放電Xeガスの1.15μmにおける屈折率変化
1973 年 42 巻 8 号 p. 800-806
詳細
1973 年 42 巻 8 号 p. 800-806
The idea of using discharged Xe gas as variable refractive index medium at 1.1526 μm of Ne laser was conceived on the expectation of the effect near the anomalous dispersion of Xe. Its refractive index was measured by means of Jamin interferometer.
As the result of measurement, it was shown that discharged Xe gas (weakly ionized) of nearly 30 Torr brings about a change in refractive index of about -10-5 (Δn). Such magnitude of Δn will be able to vary Ne laser's frequency at 1.15μm over more than 500 MHz if the cell containing discharged Xe gas of appropriate length is put into the laser cavity.
It was made-clear that the cause of Δn is mainly due to the effect near the anomalous dispersions of the transitions 3d5-3p6 (1.1494μm, Δn>0), 3d6-2p4 (1.1617μm, Δn>0) by measuring Xe spectra, mixing Kr gas with Xe gas, and irradiating specified Xe spectra.
