| Autor: |
Pan Wei, Zhong Guan, Ling-Ling Du, Zhi-Hong Jiao, Lei Zhang, Guo-Li Wang, Shi-Lin Hu, Song-Feng Zhao |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Optics Express. 29:43212 |
| ISSN: |
1094-4087 |
| Popis: |
We theoretically study the spectral and temporal fine subpeak structures in the below-threshold harmonic (BTH) spectra of the stretched H2 and N2 molecules by solving the one-electron time-dependent Schrödinger equation (TDSE) in conjunction with the wavelet time-frequency analysis. We identify such fine subpeaks come from the Rabi-flopping between the ground state and the first excited state using the simple two-state model. We also confirm that these subpeak structures in BTH spectra are common for molecules at large internuclear distances if two molecular states are strongly coupled. Furthermore, the spacing between the adjacent subpeaks in BTH spectra can be determined approximately by analyzing the induced dipole moment in the time domain. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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