圧力の高い He-Ne ガスレーザーの発光特性 (I)

抄録

Oscillation characteristics of He-Ne gas laser in pressure range of 1-8 Torr (He/Ne: 5/1) are observed. When the pressure is high, pulsed laser oscillations start in a few microseconds after the application of r-f power. The oscillations last about 20 microseconds. When the rest time (repetition time minus pulse width) is varied, the peak of the pulse becomes maximum at the rest time of 700_??_900 microseconds while the wave form remains unchanged. The above seems attribu-table to the electron growth by the mechanism of He^M+He^M→He⁺+e+He, which causes the electron density to become maximum in the afterglow. In the succeeding excitation, these electrons gain energy quickly and collide with He atoms to give rise to the population inversion. The shortness of oscillation duration seems due to the blocking effect of lower level of Ne (1s).