Abstract

Techniques for high-speed delay scanning are important for low-coherence interferometry, optical coherence tomography, pump probe measurements, and other applications. We demonstrate a novel scanning delay line using a multiple-pass cavity. Differential delays are accumulated with each pass so that millimeter delays can be generated with tens of micrometer mirror displacements. With special design criteria, misalignment sensitivity can be dramatically reduced. The system is demonstrated to scan 6 m/s at 2-kHz repetition rates. Real-time optical coherence tomography imaging with 500 pixel images at four frames/s is performed. Using a Cr:forsterite laser source, we obtained axial image resolutions of 6 μm with 92-dB sensitivity.

© 2003 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
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)

Fast-Fourier-domain delay line for in vivo optical coherence tomography with a polygonal scanner

Amy L. Oldenburg, J. Joshua Reynolds, Daniel L. Marks, and Stephen A. Boppart
Appl. Opt. 42(22) 4606-4611 (2003)

Scanning delay line with a rotating-parallelogram prism for low-coherence interferometry

Linas Giniūnas, Romualdas Danielius, and Remigijus Karkockas
Appl. Opt. 38(34) 7076-7079 (1999)

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 (12)

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 (11)

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

Metrics

You do not have subscription access to this journal. Article level metrics 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