OCM1300SS In Stock

The OCM1300SS is a state-of-the-art Swept Source Optical Coherence Tomography (SS-OCT) Imaging System from Thorlabs that incorporates a high-speed frequency swept external cavity laser. This laser has a 3dB spectral bandwidth (larger than 100nm) and an average output power of 10mW. The laser has a built-in Mach-Zehnder Interferometer that provides the frequency clock for the laser, and its main output is coupled into a fiber-based Michelson interferometer, which is split into the reference and sample arms using a broadband 50/50 coupler.

In the reference arm of the interferometer, the light is reflected back into the fiber by a stationary mirror. In the sample arm, the light is fiber-coupled into the microscope head, collimated, and then directed by the XY galvo scanning mirrors towards the sample. Axial scans (A-scans) are performed at 16 kHz, which is the sweeping frequency of the laser, and the transverse scan (B-scan) is controlled by the galvo scanning mirrors, determining the frame rate of the OCT imaging. The light is focused onto the sample surface by an objective with a long working distance.

The OCM1300SS has a long working distance objective, which provides a large clearance (>25 mm) between the optics and the sample, enabling easy handling of the sample. A dichroic mirror is inserted into the beam path to reflect the visible light from the sample onto a CCD camera that records the conventional microscope images of the sample. The system also has an aiming laser centered at 660 nm that is coupled into the sample arm of the interferometer to visually indicate the scanning trace of the laser. The sample is placed on a stage, providing XY and rotational translation. An integrated CCD camera in the microscope head provides a conventional microscopic view of the sample, aiding sample alignment. A pair of XY galvo mirrors scan the beam across the sample surface, creating 1D, 2D, or 3D images. Additionally, the OCM1300SS is compatible with an optional handheld probe that includes identical 2D and 3D imaging capabilities.

The OCM1300SS provides simultaneous multiple imaging channels for microscopic viewing of the sample. Enface images, similar to those obtained from a conventional microscope, can be acquired from the CCD channel, while cross-sectional images that show the sample's internal structure are acquired from the OCT channel. Thanks to the novel data acquisition and signal processing methods employed, real-time video-rate imaging speed has been achieved on both channels. Overall, the OCM1300SS is a highly advanced and versatile imaging system that is ideal for use in a range of research and clinical applications.