2017 Fiscal Year Final Research Report
Development of a new high power mid-infrared light source and relaxation mechanism of DNA bases
| Project/Area Number |
15K13620
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Physical chemistry
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 分子分光 / 中赤外レーザー |
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| Outline of Final Research Achievements |
This project aimed development of a new mid-IR laser source in the 10-18 um range utilizing difference frequency generation in CdSe crystals and application to IR spectroscopy on gas-phase isolated molecules.
In order to improve output power and mode of tunable 3 um light, a dye laser was modified to both-sided pumping. This modification raised the output of the 3 um light about 20% and probably the beam mode, too. However, I could not obtain mid-IR generation from the CdSe crystals with suitable output power and reproducibility, as I expected at the time of the application. Although several optical configurations were tried in addition to the initial assumption, stable IR generation was not achieved.
Optionally, a time-resolved mid-IR spectroscopy on gas-phase molecular clusters was performed. This experiment allows us to extend the delay time up to 100 ns, which is significantly longer compared to standard time-resolved IR spectroscopy on supersonically cooled molecules and clusters.
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| Free Research Field |
分子分光学
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