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24 条记录 (耗时 0.018 秒)

    Optically pumped tunable VCSEL employing geometric isolation
    1.
    发明授权
    Optically pumped tunable VCSEL employing geometric isolation 有权

    公开(公告)号：US10951007B2

    公开(公告)日：2021-03-16

    申请号：US16409272

    申请日：2019-05-10

    申请人： Axsun Technologies, Inc.

    发明人： Bartley C. Johnson ,  Walid A. Atia ,  Peter S. Whitney ,  Mark E. Kuznetsov ,  Edward J. Mallon

    IPC分类号： H01S5/183 ,  H01S5/04 ,  H01S5/50 ,  H01S5/022 ,  H01S5/22 ,  H01S5/30 ,  H01S5/343

    摘要： An optically pumped tunable VCSEL swept source module has a VCSEL and a pump, which produces light to pump the VSCEL, wherein the pump is geometrically isolated from the VCSEL. In different embodiments, the pump is geometrically isolated by defocusing light from the pump in front of the VCSEL, behind the VCSEL, and/or by coupling the light from the pump at an angle with respect to the VCSEL. In the last case, angle is usually less than 88 degrees. There are further strategies for attacking pump noise problems. Pump feedback can be reduced through (1) Faraday isolation and (2) geometric isolation. Single frequency pump lasers (Distributed feedback lasers (DFB), distributed Bragg reflector lasers (DBR), Fabry-Perot (FP) lasers, discrete mode lasers, volume Bragg grating (VBG) stabilized lasers can eliminate wavelength jitter and amplitude noise that accompanies mode hopping.

    Integrated dual swept source for OCT medical imaging
    3.
    发明授权
    Integrated dual swept source for OCT medical imaging 有权
    用于OCT医疗成像的集成双扫扫源

    公开(公告)号：US09593934B2

    公开(公告)日：2017-03-14

    申请号：US14175158

    申请日：2014-02-07

    申请人： Axsun Technologies, Inc.

    发明人： Brian Goldberg ,  Dale C. Flanders ,  Walid A. Atia ,  Bartley C. Johnson ,  Mark E. Kuznetsov

    IPC分类号： G01B9/02 ,  G01N21/47 ,  H01S5/14 ,  A61B5/00 ,  H01S5/022 ,  H01S5/40

    CPC分类号： G01B9/02091 ,  A61B5/0066 ,  A61B5/0075 ,  G01N21/4795 ,  H01S5/02216 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/141 ,  H01S5/4012 ,  H01S5/4062 ,  H01S5/4068

    摘要： 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 for 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. In embodiments, the swept sources are tunable lasers that have shared laser cavities.

    摘要翻译： 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，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的干涉仪，以及用于检测 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。 在实施例中，扫描光源是具有共享激光腔的可调激光器。

    Integrated Dual Swept Source for OCT Medical Imaging
    4.
    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：US20140152997A1

    公开(公告)日：2014-06-05

    申请号：US14175158

    申请日：2014-02-07

    申请人： Axsun Technologies, Inc.

    发明人： Brian Goldberg ,  Dale C. Flanders ,  Walid A. Atia ,  Bartley C. Johnson ,  Mark E. Kuznetsov

    IPC分类号： G01B9/02

    CPC分类号： G01B9/02091 ,  A61B5/0066 ,  A61B5/0075 ,  G01N21/4795 ,  H01S5/02216 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/141 ,  H01S5/4012 ,  H01S5/4062 ,  H01S5/4068

    摘要： 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 for 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. In embodiments, the swept sources are tunable lasers that have shared laser cavities.

    摘要翻译： 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，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的干涉仪，以及用于检测 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。 在实施例中，扫描光源是具有共享激光腔的可调激光器。

    Optical Coherence Tomography Laser with Integrated Clock
    5.
    发明申请
    Optical Coherence Tomography Laser with Integrated Clock 有权
    光学相干层析成像激光器与集成时钟

    公开(公告)号：US20140016135A1

    公开(公告)日：2014-01-16

    申请号：US14028873

    申请日：2013-09-17

    申请人： Axsun Technologies, Inc.

    发明人： Dale C. Flanders ,  Walid A. Atia ,  Bartley C. Johnson ,  Mark E. Kuznetsov ,  Carlos R. Melendez

    IPC分类号： G01B9/02

    CPC分类号： G01B9/02091 ,  G01B9/02004 ,  G01B9/02044 ,  G01B9/02059 ,  G01B9/02069 ,  G01B2290/25 ,  H01S3/08013 ,  H01S3/08054 ,  H01S3/1067 ,  H01S5/02248 ,  H01S5/02415 ,  H01S5/068 ,  H01S5/141 ,  H01S5/146

    摘要： A frequency swept laser source for TEFD-OCT imaging includes an integrated clock subsystem on the optical bench with the laser source. The clock subsystem generates frequency clock signals as the optical signal is tuned over the scan band. Preferably the laser source further includes a cavity extender in its optical cavity between a tunable filter and gain medium to increase an optical distance between the tunable filter and the gain medium in order to control the location of laser intensity pattern noise. The laser also includes a fiber stub that allows for control over the cavity length while also controlling birefringence in the cavity.

    摘要翻译： 用于TEFD-OCT成像的频率扫描激光源包括具有激光源的光学台上的集成时钟子系统。 当光信号在扫描带上调谐时，时钟子系统产生频率时钟信号。 优选地，激光源还包括在可调谐滤波器和增益介质之间的光腔中的腔体延长器，以增加可调谐滤波器和增益介质之间的光学距离，以便控制激光强度图案噪声的位置。 该激光器还包括一个纤维短截线，其允许控制腔体长度，同时还控制空腔中的双折射。

    Filtered ASE swept source for OCT medical imaging
    7.
    发明授权
    Filtered ASE swept source for OCT medical imaging 有权

    公开(公告)号：US09696471B2

    公开(公告)日：2017-07-04

    申请号：US13847616

    申请日：2013-03-20

    申请人： Axsun Technologies, Inc.

    发明人： Dale C. Flanders ,  Walid A. Atia ,  Mark E. Kuznetsov

    IPC分类号： G01B9/02 ,  G02B5/22 ,  G01J3/10 ,  G01J3/26 ,  G01N21/47 ,  G01J3/433

    CPC分类号： G02B5/22 ,  G01B9/02004 ,  G01B9/02091 ,  G01J3/10 ,  G01J3/26 ,  G01J3/4338 ,  G01N21/4795

    摘要： An integrated swept wavelength optical source uses a filtered ASE signal with an optical amplifier and tracking filter. This source comprises a micro optical bench, a source for generating broadband light, a first tunable Fabry Perot filter, installed on the bench, for spectrally filtering the broadband light from the broadband source to generate a narrowband tunable signal, an amplifier, installed on the bench, for amplifying the tunable signal, and a second tunable Fabry Perot filter, installed on the bench, for spectrally filtering the amplified tunable signal from the amplifier. A self-tracking arrangement is also possible where a single tunable filter both generates the narrowband signal and spectrally filters the amplified signal. In some examples, two-stage amplification is provided. The use of a single bench implementation yields a low cost high performance system. For example, polarization control between components is no longer necessary.