Abstract
The ladder structure of the quasi-energy states of a one-dimensional semiconductor superlattice under combined dc-ac fields has been studied by calculating the absorption spectrum based on the semiconductor Bloch equations. In particular, we investigated the periodic motion of the carriers in a band under an ac field or a dc field. Under ac field with the frequency of ωL, we found periodic motion of ωL, which was very similar to the Bloch oscillation under the a dc field. The ladder structure of quasi-energy states with a ladder spacing ℏωL under an ac field were shown to be the counterparts of the frequency domain of periodic motion. Under combined ac-dc fields, we found the absorption peaks corresponding to the so-called dynamical fractional Stark ladders with energies ∈o + mℏωB + m′ℏωL, where m and m′ are integers and ωB is the Bloch oscillation frequency.
| Original language | English |
|---|---|
| Pages (from-to) | 614-617 |
| Number of pages | 4 |
| Journal | Journal of the Korean Physical Society |
| Volume | 38 |
| Issue number | 5 |
| Publication status | Published - 2001 May 1 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
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Time-dependence of quasi-energy states and dynamical fractional stark ladders in semiconductor superlattice. / Je, Koo Chul; Park, Seung Han; Kim, Yup.
In: Journal of the Korean Physical Society, Vol. 38, No. 5, 01.05.2001, p. 614-617.Research output: Contribution to journal › Article
TY - JOUR
T1 - Time-dependence of quasi-energy states and dynamical fractional stark ladders in semiconductor superlattice
AU - Je, Koo Chul
AU - Park, Seung Han
AU - Kim, Yup
PY - 2001/5/1
Y1 - 2001/5/1
N2 - The ladder structure of the quasi-energy states of a one-dimensional semiconductor superlattice under combined dc-ac fields has been studied by calculating the absorption spectrum based on the semiconductor Bloch equations. In particular, we investigated the periodic motion of the carriers in a band under an ac field or a dc field. Under ac field with the frequency of ωL, we found periodic motion of ωL, which was very similar to the Bloch oscillation under the a dc field. The ladder structure of quasi-energy states with a ladder spacing ℏωL under an ac field were shown to be the counterparts of the frequency domain of periodic motion. Under combined ac-dc fields, we found the absorption peaks corresponding to the so-called dynamical fractional Stark ladders with energies ∈o + mℏωB + m′ℏωL, where m and m′ are integers and ωB is the Bloch oscillation frequency.
AB - The ladder structure of the quasi-energy states of a one-dimensional semiconductor superlattice under combined dc-ac fields has been studied by calculating the absorption spectrum based on the semiconductor Bloch equations. In particular, we investigated the periodic motion of the carriers in a band under an ac field or a dc field. Under ac field with the frequency of ωL, we found periodic motion of ωL, which was very similar to the Bloch oscillation under the a dc field. The ladder structure of quasi-energy states with a ladder spacing ℏωL under an ac field were shown to be the counterparts of the frequency domain of periodic motion. Under combined ac-dc fields, we found the absorption peaks corresponding to the so-called dynamical fractional Stark ladders with energies ∈o + mℏωB + m′ℏωL, where m and m′ are integers and ωB is the Bloch oscillation frequency.
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M3 - Article
AN - SCOPUS:0035343826
VL - 38
SP - 614
EP - 617
JO - Journal of the Korean Physical Society
JF - Journal of the Korean Physical Society
SN - 0374-4884
IS - 5
ER -