Development of TEA CO2 laser device with supersonic flow

超音速流TEA CO2激光装置的研制

• 批准号: 20560149
• 负责人: MASUDA Wataru
• 金额: $ 2.91万
• 依托单位: Nagaoka University of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20560149/
• 关键词: 超音速流; 炭酸ガスレーザ; 放電励起; ゲイン; ガス冷却; グロー放電; 衝撃波; 圧縮性流体; パルスグロー放電

TEA-CO_2 gas laser device using supersonic flow have been studied to increase the laser output. The shock-free supersonic nozzle is successfully developed with precise modification of the flow channel, which results in the stable excitation discharge for lasing. We also investigate the effect of gas temperature fall accompanied by adiabatic expansion on the laser output in the supersonic flow condition at M=2. The small-signal gain is measured at 2.25%/cm for the supersonic flow of the gas at 133K in temperature, which is around 1.4 times as high as that obtained for the still laser medium at the room temperature.

研究了利用超声速流的TEA-CO_2气体激光装置来提高激光输出。成功研制出无激振超音速喷嘴，对流道进行精确改造，实现激光稳定的激发放电。我们还研究了 M=2 超音速流动条件下伴随绝热膨胀的气体温度下降对激光输出的影响。对于133K温度下的超音速气体流，测得的小信号增益为2.25%/cm，大约是室温下静止激光介质所获得的小信号增益的1.4倍。

项目成果

超音速TEA-CO_2レーザ用ガス流の観測

超音速TEA-CO_2激光器气体流动观测

• 发表时间: 2009
• 作者: 斉藤裕之;今田剛;鈴木正太郎;増田渉
• 通讯作者: 増田渉

Gain Measurement of TEA-CO_2 Laser with Supersonic Gas Flow

超声速气流TEA-CO_2激光器增益测量

• 发表时间: 2010
• 期刊: Proc.XVIII Int'l Symp.on Gas Flow and Chem.Lasers & High Power Laser Conf., Sofia, Bulgaria SPIE-7751
• 作者: 今田剛;斉藤裕之;鈴木正太郎;増田渉
• 通讯作者: 増田渉

超音速流を利用したTEAICO_2レーザー装置のゲイン測定

使用超声速流进行 TEAICO_2 激光装置的增益测量

• 发表时间: 2010
• 期刊: 電気学会パルスパワー/放電合同研究会資料
• 作者: K.Horiuti;T.Fujisawa;K.Saitou;若林徹
• 通讯作者: 若林徹

超音速ガス流を用いたショックフリーTEA-CO_2レーザーの基礎検討

超声速气流无冲击TEA-CO_2激光器的基础研究

• 发表时间: 2009
• 作者: 今田剛;鈴木正太郎;増田渉
• 通讯作者: 増田渉

Evaluation of High-Repetition-Rate Excitation Discharge in TEA Gas Laser with Supersonic Gas Flow

超音速气流 TEA 气体激光器高重复率激发放电评估

• 发表时间: 2009
• 期刊: Proc.XVII Int'l Symp.on Gas Flow and Chem.Lasers & High Power Laser Conf., Lisbon, Portugal SPIE-7131
• 作者: Go Imada;Tran Thanh Son;Masataro Suzuki;Wataru Masuda
• 通讯作者: Wataru Masuda