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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >The effect due to imperfect optical surface of test mass in laser interferometry absolute gravimeters
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The effect due to imperfect optical surface of test mass in laser interferometry absolute gravimeters

机译：激光干涉测量中的测试质量不完美光学表面的效果绝对重力计

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摘要

The laser wavefront is an important parameter in absolute gravimeters based on laser interferometry. It has been researched that wavefront curvature of the laser will induce a bias in laser interferometry absolute gravimeters, however, the influence induced by the surface imperfection of optical elements has not been studied. The effect induced by imperfect optical elements coupled with transverse motion and rotation of the test mass is analyzed theoretically in this work. Simulation results state that this effect introduced by imperfect corner cube whose surface quality is lambda/6 can bring a systematic error up to 1.3 mu Gal (1 mu Gal = 1 x 10(-8) m s(-2)) in a laser interferometry absolute gravimeters with typical parameters, which is large enough to be considered in mu Gal level absolute gravimeters.
机译：激光波前是基于激光干涉测量法的绝对重力计的重要参数。 已经研究了激光的波前曲率将诱导激光干涉测量中绝对重力的偏压，然而，未研究由光学元件的表面缺陷引起的影响。 在理论上，在本工作中分析了由横向运动耦合的不完美光学元件引起的效果和测试质量的旋转。 仿真结果表明，这种效果由表面质量为Lambda / 6的不完美角隅棱镜，可以在激光干涉测量中产生最高可达1.3μg的GAL（1μGAL= 1×10（-8）MS（-2））的系统误差 具有典型参数的绝对重力，其足够大，以便在MU Gal水平绝对重力计中考虑。

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