2010 Fiscal Year Final Research Report
Development of optimal control simulation and its applications
| Project/Area Number |
20350001
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Physical chemistry
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Project Period (FY) |
2008 – 2010
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| Keywords | コヒーレント制御 / レーザーパルス / 最適化 / 分子整列 / 分子配向 |
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| Research Abstract |
We have developed quantum optimal control simulation that can treat nonlinear interactions between a molecule and laser fields.(1)The simulation is applied to the alignment control of a nitrogen molecule. From the power spectrum of the cycle-averaged intensity of the optimal pulse, we have proposed a frequency network mechanism that effectively connects a few lowest rotational states through Raman transitions to achieve a high degree of alignment.(2)In the orientation control of a CO molecule, we have shown the effectiveness of a two-step control, in which an alignment pulse appear prior to an orientation pulse.(3)We further extended the simulation to explicitly include the polarization of a laser pulse. It was applied to the simultaneous rovibrational control with the aim of creating a rovibrational wave packet that cannot be achieved by a linearly polarized pulse.
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