WU Dong, ZHU Ri-hong, CHEN Lei, HE Yong, WANG Qing, GAO Zhi-shan. Improvement of PZT phase shifter in vibration-resistant phase-shifting interferometer[J]. Editorial Office of Optics and Precision Engineering, 2003,(6): 567-571
WU Dong, ZHU Ri-hong, CHEN Lei, HE Yong, WANG Qing, GAO Zhi-shan. Improvement of PZT phase shifter in vibration-resistant phase-shifting interferometer[J]. Editorial Office of Optics and Precision Engineering, 2003,(6): 567-571DOI:
The structure of an ordinary piezoelectric transducer (PZT) used as an optical phase-shifter is optimized using the active vibration-resistance techniques for phase-shifting interferometer to improve its mechanical properties with adequate micro-displacement. As the kernel part of a mechano-electronic feedback system of the vibration-resistant interferometer
the optimized PZT works as an optical phase-modulator and a vibration-compensated controller at the same time. On-line testing shows the new structure of PZT phase shifter has gained a time response above 1 000 Hz at amplitude of (/2
and a displacement of about 6 μm.
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