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Tatehisa OHTA Wakao SASAKI Hideshi UEDA Kyoichi DEKI
Improvement of the frequency stability in a 3.39 µm He-Ne laser in which the hump profile of the magnetic modulation signal (MMS) is used as a control signal is performed by introducing an enriched isotope into the laser tube.
Kenji TOSHINO Kyoichi DEKI Tatehisa OHTA
On the transient wave form of the oscillation at 4416 Å in a He-Cd II hollow cathode laser excited by the square wave discharge, a sharp peak is found in the initial region where the peak value of the discharge current is high. The excitation mechanism for the peak is due to the direct collision between electrons and Cd atoms.