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    OCT swept laser with cavity length compensation
    1.
    发明授权
    OCT swept laser with cavity length compensation 有权

    公开(公告)号：US10161738B2

    公开(公告)日：2018-12-25

    申请号：US14144636

    申请日：2013-12-31

    Applicant: Axsun Technologies, Inc.

    Inventor： Bartley C. Johnson ,  Dale C. Flanders

    IPC: H01S3/08 ,  G01B9/02 ,  H01S5/14 ,  H01S3/083 ,  H01S3/105 ,  H01S3/106 ,  H01S5/022

    Abstract: An optical coherence tomography system utilizes an optical swept laser that has cavity length compensator that changes an optical length of the laser cavity for different optical frequencies to increase the length of the laser cavity for lower optical frequencies. Specifically, a spectral separation between longitudinal cavity modes of the laser cavity is shortened or alternatively lengthened as a passband of a cavity tuning element sweeps through a scanband of the swept optical signal. In some examples, the compensator is implemented as two gratings. In others, it is implemented as a chirped grating device.

    OCT Swept Laser with Cavity Length Compensation
    2.
    发明申请
    OCT Swept Laser with Cavity Length Compensation 审中-公开
    OCT扫描激光器具有腔长度补偿

    公开(公告)号：US20140218741A1

    公开(公告)日：2014-08-07

    申请号：US14144636

    申请日：2013-12-31

    Applicant: Axsun Technologies, Inc.

    Inventor： Bartley C. Johnson ,  Dale C. Flanders

    IPC: H01S5/10 ,  G01B9/02

    CPC classification number: G01B9/02091 ,  H01S3/08009 ,  H01S3/08013 ,  H01S3/083 ,  H01S3/105 ,  H01S3/1062 ,  H01S5/02284 ,  H01S5/141 ,  H01S5/146

    Abstract: An optical coherence tomography system utilizes an optical swept laser that has cavity length compensator that changes an optical length of the laser cavity for different optical frequencies to increase the length of the laser cavity for lower optical frequencies. Specifically, a spectral separation between longitudinal cavity modes of the laser cavity is shortened or alternatively lengthened as a passband of a cavity tuning element sweeps through a scanband of the swept optical signal. In some examples, the compensator is implemented as two gratings. In others, it is implemented as a chirped grating device.

    Abstract translation: 光学相干断层扫描系统利用具有腔长补偿器的光扫描激光器，其改变不同光频率的激光腔的光学长度，以增加用于较低光频率的激光腔的长度。 具体地说，当空腔调谐元件的通带扫过扫描光信号的扫描带时，激光腔的纵向腔模之间的光谱间隔被缩短或者可选地延长。 在一些示例中，补偿器被实现为两个光栅。 在其他方面，它被实现为啁啾光栅装置。

    Multi-speed OCT swept source with optimized k-clock
    3.
    发明申请
    Multi-speed OCT swept source with optimized k-clock 有权
    具有优化k时钟的多速OCT扫频源

    公开(公告)号：US20130271772A1

    公开(公告)日：2013-10-17

    申请号：US13650665

    申请日：2012-10-12

    Applicant: AXSUN TECHNOLOGIES, INC.

    Inventor： Bartley C. Johnson ,  Brian Goldberg ,  Dale C. Flanders

    IPC: G01B9/02

    CPC classification number: G01B9/02004 ,  G01B9/02007 ,  G01B9/02069 ,  G01B9/02091

    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.

    Abstract translation: 光学相干断层摄影系统利用光扫描源，其频率扫描至少两个不同的扫描速率。 这样，在一个具体的例子中，系统可以对样本执行大的深度扫描，然后相同的系统可以执行较短的深度高精度扫描。 为了最佳地使用对干扰信号进行采样的模数转换器，系统进一步根据所选择的扫频源的扫描速率，以不同的光频采样间隔采样干扰信号。 这允许系统以最佳方式适应不同的扫描速率。

    Integrated Dual Swept Source for OCT Medical Imaging
    8.
    发明申请
    Integrated Dual Swept Source for OCT Medical Imaging 有权
    用于OCT医疗成像的集成双扫描源

    公开(公告)号：US20140168658A1

    公开(公告)日：2014-06-19

    申请号：US14159748

    申请日：2014-01-21

    Applicant: Axsun Technologies, Inc.

    Inventor： Bartley C. Johnson ,  Walid A. Atia ,  Mark E. Kuznetsov ,  Dale C. Flanders

    IPC: G01B9/02

    CPC classification number: G01B9/02091 ,  G01B9/02004 ,  G01B9/02007 ,  G01B9/02069 ,  H01S3/1062 ,  H01S3/2383 ,  H01S5/141

    Abstract: An optical coherence analysis system comprising: a first swept source that generates a first optical signal that is tuned over a first spectral scan band, a second swept source that generates a second optical signal that is tuned over a second spectral scan band, a combiner for combining the first optical signal and the second optical signal to form a combined optical signal, an interferometer for dividing the combined optical signal between a reference arm leading to a reference reflector and a sample arm leading to a sample, and a detector system for detecting an interference signal generated from the combined optical signal from the reference arm and from the sample arm.

    Abstract translation: 一种光学相干分析系统，包括：第一扫描光源，其产生在第一光谱扫描带上调谐的第一光信号，产生在第二光谱扫描带上调谐的第二光信号的第二扫描光源， 组合第一光信号和第二光信号以形成组合的光信号;干涉仪，用于将导通到参考反射器的参考臂与通向样本的采样臂之间的组合光信号分开;以及检测器系统，用于检测 由来自参考臂和来自采样臂的组合光信号产生的干扰信号。

    Integrated optical coherence analysis system
    9.
    发明授权
    Integrated optical coherence analysis system 有权

    公开(公告)号：US11092426B2

    公开(公告)日：2021-08-17

    申请号：US15714365

    申请日：2017-09-25

    Applicant: Axsun Technologies, Inc.

    Inventor： Bartley C. Johnson ,  Dale C. Flanders

    IPC: G01B9/02 ,  A61B5/00 ,  G01N21/47

    Abstract: Optical coherence tomography (OCT) probe and system designs are disclosed that minimize the effects of mechanical movement and strain to the probe to the OCT analysis. It also concerns optical designs that are robust against noise from the OCT laser source. Also integrated OCT system-probes are included that yield compact and robust electro-opto-mechanical systems along with polarization sensitive OCT systems.

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