近红外偏振干涉相位补偿器的稳定性
发布时间：2019-05-22 03:02
【摘要】：相位补偿器是偏振干涉仪的核心部件,其稳定性直接影响偏振干涉光谱仪的可靠性.本文分析了相位补偿器的光程差相对灵敏度、光楔倾斜误差、斜入射角误差和温度适应性等指标,并给出相应的误差容限计算公式.研究表明:相位补偿器移动光楔沿运动方向的抗干扰能力是经典迈克尔逊干涉仪的2/Δnsinθ倍,抗倾斜能力是经典迈克尔逊干涉仪的1.75/Δn倍;当入射光以微量倾斜误差入射后,相位补偿器不会产生额外的附加光程差; 20~85℃范围内的温度变化对相位补偿器产生的最大光程差误差为1.8μm,具有很高的热稳定性;当光楔角为30°时,干涉仪在性能、尺寸和成本之间达到均衡;晶体材料的双折射率差通常远小于1,偏振干涉的稳定性更加明显.本研究为相位补偿器在更为复杂的环境中的应用奠定了基础.
[Abstract]:Phase compensator is the core component of polarization interferometer, and its stability directly affects the reliability of polarization interference spectrometer. In this paper, the relative sensitivity of optical path difference, wedges tilt error, oblique incident angle error and temperature adaptability of phase compensator are analyzed, and the corresponding error tolerance formulas are given. The results show that the anti-interference ability of the phase compensator moving wedges along the moving direction is 2 / 螖 nsin theta times higher than that of the classical Michelson interferometer, and the anti-tilt ability is 1.75 / 螖 n times of that of the classical Michelson interferometer. When the incident light is incident with a micro tilt error, the phase compensator will not produce additional optical path difference, and the maximum optical path difference error of the phase compensator is 1.8 渭 m due to the temperature change in the range of 鈮，
本文编号：2482621
[Abstract]:Phase compensator is the core component of polarization interferometer, and its stability directly affects the reliability of polarization interference spectrometer. In this paper, the relative sensitivity of optical path difference, wedges tilt error, oblique incident angle error and temperature adaptability of phase compensator are analyzed, and the corresponding error tolerance formulas are given. The results show that the anti-interference ability of the phase compensator moving wedges along the moving direction is 2 / 螖 nsin theta times higher than that of the classical Michelson interferometer, and the anti-tilt ability is 1.75 / 螖 n times of that of the classical Michelson interferometer. When the incident light is incident with a micro tilt error, the phase compensator will not produce additional optical path difference, and the maximum optical path difference error of the phase compensator is 1.8 渭 m due to the temperature change in the range of 鈮，
本文编号：2482621
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