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    Optically pumped tunable VCSEL employing geometric isolation
    61.
    发明申请
    Optically pumped tunable VCSEL employing geometric isolation 有权

    公开(公告)号：US20210175683A1

    公开(公告)日：2021-06-10

    申请号：US17147691

    申请日：2021-01-13

    Applicant: EXCELITAS TECHNOLOGIES CORP.

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

    IPC: H01S5/04 ,  H01S5/183 ,  H01S5/50

    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.

    Low-loss and fast acting solid-state breaker
    62.
    发明授权
    Low-loss and fast acting solid-state breaker 有权

    公开(公告)号：US10985546B2

    公开(公告)日：2021-04-20

    申请号：US16252651

    申请日：2019-01-20

    Applicant: Excelitas Technologies Corp.

    Inventor： John E. Waldron ,  Kenneth Brandmier ,  James K. Azotea

    IPC: H02H3/033 ,  H02H3/08 ,  H02H3/20 ,  H03K17/0416 ,  H02H3/027 ,  H02H3/44 ,  H03K17/567

    Abstract: A circuit including a source, a load, and an isolation circuit for controllably isolating the load from the source. The isolation circuit is disposed between the source and the load. The isolation circuit includes at least one insulated-gate bipolar transistor (IGBT) and at least one gate turn-off thyristor (GTO) in parallel with the insulated-gate bipolar transistor. When no fault condition exists, the GTO is configured to be ON to couple the load to the source. When a fault condition exists, the at least one IGBT is configured to turn ON. After the at least one IGBT turns ON, the at least one GTO is configured to turn OFF. After a predetermined amount of time, reflecting the post fabrication alteration to the GTO's minority carrier lifetime (e.g. electron irradiation), after the at least one GTO turns OFF, the at least one IGBT is configured to turn OFF. Alternatively, the circuit is used as an inverter switch, where at the command to turn ON is supplied, the at least one IGBT is turned ON, followed by the at least one SGTO. When commanded to turn OFF the at least one SGTO is turned OFF followed by the at least one IGBT. This alternative configuration allows the robust, controllable switching speeds of IGBTs and the superior conduction efficiency of SGTOs. The two configurations mentioned above utilize a wide range of SGTO performance, thus the ability to control the SGTOs turn-off speed by reducing its minority carrier lifetime after the device is processed is of large importance. The efficiency of all uses of the circuit can be optimized with the judicious selection of SGTO minority carrier lifetime and the ratio of active area between the SGTO and IGBT devices. In all cases there is a balance between the time the circuit can achieve hard turn-off without current commutation, the conduction efficiency of the circuit and the maximum amount of controllable current. In all cases both the conduction efficiency of the circuit is higher than an IGBT-only based circuit, and the switching performance is higher than a GTO-only based circuit.

    Sealed laser diode heat sink module
    65.
    发明授权
    Sealed laser diode heat sink module 有权

    公开(公告)号：US10003171B1

    公开(公告)日：2018-06-19

    申请号：US15711350

    申请日：2017-09-21

    Applicant: Excelitas Technologies Corp.

    Inventor： Scott Carpenter ,  Wai Choi

    IPC: H01S3/04 ,  H01S5/024 ,  H01S5/042 ,  F21V29/70

    CPC classification number: H01S5/02469 ,  F21V29/70 ,  H01S3/0405 ,  H01S5/02 ,  H01S5/02276 ,  H01S5/02288 ,  H01S5/0425

    Abstract: A sealable laser diode heat sink module for a laser diode includes an anode assembly and a cathode assembly having a cathode base and a cathode connector plate. The anode assembly includes an anode base configured to house the laser diode and the cathode base within a sealable cavity recessed into the anode base. The anode base has a cathode base opening configured to receive the cathode connector plate. An anode connector plate extends from the anode base. An anode current path passes through the laser diode and the anode connector plate via direct connections through the anode base. A cathode current path passes through the cathode connector plate passes via direct connections through the cathode base. The anode base is configured to dissipate heat from the laser diode.

    Load sharing between parallel connected power converters
    66.
    发明授权
    Load sharing between parallel connected power converters 有权

    公开(公告)号：US09960676B1

    公开(公告)日：2018-05-01

    申请号：US15340067

    申请日：2016-11-01

    Applicant: Excelitas Technologies Corp.

    Inventor： Neil Symonds

    IPC: H02M3/158 ,  H02M3/157 ,  H02M1/00 ,  H02M3/156

    CPC classification number: H02M3/156 ,  H02J1/10 ,  H02M3/1584 ,  H02M3/285

    Abstract: A power supply system includes multiple power converters, each having an input and an output. The outputs of the power converters are connected together in parallel to produce a single system output. There is a shared command bus that is coupled to each one of the power converters. A control loop in (associated with) a designated one of the power converters is operable to generate a current command signal to be output onto the shared command bus. All of the parallel connected power converters in the power supply system are configured to receive the current command signal from the shared command bus and to adjust an amount of electrical current being supplied by that power converter in response to the current command signal.

    Electrodeless single CW laser driven xenon lamp
    67.
    发明授权
    Electrodeless single CW laser driven xenon lamp 有权
    无电极单CW激光氙灯

    公开(公告)号：US09576785B2

    公开(公告)日：2017-02-21

    申请号：US14712304

    申请日：2015-05-14

    Applicant: Excelitas Technologies Corp.

    Inventor： Rudi Blondia

    IPC: H01J7/24 ,  H01J61/54 ,  H01J65/04 ,  H01J61/02 ,  G03F7/20

    CPC classification number: H01J61/54 ,  G03F7/70008 ,  G03F7/70016 ,  G03F7/70025 ,  G03F7/70033 ,  G03F7/7005 ,  H01J61/025 ,  H01J61/16 ,  H01J61/30 ,  H01J65/04

    Abstract: An ignition facilitated electrodeless sealed high intensity illumination device is disclosed. The device is configured to receive a laser beam from a continuous wave (CW) laser light source. A sealed chamber is configured to contain an ionizable medium. The chamber has an ingress window disposed within a wall of a chamber interior surface configured to admit the laser beam into the chamber, a plasma sustaining region, and a high intensity light egress window configured to emit high intensity light from the chamber. A path of the CW laser beam from the laser light source through the ingress window to a focal region within the chamber is direct. The ingress window is configured to focus the laser beam to within a predetermined volume, and the plasma is configured to be ignited by the CW laser beam, optionally by heating of a non-electrode ignition agent located entirely within the chamber.

    Abstract translation: 公开了一种点火促进无电极密封高强度照明装置。 该装置被配置为从连续波（CW）激光光源接收激光束。 密封室配置成容纳可电离介质。 腔室具有设置在腔体内表面的壁内的进入窗口，构造成允许激光束进入腔室，等离子体维持区域和被配置为从腔室发射高强度光的高强度光出射窗口。 来自激光光源的CW激光束通过进入窗口到室内的焦点区域的路径是直接的。 入口窗口被配置为将激光束聚焦在预定体积内，并且等离子体被配置为被CW激光束点燃，可选地通过加热位于室内的非电极点火剂。

    Sparker for flash lamp
    68.
    发明授权
    Sparker for flash lamp 有权
    闪光灯闪光灯

    公开(公告)号：US09373494B1

    公开(公告)日：2016-06-21

    申请号：US14739206

    申请日：2015-06-15

    Applicant: Excelitas Technologies Corp.

    Inventor： David Vidal

    IPC: H01J17/18 ,  H01J61/90 ,  H01J61/16

    CPC classification number: H01J61/90 ,  H01J9/30 ,  H01J9/34 ,  H01J61/16 ,  H01J61/363 ,  H01J61/366

    Abstract: A base assembly for a flash lamp is disclosed. The base assembly has an integrated sparker and includes an electrically conductive header having a surface that defines a boundary of a flash chamber for the flash lamp. There is an opening in the surface of the electrically conductive header and an electrically conductive lead within the opening. The electrically conductive lead is electrically insulated from surrounding portions of the electrically conductive header. A distal end of the electrically conductive lead is substantially flush with the surface of the electrically conductive header.

    Abstract translation: 公开了一种用于闪光灯的基座组件。 基座组件具有集成的火花塞并且包括具有限定闪光灯的闪光室的边界的表面的导电头部。 在导电集管的表面有开口，在开口内有一个导电引线。 导电引线与导电集管的周围部分电绝缘。 导电引线的远端基本上与导电集管的表面齐平。

    Laser Driven Sealed Beam Lamp
    69.
    发明申请
    Laser Driven Sealed Beam Lamp 有权
    激光驱动密封光束灯

    公开(公告)号：US20150332908A1

    公开(公告)日：2015-11-19

    申请号：US14712196

    申请日：2015-05-14

    Applicant: Excelitas Technologies Corp.

    Inventor： Rudi Blondia

    IPC: H01J61/02 ,  H01J61/30 ,  H01J61/16

    CPC classification number: H01J61/025 ,  H01J61/16 ,  H01J61/24 ,  H01J61/26 ,  H01J61/30 ,  H01J61/33 ,  H01J61/35 ,  H01J61/361 ,  H01J61/54 ,  H01J61/547 ,  H01J65/04 ,  H05G2/008

    Abstract: A method and apparatus for a sealed high intensity illumination device are disclosed. The device is configured to receive a laser beam from a laser light source. The device has a sealed chamber configured to contain an ionizable medium. The chamber has a substantially flat ingress window disposed within a wall of the integral reflective chamber interior surface configured to admit the laser beam into the chamber, a plasma sustaining region, a plasma ignition region, and a high intensity light egress window configured to emit high intensity light from the chamber. The chamber has an integral reflective chamber interior surface configured to reflect high intensity light from the plasma sustaining region to the egress window. There is a direct path of the laser beam from the laser light source through the lens and ingress window to the lens focal region.

    Abstract translation: 公开了一种用于密封高强度照明装置的方法和装置。 该装置被配置为从激光光源接收激光束。 该装置具有被配置为容纳可电离介质的密封室。 腔室具有设置在整体反射室内表面的壁内的基本上平坦的入口窗口，该内壁被构造成允许激光束进入腔室，等离子体维持区域，等离子体点火区域和被配置为发射高的高强度出射窗口 来自室的强度光。 腔室具有整体的反射室内表面，其被构造成将来自等离子体维持区域的高强度光反射到出口窗口。 来自激光光源的激光束通过透镜和入口窗口到达透镜焦点区域的直接路径。

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