SPIE Proceedings [SPIE 31st Annual Technical Symposium - San Diego, CA (Sunday 17 August 1986)] Infrared Technology XIII - <title>A Highly Sensitive And Compact SO2 Gas Sensor Using A Pbsnte Laser</title>Dohi, Masaji; Sawada, Akira; Sugiyama, Iwao; Shinohara, Koji; Ishizaki, Hiroyuki; Spiro, Irving J. · 1987