laser technique time delay adjusting core energy energy meter
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摘要: 为了解决弹光调制干涉具中因高频振动产生的热量引起的谐振频率漂移问题,根据相似与模化理论,建立了弹光调制干涉具热动态模型,得到了弹光调制干涉具中干涉具谐振频率、干涉具温度和外界驱动信号之间的非线性函数关系,并最终推导出了反馈电流和反馈电流相对于驱动电压的相位的关系、干涉具中温度随时间的变化率和谐振频率随时间的变化率方程,以及得出了干涉具热动态模型的频率稳定状态方程。结果表明,根据热反馈机制,必须采用锁相跟踪原理,时刻保持驱动频率与干涉具谐振频率一致,才能保证干涉具工作的稳定性。Abstract: In order to solve the problem of the resonant frequency drift caused by the heat produced by high-frequency vibration in a photoelastic modulator interferometer,its thermal regime model was built based on similarity and modeling theory.The nonlinear function relationship among resonant frequency,temperature of the interferometer and outside drive signal was obtained.Finally,the thermal feedback current,the phase relationship between the feedback current and driving voltage,the change rates of the temperature and resonant frequency with time were deduced and the state equation of frequency stability of the interferometer thermal regime model was obtained.Analysis shows that according to thermal feedback mechanism,phase locked tracking theory must be used to maintain drive frequency consistent with resonant frequency of the interferometer all the time so that the interferometer can work stably.
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[1] HU M,WANG T Y,QIAO Z F,et al.Research on VOC concentration detection by photoelastic modulation infrared spectrum absorption method[J].Spectroscopy and Spectral Analysis,2011,31(12):3232-3234(in Chinese).
[2] HU J M,ZENG A J,WANG X C.Method to measure phase retardation of wave plate based on photoelastic modulation[J].Acta Optica Sinica,2006,26(11):1681-1686(in Chinese).
[3] ZHOU J.Mueller matrix analysis of photoelastic modulator[J].Journal of Changshu College,2011,15(4):19-22(in Chinese).
[4] SHIGEO H.A versatile photoelastic-modulator driver/controller[J].Japanese Journal of Applied Physics,1989,28(4):720-722.
[5] MA T F,ZHANG Ch,ZHANG Zh T,et al.Frequency-temperature characteristics of quartz lateral-field-excitation piezoelectic sensors[J].Instrument Technique and Sensor,2009,25(3):25-27(in Chinese).
[6] MA J,WANG Zh B,CHEN Y H.Influences of frequency-temperature coefficient of elastic-optic crystal on elastic-optic modulation system[J].Semiconductor Optoelectronics,2012,33(3):390-392(in Chinese).
[7] DINEL D J, DAVIS A, HANCOCK B,et al.Dual-photoelastic-modulator-based polarimetric imaging concept for aerosol remote sensing[J].Applied Optics,2007,46(35):8428-8445.
[8] BUICAN T N.High retardation-amplitude photoelastic modulator:US,7764415 B2[P].2010-07-27.
[9] MAEDA S,NAKAE K,SHINDO Y J.Evaluation of the performance of photoelastic modulator by admittance parameter measurements[J].The Japan Society of Applied Physics,2003,42(7A):4546-4551.
[10] BUICAN T N.Birefringence interferometers for ultra-high-speed FT spectrometry and hyperspectral imaging,Ⅰ.Dynamic model of the resonant photoelastic modulator[J].Vibrational Spectrosc-opy,2006,42(1):51-58.
[11] LING W P.Photoelastic modulator system:US,20080304133A1[P].2008-12-11.
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