Acta Optica Sinica, Volume. 13, Issue 3, 262(1993)
The measurement methods of beat-wave interference fringe fraction for two-wavelenth beat-wave length interferometry
The several measurement methods of beat-wave interference fringe fraction used in beat-wave interferometer are described. The principle of the beat-wave phase-locked type of aiming technique is proposed. The three principle schemes of the beat-wave interferometer are presented. The measurement accuracy and some other problems are discussed and compared.
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[in Chinese], [in Chinese]. The measurement methods of beat-wave interference fringe fraction for two-wavelenth beat-wave length interferometry[J]. Acta Optica Sinica, 1993, 13(3): 262