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    OPTICALLY PUMPED TUNABLE VCSEL EMPLOYING GEOMETRIC ISOLATION
    1.
    发明申请
    OPTICALLY PUMPED TUNABLE VCSEL EMPLOYING GEOMETRIC ISOLATION 审中-公开

    公开(公告)号：WO2019217868A1

    公开(公告)日：2019-11-14

    申请号：PCT/US2019/031795

    申请日：2019-05-10

    Applicant: AXSUN TECHNOLOGIES, INC.

    Inventor： JOHNSON, Bartley C. ,  ATIA, Walid A. ,  WHITNEY, Peter S. ,  KUZNETSOV, Mark E. ,  MALLON, Edward J.

    IPC: H01S5/04 ,  H01S5/183 ,  H01S5/068

    Abstract: 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.

    FILTERED ASE SWEPT SOURCE FOR OCT MEDICAL IMAGING
    2.
    发明申请
    FILTERED ASE SWEPT SOURCE FOR OCT MEDICAL IMAGING 审中-公开
    过滤的ASE SWEPT来源用于OCT医学成像

    公开(公告)号：WO2011028999A2

    公开(公告)日：2011-03-10

    申请号：PCT/US2010/047813

    申请日：2010-09-03

    Applicant: AXSUN TECHNOLOGIES, INC. ,  FLANDERS, Dale, C. ,  ATIA, Walid A. ,  KUZNETSOV, Mark E.

    Inventor： FLANDERS, Dale, C. ,  ATIA, Walid A. ,  KUZNETSOV, Mark E.

    IPC: G01N21/47

    CPC classification number: F21V9/00 ,  G01B9/02004 ,  G01B9/02091 ,  H01S5/005 ,  H01S5/0064 ,  H01S5/0078 ,  H01S5/02216 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/5018 ,  H01S5/5036 ,  H01S5/5063 ,  H01S2301/02

    Abstract: An integrated swept wavelength optical source uses a narrowband filtered broadband signal, such as a filtered amplified spontaneous emission (ASE) signal, with an optical amplifier and tracking filter and/or self-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 possibly a second tunable Fabry Perot filter, installed on the bench, for spectrally filtering the amplified tunable signal from the amplifier. In a self-tracking arrangement, 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.

    Abstract translation: 集成扫描波长光源使用窄带滤波的宽带信号，例如经滤波放大的自发发射（ASE）信号，具有光放大器和跟踪滤波器和/或自跟踪滤波器。 该源包括安装在工作台上的用于产生宽带光源的微型光学平台，用于产生宽带光源的第一可调谐法布里珀罗滤波器，用于对来自宽带源的宽带光进行频谱滤波以产生窄带可调信号，放大器，安装在 用于放大可调信号，以及可能的第二可调法布里珀罗滤波器，安装在工作台上，用于对来自放大器的放大的可调谐信号进行频谱滤波。 在自跟踪装置中，单个可调谐滤波器都产生窄带信号并对放大的信号进行频谱滤波。 在一些实例中，提供了两级放大。 使用单台实现产生低成本的高性能系统。

    INTEGRATED SPECTROSCOPY SYSTEM
    3.
    发明申请
    INTEGRATED SPECTROSCOPY SYSTEM 审中-公开
    集成光谱系统

    公开(公告)号：WO2005038418A2

    公开(公告)日：2005-04-28

    申请号：PCT/US2004/034691

    申请日：2004-10-13

    Applicant: AXSUN TECHNOLOGIES, INC. ,  ATIA, Walid A. ,  FLANDERS, Dale C. ,  KOTIDIS, Petros ,  KUZNETSOV, Mark E.

    Inventor： ATIA, Walid A. ,  FLANDERS, Dale C. ,  KOTIDIS, Petros ,  KUZNETSOV, Mark E.

    IPC: G01J3/10

    CPC classification number: G01J3/36 ,  G01J3/0256 ,  G01J3/10 ,  G01J3/26 ,  G01N21/255

    Abstract: Integrated spectroscopy systems are disclosed. In some examples, integrated tunable detectors, using one or multiple Fabry-Perot tunable filters, are provided. Other examples use integrated tunable sources. The tunable source combines one or multiple diodes, such as superluminescent light emitting diodes (SLED), and a Fabry Perot tunable filter or etalon. The advantages associated with the use of the tunable etalon are that it can be small, relatively low power consumption device. For example, newer microelectrical mechanical system (MEMS) implementations of these devices make them the size of a chip. This increases their robustness and also their performance. In some examples, an isolator, amplifier, and/or reference system is further provided integrated.

    Abstract translation: 公开了集成光谱系统。 在一些示例中，提供了使用一个或多个法布里 - 珀罗可调谐滤波器的集成可调谐检测器。 其他示例使用集成的可调源。 可调光源结合了一个或多个二极管，例如超发光发光二极管（SLED）以及法布里珀罗可调谐滤波器或标准具。 与可调式标准具的使用相关的优点是它可以是小型的，功耗相对较低的设备。 例如，这些器件的新型微电子机械系统（MEMS）实现使它们成为芯片的尺寸。 这增加了他们的健壮性和他们的表现。 在一些示例中，进一步提供集成的隔离器，放大器和/或参考系统。

    TUNABLE VCSEL WITH COMBINED GAIN AND DBR MIRROR
    6.
    发明申请
    TUNABLE VCSEL WITH COMBINED GAIN AND DBR MIRROR 审中-公开

    公开(公告)号：WO2021030704A1

    公开(公告)日：2021-02-18

    申请号：PCT/US2020/046413

    申请日：2020-08-14

    Applicant: AXSUN TECHNOLOGIES, INC.

    Inventor： JOHNSON, Bartley C. ,  KUZNETSOV, Mark E. ,  WHITNEY, Peter S.

    IPC: H01S5/183

    Abstract: A vertical cavity surface emitting laser (VCSEL) has a shortened overall laser cavity by combining the gain section with a distributed Bragg reflector (DBR). The overall cavity length can be contracted by placing gain structures inside the DBR. This generally applies to a number of semiconductor material systems and wavelength bands, but this scheme is very well suited to the AlGaAs/GaAs material system with strained InGaAs quantum wells as a gain medium, for example.

    LASER WITH TILTED MULTI SPATIAL MODE RESONATOR TUNING ELEMENT
    7.
    发明申请
    LASER WITH TILTED MULTI SPATIAL MODE RESONATOR TUNING ELEMENT 审中-公开
    激光与倾斜多空间模式谐振器调谐元件

    公开(公告)号：WO2006104590A1

    公开(公告)日：2006-10-05

    申请号：PCT/US2006/005611

    申请日：2006-02-17

    Applicant: AXSUN TECHNOLOGIES, INC. ,  FLANDERS, Dale C. ,  KUZNETSOV, Mark E. ,  ATIA, Walid A.

    Inventor： FLANDERS, Dale C. ,  KUZNETSOV, Mark E. ,  ATIA, Walid A.

    IPC: H01S3/105 ,  H01S5/14 ,  H01S3/08 ,  H01S3/106

    CPC classification number: H01S3/08059 ,  H01S3/105 ,  H01S5/06 ,  H01S5/141 ,  H01S5/146

    Abstract: An external cavity laser has a mirror-based resonant tunable filter, such as a Fabry Perot tunable filter or Gires-Tournois interferometer tuning element, with the tunable filter being preferably used as a laser cavity mirror. A mirror-based resonant tunable filter is selected in which the spectral response in reflection has an angular dependence. A tilt scheme is used whereby by selecting an appropriate angle between the filter's nominal optical axis and the cavity optical axis, a narrowband peak spectral reflection is provided to the laser cavity. This tunable narrowband spectral reflection from the filter is used to lock and tune the laser output wavelength.

    Abstract translation: 外腔激光器具有基于镜子的共振可调谐滤波器，例如法布里·珀罗可调谐滤波器或Gires-Tournois干涉仪调谐元件，其中可调谐滤波器优选地用作激光腔镜。 选择基于镜像的谐振可调谐滤波器，其中反射中的光谱响应具有角度依赖性。 使用倾斜方案，由此通过选择滤光器的标称光轴和腔光轴之间的适当角度，向激光腔提供窄带峰值光谱反射。 来自滤波器的可调窄带光谱反射用于锁定和调谐激光输出波长。

    METHOD AND SYSTEM FOR SPECTRAL STITCHING OF TUNABLE SEMICONDUCTOR SOURCES
    9.
    发明申请
    METHOD AND SYSTEM FOR SPECTRAL STITCHING OF TUNABLE SEMICONDUCTOR SOURCES 审中-公开
    用于光电耦合半导体源的方法和系统

    公开(公告)号：WO2006039155A1

    公开(公告)日：2006-04-13

    申请号：PCT/US2005/033714

    申请日：2005-09-20

    Applicant: AXSUN TECHNOLOGIES, INC. ,  FLANDERS, Dale C. ,  ATIA, Walid A. ,  KUZNETSOV, Mark E.

    Inventor： FLANDERS, Dale C. ,  ATIA, Walid A. ,  KUZNETSOV, Mark E.

    IPC: G01J3/10

    CPC classification number: G01J3/10

    Abstract: A multi semiconductor source tunable spectroscopy system has two or more semiconductor sources for generating tunable optical signals that are tunable over different spectral bands. The system enables the combination of these tunable signals to form an output signal that is tunable over a combined band including these individual spectral bands of the separate semiconductor sources. The system further compensates for spectral roll-off associated with the semiconductor sources. Specifically, near the limits of the semiconductor sources spectral bands, the power in the tunable signal tends to degrade or decrease. The system compensates for this roll-off using drive current control, attenuators, or electronic compensation.

    Abstract translation: 多半导体源可调谐光谱系统具有用于产生可调谐光信号的两个或更多个半导体源，其可调谐的不同光谱带。 该系统使得这些可调谐信号的组合能够形成可在包括单独半导体源的这些单个频谱带的组合频带上调谐的输出信号。 该系统进一步补偿与半导体源相关联的光谱滚降。 具体来说，在半导体源光谱带的极限附近，可调信号的功率趋于降低或降低。 该系统使用驱动电流控制，衰减器或电子补偿来补偿此滚降。

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