半導体リングレーザジャイロのサニャックビート検出特性の検討

抄録

In this paper, we described the detection characteristics of a semiconductor ring laser (SRL) as an optical inertial rotation sensor. First, we tried to measure the beat frequency characteristics as a function of the rotation rate, changing the loop radius for investigating the loop radius dependence on the detection sensitivity. Experimental results showed that the beat frequency caused by Sagnac effect was proportional to the loop radius and the detection sensitivity was proportional to the loop radius. For example, the sensitivity was increased _??_1.1 times by changing the radius from 12.4cm to 13.6cm. This result coincided well with expected value of 1.10. Furthermore, the beat detection characteristics depended on the oscillation condition of the SRL. From these experimental results, we could verify the possibility of a mode-locked SRL as a gyroscope for detecting stable beat note.