposition of multiple localized surface plasmon modes induced by broad bandwidth of the ultrafast laser pulses. The PEEM measurement further discloses that in-phase of the oscillation field of two neighbor defects are surprisingly observed, which is attributed to the plasmon coupling between them. Furthermore, the control of the temporal delay between the pump and probe laser pluses could be utilized for manipulation of the near-field distribution. These findings deepen our understanding of ultrafast plasmon dynamics in a complex nanosystem.展开更多
The East Asian stone sheds and dolmens called in the present paper are distrlbuted in the Liaodong Peninsula of China，the Korean Peninsula，and Kyushu of Japan．According to studies，dolmens in Kyushu made their firs...The East Asian stone sheds and dolmens called in the present paper are distrlbuted in the Liaodong Peninsula of China，the Korean Peninsula，and Kyushu of Japan．According to studies，dolmens in Kyushu made their first appearance in the second half of the final stage of Jomon period．As commonly recognized in international academic circles，the Kyushu dolmens of Japan are the latest in date among the East Asian stone sheds and dolmens．Recently，based on“C dating，the National Museum of Japanese History antedated the beginning stage of Yayoi period to about 1000 BC，and the second half of the final stage of Jomon period，correspondingly，to more than 1000 BC．As a result，the first appearance of dolmens in Kyushu will be dated much earlier than that in the southern Korean Peninsula，which，obviously，would be an error．展开更多
基金Supported by the National Basic Research Program of China under Grant No 2013CB922404the National Natural Science Foundation of China under Grant Nos 11474040,11474039,61605017 and 61575030the Project of Changchun Science and Technology Bureau under Grant No 14KP007
文摘We report direct nanoscale imaging of ultrafast plasmon in a gold dolmen nanostructure excited with the 7is laser pulses by combining the interferometric time-resolved technology with the three-photon photoemission electron microscopy （PEEM）. The interferometric time-resolved traces show that the plasmon mode beating pattern appears at the ends of the dimer slabs in the dolmen nanostructure as a result of coherent superposition of multiple localized surface plasmon modes induced by broad bandwidth of the ultrafast laser pulses. The PEEM measurement further discloses that in-phase of the oscillation field of two neighbor defects are surprisingly observed, which is attributed to the plasmon coupling between them. Furthermore, the control of the temporal delay between the pump and probe laser pluses could be utilized for manipulation of the near-field distribution. These findings deepen our understanding of ultrafast plasmon dynamics in a complex nanosystem.
文摘The East Asian stone sheds and dolmens called in the present paper are distrlbuted in the Liaodong Peninsula of China，the Korean Peninsula，and Kyushu of Japan．According to studies，dolmens in Kyushu made their first appearance in the second half of the final stage of Jomon period．As commonly recognized in international academic circles，the Kyushu dolmens of Japan are the latest in date among the East Asian stone sheds and dolmens．Recently，based on“C dating，the National Museum of Japanese History antedated the beginning stage of Yayoi period to about 1000 BC，and the second half of the final stage of Jomon period，correspondingly，to more than 1000 BC．As a result，the first appearance of dolmens in Kyushu will be dated much earlier than that in the southern Korean Peninsula，which，obviously，would be an error．
