Study of a laser radar with tunable solid-state lasers for atmospheric global monitoring

用于大气全球监测的可调谐固态激光器激光雷达的研究

• 批准号: 04452106
• 负责人: MAEDA Mitsuo
• 金额: $ 3.84万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04452106/
• 关键词: Laser radar; Lisar; Tunable; Atmosphere; Earth warming; Infrared absorption

Global atmospheric problems, such as earth warming, ozone layr destroy, acid rain and so on, are the most important target to be urgently investigated, today.The laser radar (Lidar) is a very powerful technique to monitor the spatial distributions of atmosperic molecules.The objective of project is to study the possibility of the measurement of various air molecules, using a differential absorption lidar (DIAL) with a high-power tunable solid-state laser which greatly progresses in these years.The results of investigation are summarized as follows.1. DIAL measurement of atmospheric water vapor was successfully made up to 10km in the altitude with a tunable Alexandrite laser.2. A widely tunalble Ti : sapphire laser was developed, a new coherent source tunable up to 3.4mum was obtained with a Raman shifter.3. Based on the HITRAN database, the possibility of measurement of various air molicules was analyzed by a simulation code, and calculated the DIAL characteristics of CO_2, CO, CH_4 and N_2O molecules in the wavelength range of 1-5mum.The next target is the DIAL measurment of CH_4 at the 2-3mum band.

全球大气问题，如地球变暖、臭氧层破坏、酸雨等，是当今最迫切需要研究的重要目标，激光雷达（Lidar）是一种监测大气分子空间分布的强有力技术，本项目的目的是研究各种大气分子测量的可能性，利用近年来发展迅速的高功率可调谐固体激光器差分吸收激光雷达（DIAL）进行了激光雷达的研究，主要研究结果如下：1.利用可调谐紫翠宝石激光器成功地实现了10 km高空大气水汽的DIAL测量.研制了一台宽调谐钛宝石激光器，采用拉曼移相器获得了可调谐波长达3.4 μ m的相干光源.以HITRAN数据库为基础，利用模拟程序分析了各种空气分子的测量可能性，计算了CO_2、CO、CH_4和N_2O分子在1- 5 μ m波段的DIAL特性，下一步的目标是CH_4分子在2- 3 μ m波段的DIAL测量。

项目成果

舩山正宏: "パルスレーザー励起Ti:サファイアレーザーの可変波長域への応用" レーザー研究. 20. 752-760 (1992)

Masahiro Funayama：“脉冲激光泵浦钛宝石激光器在可调谐波长范围内的应用”激光研究 20. 752-760 (1992)。

Masahiro Funayama 他: "Continuously tunable coherent source over 202-3180nm based on a Ti:sapphire laser" Optics Communications. 102. 457-460 (1993)

Masahiro Funayama 等人：“基于钛蓝宝石激光器的 202-3180nm 连续可调相干源”光学通讯。 102. 457-460 (1993)

M.Funayama et al: "Expansion of tunable range of a Ti : sapphire laser pumped by a pulsed laser (in Japanese)" Laser Kenkyu. vol.20-No.9. 752-760 (1992)

M.Funayama 等人：“由脉冲激光泵浦的钛蓝宝石激光器的可调谐范围的扩展（日语）”Laser Kenkyu。

内海 通弘 他: "アレキサンドライトライダーによる大気中水蒸気の測定" レーザー研究. 21. 1031-1039 (1993)

Michihiro Utsumi 等人：“使用紫翠玉激光雷达测量大气水蒸气”激光研究 21. 1031-1039 (1993)。

内海 通弘 他: "地球温暖化に関与する大気中微量成分計測用差分吸収ライダー" レーザー研究. 22(掲載予定). (1993)

Michihiro Utsumi 等人：“用于测量与全球变暖相关的大气中痕量成分的差分吸收激光雷达”激光研究（1993 年）。