Development of infrared imaging using degenerate four wave mixing

简并四波混频红外成像的发展

• 批准号: 10650044
• 负责人: OKADA Tatsuo
• 金额: $ 1.98万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650044/
• 关键词: Laser spectroscopic imaging; Infrared imaging; Degenerate four wave mixing spectroscopy; Frequency up-conversion; Laser ablation; Image intensifier; Coherent imaging system; Nonlinear optics

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.

激光光谱二维成像（2D-imaging，简称2D-imaging）是研究物质在燃烧、等离子体等化学环境中的行为的一种非常有效的技术。然而，由于缺乏快速、灵敏的成像设备，红外波长区域的2d成像受到限制。为了克服这个问题，我们提出了红外DFWM图像的频率上转换检测，用于气相物种分布的可视化。通过在背景气体中激光烧蚀产生的膨胀的Cs羽流的可视化，证明了该系统的能力。对该系统的保真度进行了数值和实验研究。本方案可以很容易地扩展到中红外区域，通过采用市上可用的光学参量振荡器作为DFWM的泵浦源，并采用合适的非线性晶体（如KTP）代替B=BBO。

项目成果

Kouki Morishita: "Infrared laser spwctroscopic imaging based on degenerate four-wave mixing spectroscopy combined with frequency-upconversion detection"Opt. Lett.. 24・10. 688-690 (1999)

Kouki Morishita：“基于简并四波混合光谱与上转换检测相结合的红外激光光谱成像”Opt.. 24・10 (1999)。

Kouki Morishita: "Visualization of expanding laser-ablation plume by a proposed frequency up-converted Infraredspectroscopic Imaging"Technical Digest of IEEE/OSA Conference on Laser and Electro-Optics Pacific Rim. 322-323 (1999)

Kouki Morishita：“通过提议的频率上转换红外光谱成像实现扩展激光烧蚀羽流的可视化”IEEE/OSA 环太平洋激光和电光会议技术文摘。

Kouki Morishita: "Frequency up-conversion detection for infrared imaging degenarate four-wave micing spectroscopy"Technical Digest of IEEE/OSA Conference on Laser and Electro-Optics. 6・. 152 (1998)

Kouki Morishita：“红外成像简并四波麦克风光谱的频率上转换检测”IEEE/OSA 激光和电光会议技术文摘 6·（1998）。

Kouki Morishita: "Inforared degenerate four-wave mixing imaging using infrared to visible up-conversion" Technical Digest of IEEE/OSA Conference on Laser and Electro-Optics. (印刷中). (1999)

Kouki Morishita：“利用红外到可见光上转换的信息简并四波混合成像”IEEE/OSA 激光和电光会议技术文摘（1999 年出版）。

Kouki Morishita: "Infrared laser spectroscopic imaging based on degenerate four-wave mixing spectroscopy combined with frequency-upconversion detection"Opt. Lett.. 24. 688-690 (1999)

Kouki Morishita：“基于简并四波混合光谱与上转换检测相结合的红外激光光谱成像”Opt。