Abstract

αβ circular scanning with a large scanning field of view and high reliability can be widely applied in laser scanning imaging systems and laser processing. However, mechanical inertia of the galvanometers introduces phase delay and ultimately leads to scanning distortions in αβ circular scanning in both constant angular velocity scanning (CAVS) and constant line velocity scanning (CLVS). To compensate for the phase-delay distortions, two correction models are respectively proposed for CAVS and CLVS, which utilize phase-frequency relationships based on the galvanometer’s transfer function. Experimental results show that the presented models can effectively correct rotation distortion in CAVS and tortuosity distortion in CLVS. The correction of phase-delay distortion can improve the image quality and refine positioning accuracy in laser scanning systems.

© 2018 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Correction of image distortions in endoscopic optical coherence tomography based on two-axis scanning MEMS mirrors

Donglin Wang, Peng Liang, Sean Samuelson, Hongzhi Jia, Junshan Ma, and Huikai Xie
Biomed. Opt. Express 4(10) 2066-2077 (2013)

Distortion-free freehand-scanning OCT implemented with real-time scanning speed variance correction

Xuan Liu, Yong Huang, and Jin U. Kang
Opt. Express 20(15) 16567-16583 (2012)

High-speed phase- and group-delay scanning with a grating-based phase control delay line

G. J. Tearney, B. E. Bouma, and J. G. Fujimoto
Opt. Lett. 22(23) 1811-1813 (1997)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (9)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription