THORLABS OCTP Series User Manual page 36

OCTP Series Scanner Chapter 5: Description
5.3. Intended Use
The OCTP scanner is designed for simple and rapid installation. Its mechanical features enable compatibility
with Thorlabs' SM1 lens tube and 30 mm cage system standards, permitting simple and easy system
modifications that improve and optimize the performance. The OCTP scanner also allows integration of
additional components for adaptation to a specific application.
Please contact Thorlabs' support to determine compatibility with other parts you wish to use.
5.3.1. Realization
The basic optical layout of the OCTP scanner in common path layout is illustrated below in Figure 38.
Figure 38 Optical Layout of the OCTP
The broadband light output from an FC/APC-terminated fiber is collimated and directed into a cube beamsplitter.
The beamsplitter divides the broadband light into a sample arm and a reference arm, similar to a Michelson
interferometer.
The sample arm is propagated onto two galvanometric mirrors to allow for scanning in two axes. The scan
objective then focuses the beam into the sample. Back-scattered and back-reflected light is collected by the
scan objective and travels back into the fiber. The light propagated into the reference arm is reflected back into
the fiber. The interference between the beams in these two arms generates the OCT signal.
Page 32 MTN003971-D02