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optical double (=double star)【天文學】雙星。

optical fibre

Ion detection technique has been successfully used in the study of rydberg states of na2 by pulse optical - optical double resonance . high - lying rydberg states near ionization limit have been observed and high sensitive and high gain spectra have been obtained . this technique is very useful for molecular spectroscopy 本文首次實現了鈉分子體系中離子探測脈沖激光光譜,研究了鈉分子電離限附近的高里德堡態,獲得了高靈敏度和高增益的光譜,拓寬了分子光譜研究領域。