Ultrafast electroabsorption at the transition between classical and quantum response
Ultrafast electroabsorption at the transition between classical and quantum response
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DOI：
10.1103/physrevlett.85.3293
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发表时间：
2000-10-09
影响因子：
8.6
通讯作者：
Kono, J
中科院分区：
文献类型：
--
作者：
Chin, AH;Bakker, JM;Kono, J
我们报告的第一次观察到异常大的诱导吸收的半导体强烈驱动的强超短中红外激光场。据我们所知，这种超快的电吸收在带边以下的范围最大（类似于1 eV），我们将其解释为动态Franz-Keldysh效应的表现。当有质动力势与所施加场的光子能量相当时，即，当所施加的场处于经典和量子状态之间的过渡时。
We report the first observation of unusually large induced absorption in semiconductors strongly driven by intense ultrashort midinfrared laser fields. This ultrafast electroabsorption has the largest extent below the band edge (similar to 1 eV) ever observed, to our knowledge, which we interpret as being a manifestation of the dynamical Franz-Keldysh effect. The electroabsorption is observable when the ponderomotive potential is comparable to the photon energy of the applied field, i.e., when the applied field is at the transition between the classical and quantum regimes.