Acta Optica Sinica, Volume. 8, Issue 1, 51(1988)
Precise opto-heterodyne measurement of small plane angle
This paper discussed an opto-heterodyne technique for small-plane-angle measurement with a frequency-stabilized longitudinal Zeeman laser as the light source. It employs the phase measuring interferometric technique. Its angle-measuring sensitivity can reach 0.002", exceeding that of the other plane-angle-measuring techniques.
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LIN YAO, ZHOU ZHIYAO, WANG RUNWEN. Precise opto-heterodyne measurement of small plane angle[J]. Acta Optica Sinica, 1988, 8(1): 51