1999 Fiscal Year Final Research Report Summary
Development of infrared imaging using degenerate four wave mixing
| Project/Area Number |
10650044
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | KYUSHU UNIVERSITY |
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Principal Investigator |
OKADA Tatsuo Kyushu University, Departmente Of Electrical and Electronic System Engineering Graduat School Of Information Science And Electrical Engineering Professor, 大学院・システム情報科学研究科, 教授 (90127994)
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| Co-Investigator(Kenkyū-buntansha) |
岡田 龍雄 九州大学, 大学院・システム情報科学研究科, 教授 (90127994)
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| Project Period (FY) |
1998 – 1999
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| Keywords | Laser spectroscopic imaging / Infrared imaging / Degenerate four wave mixing spectroscopy / Frequency up-conversion / Laser ablation / Image intensifier / Coherent imaging system / Nonlinear optics |
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| Research Abstract |
Laser-spectroscopic two-dimensional imaging(2D-imaging)is a very powerful technique for the investigation of the species behavior in the chemical environments such as combustion, plasma and so on. However, 2D-imaging in the infrared wavelength region is limited due to a lack of a fast, sensitive imaging device. To overcome this problem, We have proposed the frequency up-conversion detection of IR DFWM images for the visualization of species distribution in the gas phase. The ability of the present system has been demonstrated by visualizing an expanding Cs plume generated by the laser ablation in a background gas. The fidelity of the proposed system has been investigated numerically and experimentally.
The present scheme can be easily extended into the mid-infrared region by employing a commercially available optical parametric oscillator as a pump source for DFWM and a suitable nonlinear crystal such as KTP instead of B=BBO.
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