This erratum is submitted to correct information regarding Fig. 8 of Appl. Opt. 57, E142 (2018) [CrossRef]  .

© 2018 Optical Society of America

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  1. S. O’Gorman, K. Neuhaus, S. Alexandrov, J. Hogan, C. Wilson, P. McNamara, and M. Leahy, “Characterization of an amplified piezoelectric actuator for multiple reference optical coherence tomography,” Appl. Opt. 57, E142–E146 (2018).

2018 (1)

Alexandrov, S.

Hogan, J.

Leahy, M.

McNamara, P.

Neuhaus, K.

O’Gorman, S.

Wilson, C.

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Figures (1)

Fig. 8.
Fig. 8. Comparison of the APA in TD mode and MR-OCT mode at about 950 Hz versus results of a first generation MR-OCT PZT actuator (PZT 1G) at 50 Hz [1]. The roll-off for the TD mode of the APA spans about 200 μm as specified at resonance from about 110 dB sensitivity. To allow proper placement of the PM, the scan range was reduced, by operating off resonance, which resulted in a lower sensitivity. Notwithstanding, the sensitivity of the APA matches that of a first generation PZT at three times the scan speed. Due to the large scan range at resonance it was not possible to optimally place the PM and actuation at reduced scan ranges caused reduction of sensitivity. A comparison of TD, APA and PZT 1G based MR-OCT sensitivity measurements in terms of axial range and order number. PZT 1G corresponds to the first generation of MR-OCT.