| The spectrum technology and its instruments with high speed，high sensitivity, highresolution and widest range of spectra has a wide range of applications in geoscience，cosmology, aerospace, millitary, high-speed physicochemical reactions, energetic mateiralresearch etc.. According to the disadvantage of low speed，insufficient vibration performanceof Fourier tramsform spectrometer with sanning mirror and low spectral resolution of staticFouirer tramsform spectrometer, and under the support by the Special Funds of the NationalNatural Science Foundation of China (Grant No.61127015)，the International S&TCooperation Projects of China (Grant No.2012DFA10680)，the paper reference thephoto-elastic modulator’s inherent advantage of high speed, high sensitivity, wide spectrumrange and anti vibration, etc. throught deep analysis of the photo-elastic modulator-basedfourier transform spectroscopy, and then a multi-reflected photo-elastic modulator-basedinterferometer structure was proposed in order to solve the problem of insufficient spectrumresolution of current photo-elastic modulator-based fourier transform spectroscopy. Based onthe multi-reflected photo-elastic modulator-based interferometer structure, we carired outrelated theoretical analysis, design and development works，and the results are as follows:1.By deep analysis of the two-dimensional symmetric vibration mode theory，we designed aphoto-elastic modulator(PEM) structure which combine with a octangle photo-elastic crystaland two piezoelectric quartz crystal. Throught the rational choice of the cut-type anddimension matching，Finally，we developed a PEM with a very pure vibration frequency and avery stable resonance by reasonable choice of the mounting and coupling method，The qualityfactor of developed PEM is5210，and the linearity of the modulation is alse fine. The researchoffered the basic guarantee for the PEM-based interferometer.2.In order to improve the spectrum resolution and consideration to sufficient luminous lfux，amulti-reflected photo-elastic modulator-based interferometer structure was first put forward.The mathematical model of interference-spectrum retrieval for the structure was established, and its modulation characteristics was analysed, then the prototype was designed andprocessed out. The laser interference-spectrum retireval experimental results shows that，theinterfere modulate frequency is50.036kHz, and the spectrum resolution reached12.9cm"1with the structure, its nearly15times compared with the original PEM-based interferometer,and the luminous flux just The luminous flux only reduced from original35%to about20%.3. The Cassegrain telescope and collimate-condense optical structure which is match to themulti-reflected PEM-based interferometer was designed, and the system of Multi-reflectedPEM-Based Fourier Transform Telemetry Spectroscopy was established finally. Then thepirnciple of veirfication tests was finished by using laser and xenon lamp. The results verifiedthe feasibility of the pirnciple of the system，and the expected result was obtained byanalysing the experiment data. |
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