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Precision stabilization of the optical frequency in a large ring laser gyroscope

机译:大型环形激光陀螺仪中光频率的精确稳定

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Pressure-induced fractional changes of 10-7 in the geometry of a large He-Ne ring laser gyroscope induce backscatter phase changes and thus a fractional pulling of the Sagnac frequency of ~5 × 10↑(-3). To counter this, the optical frequency was stabilized against an iodine-stabilized laser with a high-finesse Fabry-Perot interferometer and piezoelectric control of the ring perimeter. This scheme, although limited in principle by residual geometric asymmetry and in practice by low beam powers (10 pW), stabilized the perimeter to 2.4 nm (6 × 10↑(-10) or 300 kHz for the optical frequency) and the Sagnac frequency to 100 parts per million over several days. # 1998 Optical Society of America OCIS codes: 120.5790, 140.3560, 120.2220.
机译:压力引起的大型He-Ne环形激光陀螺仪几何形状的分数变化为10-7,引起反向散射相位变化,因此Sagnac频率的分数牵引为〜5×10↑(-3)。为了解决这个问题,使用高精良的Fabry-Perot干涉仪和环周的压电控制,使光频率对着碘稳定的激光稳定。该方案虽然原则上受到残余几何不对称性的限制,并且在实践中受到近光功率(10 pW)的限制,但仍将周界稳定在2.4 nm(光频率为6×10↑(-10)或300 kHz)和Sagnac频率在几天内达到百万分之100。 #1998美国光学学会OCIS编码:120.5790、140.3560、120.2220。

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