1.3μm帯分布帰還型レーザを光源とした高速波数掃引方式LASシステムによる水蒸気の吸収スペクトル測定

概要

論文の詳細を見る
The distributed feedback (DFB) laser is a useful light source for the laser absorption spectrometry (LAS) because of its property of single-mode light emission and of continuous tunability depending on temperature control. In order to develop a portable quick scanning laser absorption spectrometry (LAS) system, I employed the laser and tuned its wavelength by a periodic current wave composed of serial saw-shapes. One scanning of absorption lines takes the constructed system 5ms. A feasibility test for the spectrometry has monitored water vapor in the atmosphere indoors. An H_2O absorption spectrum was obtained with a 60-m round trip optical path. The absolute absorption of the spectrum almost agreed with its theoretical value.
福山大学の論文