Acta Optica Sinica, Volume. 15, Issue 6, 767(1995)
Applications of Refractive Medium Technique in Grating Fabrication and Moire Interferometry
The wavelength of the light will shorten when it travels in the refractive medium. Based on this property, a technique for fabricating high frequency holographic gratings is developed. It makes the grating frequency breakthrough the theoretical limit of 2/λ. The refractive medium is also used in the moire interferometry. When the frequency of specimen grating is 600 lines/mm, the frequency of virtual grating will reach up to 6000 line/mm and the fringe pattern of ±5 diffraction order can be obtained with the measuring sensitivity enhanced from 0.83 μm to 0.16 μm.
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[in Chinese], [in Chinese], [in Chinese]. Applications of Refractive Medium Technique in Grating Fabrication and Moire Interferometry[J]. Acta Optica Sinica, 1995, 15(6): 767