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    Power monitoring approach for VCSELs and VCSEL arrays
    4.
    发明授权
    Power monitoring approach for VCSELs and VCSEL arrays 有权

    公开(公告)号：US11462884B2

    公开(公告)日：2022-10-04

    申请号：US16820376

    申请日：2020-03-16

    Applicant: Vixar, Inc.

    Inventor： Klein L. Johnson

    IPC: H01S5/0683 ,  H01S5/42 ,  H01S5/02257 ,  H01S5/02325 ,  H01S5/026 ,  H01S5/028 ,  H01S5/183 ,  H01S5/02212 ,  H01S5/34 ,  H01S5/00 ,  H01S5/02 ,  H01S5/02345

    Abstract: The present disclosure relates to an approach for monitoring the output power of a VCSEL or VCSEL array in a relatively compact, low profile package. A VCSEL device or VCSEL package of the present disclosure may generally be configured with a photodiode for monitoring output power of one or more VCSELs. In some embodiments, one or more VCSEL devices may be arranged over or on a photodetector, such that the photodetector is configured to detect light emitted through a bottom of the VCSEL. In such embodiments, the VCSEL device may have a patterned bottom metal layer and/or an etched substrate to allow light to pass below or behind the VCSEL to the photodiode. In other embodiments, a photodetector may be arranged on a submount adjacent one or more VCSELs, and may be configured to detect light reflected via a diffuser in order to monitor output power.

    POWER MONITORING APPROACH FOR VCSELS AND VCSEL ARRAYS
    5.
    发明申请
    POWER MONITORING APPROACH FOR VCSELS AND VCSEL ARRAYS 审中-公开

    公开(公告)号：US20190221997A1

    公开(公告)日：2019-07-18

    申请号：US16204156

    申请日：2018-11-29

    Applicant: Vixar Inc.

    Inventor： Klein L. Johnson ,  David Sandquist ,  Mary Brenner

    IPC: H01S5/0683 ,  H01S5/022 ,  H01S5/42

    CPC classification number: H01S5/0683 ,  H01S5/02212 ,  H01S5/02248 ,  H01S5/02276 ,  H01S5/183 ,  H01S5/18361 ,  H01S5/34 ,  H01S5/423

    Abstract: The present disclosure relates to an approach for monitoring the output power of a VCSEL or VCSEL array in a relatively compact, low profile package. A VCSEL device or VCSEL package of the present disclosure may generally be configured with a photodiode for monitoring output power of one or more VCSELs. In some embodiments, one or more VCSEL devices may be arranged over or on a photodetector, such that the photodetector is configured to detect light emitted through a bottom of the VCSEL. In such embodiments, the VCSEL device may have a patterned bottom metal layer and/or an etched substrate to allow light to pass below or behind the VCSEL to the photodiode. In other embodiments, a photodetector may be arranged on a submount adjacent one or more VCSELs, and may be configured to detect light reflected via a diffuser in order to monitor output power.

    METHOD AND APPARATUS INCLUDING IMPROVED VERTICAL-CAVITY SURFACE-EMITTING LASERS
    6.
    发明申请
    METHOD AND APPARATUS INCLUDING IMPROVED VERTICAL-CAVITY SURFACE-EMITTING LASERS 有权
    包括改进的垂直表面发射激光器的方法和装置

    公开(公告)号：US20150380901A1

    公开(公告)日：2015-12-31

    申请号：US14804367

    申请日：2015-07-21

    Applicant: Vixar Inc.

    Inventor： Mary K. Brenner ,  Klein L. Johnson ,  Matthew M. Dummer

    IPC: H01S5/183 ,  H01S5/187 ,  H01S5/343

    CPC classification number: H01S5/1833 ,  H01S5/18305 ,  H01S5/18308 ,  H01S5/18311 ,  H01S5/18313 ,  H01S5/18327 ,  H01S5/18333 ,  H01S5/18336 ,  H01S5/18341 ,  H01S5/18358 ,  H01S5/18369 ,  H01S5/18394 ,  H01S5/187 ,  H01S5/2063 ,  H01S5/34326 ,  H01S2301/166

    Abstract: VCSELs and methods having improved characteristics. In some embodiments, these include a semiconductor substrate; a vertical-cavity surface-emitting laser (VCSEL) on the substrate; a first electrical contact formed on the VCSEL; a second electrical contact formed on the substrate, wherein the VCSEL includes: a first resonating cavity having first and second mirrors, at least one of which partially transmits light incident on that mirror, wherein the first second mirrors are electrically conductive. A first layer is between the first mirror and the second mirror and has a first aperture that restricts the path of current flow. A second layer is between the first layer and the second mirror and also restricts the electrical current path. A multiple-quantum-well (MQW) structure is between the first mirror and the second mirror, wherein the first and second apertures act together to define a path geometry of the current through the MQW structure.

    Abstract translation: 具有改进特性的VCSEL和方法。 在一些实施例中，这些包括半导体衬底; 衬底上的垂直腔表面发射激光器（VCSEL）; 在VCSEL上形成的第一电接触; 形成在所述基板上的第二电触点，其中所述VCSEL包括：具有第一和第二反射镜的第一谐振腔，其中至少一个部分透射入射在所述反射镜上的光，其中所述第一第二反射镜是导电的。 第一层位于第一反射镜和第二反射镜之间，并且具有限制电流流动路径的第一孔。 第二层位于第一层和第二层之间，也限制了电流路径。 多量子阱（MQW）结构在第一反射镜和第二反射镜之间，其中第一和第二孔一起作用以限定通过MQW结构的电流的路径几何形状。

    Eye safe optical modules
    7.
    发明授权
    Eye safe optical modules 有权

    公开(公告)号：US12021349B2

    公开(公告)日：2024-06-25

    申请号：US16359879

    申请日：2019-03-20

    Applicant: Vixar, Inc.

    Inventor： Klein L. Johnson ,  David Sandquist ,  Mary K. Hibbs-Brenner

    IPC: H01S5/0683 ,  H01S5/02253 ,  H01S5/02257 ,  H01S5/02326 ,  H01S5/026 ,  H01S5/183

    CPC classification number: H01S5/0683 ,  H01S5/02253 ,  H01S5/02257 ,  H01S5/02326 ,  H01S5/0264 ,  H01S5/183

    Abstract: The present disclosure relates to a packaging approach for ensuring that high power optical modules incorporating VCSELs and VCSEL arrays remain eye safe. A VCSEL device or VCSEL package of the present disclosure may generally be configured certifying an optical device as eye safe such that the device is able to survive a single failure mode. In other embodiments, a multiple lens array is arranged above the VCSEL, which scatters the light into a wide range of angles such that a higher percentage of light will reach the photodetector located beside the VCSEL. In other embodiments according to the present disclosure, one or more methods and circuits are provided to detect and correct errors or failures caused by one or more unsafe conditions.

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