Development of Tunable Diode Laser Absorption Spectroscopy with Optical Hollow Fiber and NOx Measurement by UV Tunable Diode Laser Absorption

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  • 中空ファイバ利用半導体レーザ吸収法の開発と紫外域半導体レーザ吸収法を用いたNOx 計測
  • チュウクウ ファイバ リヨウ ハンドウタイ レーザ キュウシュウホウ ノ カイハツ ト シガイイキ ハンドウタイ レーザ キュウシュウホウ オ モチイタ NOx ケイソク

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Recent years have already seen tighter regulation on harmful substances such as NOx, CO and CO2. In car engines an increasing concern in environmental issues such as air pollution, global warming and petroleum depletion has helped drive researches into various ways. The purpose of this research is the development of a prompt measurement technique which can be applicable to various engine conditions. The tunable diode laser absorption spectroscopy using the hollow fiber has been developed to satisfy above requirements. A sensitive method using tunable UV diode laser absorption spectroscopy was also discussed to detect NOx in exhausts.

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