MULTI-SPEED OCT SWEPT SOURCE WITH OPTIMIZED K-CLOCK

    公开(公告)号:CA2869750C

    公开(公告)日:2020-03-24

    申请号:CA2869750

    申请日:2013-04-08

    Applicant: AXSUN TECH INC

    Abstract: An optical coherence tomography system utilizes an optical swept source that frequency scans at least two different sweep rates. In this way, the system can perform large depth scans of the sample and then the same system can perform shorter depth high precision scans, in one specific example. In order to optimally use the analog to digital converter that samples the interference signal, the system further samples the interference signals at different optical frequency sampling intervals depending upon the selected sweep rates of the optical swept source. This allows the system to adapt to different sweep rates in an optimal fashion.

    OCT SYSTEM WITH BONDED MEMS TUNABLE MIRROR VCSEL SWEPT SOURCE

    公开(公告)号:CA2891979A1

    公开(公告)日:2014-06-26

    申请号:CA2891979

    申请日:2013-12-20

    Applicant: AXSUN TECH INC

    Abstract: A microelectromechanical systems (MEMS)-tunable vertical-cavity surfaceemitting laser (VCSEL) in which the MEMS mirror is a bonded to the active region. This allows for a separate electrostatic cavity, that is outside the laser's optical resonant cavity. Moreover, the use of this cavity configuration allows the MEMS mirror to be tuned by pulling the mirror away from the active region. This reduces the risk of snap down. Moreover, since the MEMS mirror is now bonded to the active region, much wider latitude is available in the technologies that are used to fabricate the MEMS mirror. This is preferably deployed as a swept source in an optical coherence tomography (OCT) system.

    MULTI-SPEED OCT SWEPT SOURCE WITH OPTIMIZED K-CLOCK

    公开(公告)号:CA2869750A1

    公开(公告)日:2013-10-17

    申请号:CA2869750

    申请日:2013-04-08

    Applicant: AXSUN TECH INC

    Abstract: An optical coherence tomography system utilizes an optical swept source that frequency scans at least two different sweep rates. In this way, the system can perform large depth scans of the sample and then the same system can perform shorter depth high precision scans, in one specific example. In order to optimally use the analog to digital converter that samples the interference signal, the system further samples the interference signals at different optical frequency sampling intervals depending upon the selected sweep rates of the optical swept source. This allows the system to adapt to different sweep rates in an optimal fashion.

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