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公开(公告)号：US20220285904A1
公开(公告)日：2022-09-08
申请号：US17194852
申请日：2021-03-08
Applicant: Raytheon Company
Inventor： Fabio Di Teodoro , David A. Rockwell
Abstract: A system includes a signal seeder configured to generate a pulsed seed signal, where the signal seeder includes a master oscillator configured to generate an optical signal at a first wavelength. The system also includes a series of optical preamplifiers collectively configured to amplify the pulsed seed signal and generate an amplified signal. The system further includes a Raman fiber amplifier configured to amplify the amplified signal and generate a Raman-shifted amplified signal. The Raman fiber amplifier is configured to shift a wavelength of the amplified signal to a second wavelength different than the first wavelength during generation of the Raman-shifted amplified signal.
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2.发明申请公开(公告)号：US20180241171A1
公开(公告)日：2018-08-23
申请号：US15437418
申请日：2017-02-20
Applicant: Raytheon Company
Inventor： Vladimir V. Shkunov , David A. Rockwell
IPC: H01S3/067
CPC classification number: H01S3/06729 , G02B6/028 , H01S3/06704 , H01S3/0672 , H01S3/06754 , H01S3/08045 , H01S3/102
Abstract: An apparatus includes an optical fiber configured to transport an optical signal. The optical fiber includes a core configured to receive and amplify the optical signal. The optical fiber also includes end features optically coupled to opposite ends of the core. The core has a lower bend loss than the end features. The optical fiber further includes a cladding surrounding the core and the end features. The optical fiber is configured to confine optical power of a fundamental mode in the core. The optical fiber is also configured to allow optical power of one or more higher-order modes to leak from the core into the end features.
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3.发明申请公开(公告)号：US20220158406A1
公开(公告)日：2022-05-19
申请号：US16951860
申请日：2020-11-18
Applicant: Raytheon Company
Inventor： David A. Rockwell
Abstract: An apparatus includes at least one Raman medium configured to receive a pump beam and shift at least a portion of the pump beam into a Stokes-shifted output beam. The apparatus also includes a first lens configured to receive and focus the pump beam into the at least one Raman medium. The apparatus further includes first and second retro-lens assemblies, each including at least one prism configured to reflect beams from the at least one Raman medium back into the at least one Raman medium and multiple second lenses configured to control optical propagation of the beams entering and exiting the at least one Raman medium. Multiple pairs of lenses form multiple confocal arrangements of lenses. The pairs of lenses include the first lens and the second lenses of the retro-lens assemblies. The at least one Raman medium is optically positioned between the lenses in the confocal arrangements of lenses.
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4.发明申请公开(公告)号：US20210373266A1
公开(公告)日：2021-12-02
申请号：US16889392
申请日：2020-06-01
Applicant: Raytheon Company
Inventor： David A. Rockwell , Friedrich P. Strohkendl , Ray McVey
IPC: G02B6/44
Abstract: An apparatus includes a base having walls that define a track. The track has input and output ends and defines a coiled path that spirals inward from the input end, reaches an inflection point where a direction of curvature is reversed, and spirals outward towards the output end. The track is configured to receive and maintain a majority of an optical fiber in an at least substantially planar coiled arrangement. The apparatus also includes a first transition arm positioned at the input end and a second transition arm positioned at the output end. Each transition arm is configured to be mechanically coupled to the base and includes a groove configured to receive and maintain a portion of the optical fiber in an at least substantially straight orientation. The walls and transition arms are configured to maintain thermal contact with the optical fiber along its entire length.
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5.发明授权Method and apparatus for high-power raman beam-combining in a multimode optical fiber 有权用于多模光纤中大功率拉曼光束组合的方法和装置公开(公告)号：US09293888B2
公开(公告)日：2016-03-22
申请号：US14067751
申请日：2013-10-30
Applicant: Raytheon Company
Inventor： David A. Rockwell , Vladimir V. Shkunov
CPC classification number: H01S3/302 , G02B6/2821 , H01S3/042 , H01S3/06704 , H01S3/0672 , H01S3/06729 , H01S3/06733 , H01S3/06754 , H01S3/094007 , H01S3/09408 , H01S3/1695
Abstract: According to an embodiment of the disclosure, a system for producing a higher power laser beam is provided. The system includes an optical fiber having a length. The optical fiber is configured to receive inputs from multiple laser pumps and an input from a Stokes seed laser pump. The optical fiber has a core that is doped. The core, when viewed from a cross-section of the optical fiber, has a higher concentration of doping at a location near an axis of the optical fiber than a location further from the axis of the optical fiber. The optical fiber is also configured to convert pump power to Stokes power along the length of the optical fiber when subjected to a Stimulated Raman Scattering (SRS) process.
Abstract translation: 根据本公开的实施例，提供了一种用于产生较高功率的激光束的系统。 该系统包括具有长度的光纤。 光纤被配置为接收来自多个激光泵的输入和来自斯托克斯种子激光泵的输入。 光纤具有掺杂的芯。 当从光纤的横截面观察时，该芯在比光纤的轴线更靠近光纤的轴的位置处具有较高的掺杂浓度。 光纤还被配置为当受到受激拉曼散射（SRS）处理时，沿着光纤的长度将泵浦功率转换成斯托克斯功率。
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Patent Agency Ranking
6.发明授权Method and apparatus for temporally concentrating pump power to support generation of high peak-power pulse bursts or other time-varying laser output waveforms 有权用于时间上集中泵浦功率以支持产生高峰值功率脉冲串或其它时变激光输出波形的方法和装置公开(公告)号：US09246303B1
公开(公告)日：2016-01-26
申请号：US14530590
申请日：2014-10-31
Applicant: Raytheon Company
Inventor： David A. Rockwell , Vladimir V. Shkunov
CPC classification number: H01S3/10007 , G01S7/4814 , G01S7/484 , H01S3/06712 , H01S3/06754 , H01S3/094003 , H01S3/094042 , H01S3/094076 , H01S3/10 , H01S3/10038 , H01S3/107 , H01S3/115 , H01S3/1301 , H01S2301/02
Abstract: A method includes accumulating optical pump power in a first laser gain medium during a first period of time, where the first laser gain medium is optically located within a resonator. The method also includes providing at least some of the accumulated optical pump power as a first laser output with a feedback-controlled waveform from the first laser gain medium to a second laser gain medium during a second period of time, where the second period of time is substantially shorter than the first period of time. The method further includes generating a second laser output having a burst of laser pulses using the second laser gain medium as a power amplifier. The first and second laser outputs have higher power levels during the second period of time compared to a power level of the optical pump power during the first period of time.
Abstract translation: 一种方法包括在第一时间段内在第一激光增益介质中积聚光泵浦功率，其中第一激光增益介质光学地位于谐振器内。 该方法还包括在第二时间段期间，在第二时间段期间，将累积的光泵功率中的至少一些作为第一激光输出提供反馈控制的波形，从第一激光增益介质到第二激光增益介质， 基本上比第一时间段短。 该方法还包括使用第二激光增益介质作为功率放大器来生成具有脉冲串激光脉冲的第二激光输出。 与第一时间段内的光泵功率的功率水平相比，第一和第二激光输出在第二时段期间具有更高的功率水平。
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公开(公告)号：US12199400B2
公开(公告)日：2025-01-14
申请号：US17194852
申请日：2021-03-08
Applicant: Raytheon Company
Inventor： Fabio Di Teodoro , David A. Rockwell
Abstract: A system includes a signal seeder configured to generate a pulsed seed signal, where the signal seeder includes a master oscillator configured to generate an optical signal at a first wavelength. The system also includes a series of optical preamplifiers collectively configured to amplify the pulsed seed signal and generate an amplified signal. The system further includes a Raman fiber amplifier configured to amplify the amplified signal and generate a Raman-shifted amplified signal. The Raman fiber amplifier is configured to shift a wavelength of the amplified signal to a second wavelength different than the first wavelength during generation of the Raman-shifted amplified signal.
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公开(公告)号：US10852621B1
公开(公告)日：2020-12-01
申请号：US16503258
申请日：2019-07-03
Applicant: Raytheon Company
Inventor： Brian F. Boland , Fabio Di Teodoro , David A. Rockwell
Abstract: A system includes a waveform generator configured to generate a pulsed laser beam at a first wavelength. The system also includes at least one splitter configured to split the laser beam into multiple beams at the first wavelength. The system also includes at least one wavelength shifter configured to shift at least one of the multiple beams to another wavelength. The system also includes at least one combiner configured to combine the multiple beams into a multi-wavelength beam in which multiple wavelengths are co-aligned and propagating parallel to each other. The system also includes at least one nonlinear crystal configured to receive the multi-wavelength beam and generate multiple co-propagating beams using nonlinear wavelength conversion.
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公开(公告)号：US20170261714A1
公开(公告)日：2017-09-14
申请号：US15602519
申请日：2017-05-23
Applicant: Raytheon Company
Inventor： Ray E. McVey , David A. Rockwell
IPC: G02B6/44
Abstract: In various embodiments, an optical fiber module including an optical fiber having a first end, a second end, and a twisted portion between the first and second ends to enable the optical fiber to provide two orthogonal transverse bending degrees of freedom. The twisted portion induces an optical distortion. The module further includes a distortion compensation arrangement that is configured to at least partially compensate for the optical distortion and a housing that is configured to house at least a portion of the optical fiber including the twisted portion.
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公开(公告)号：US20150110452A1
公开(公告)日：2015-04-23
申请号：US14395698
申请日：2013-05-13
Applicant: OFS FITEL, LLC , RAYTHEON COMPANY
Inventor： David J. Digiovanni , Dennis J. Trevor , David A. Rockwell , Vladimir Shkunov
IPC: G02B6/028 , C03B37/016 , C03B37/012 , C03B37/018
CPC classification number: G02B6/028 , C03B37/01268 , C03B37/01297 , C03B37/016 , C03B37/018 , C03B2201/06 , C03B2203/12 , C03B2203/22 , H01S3/0672 , H01S3/06729 , H01S3/06737 , H01S3/08045 , H01S3/1618 , H01S3/1698
Abstract: High aspect ratio core optical fiber designs, which could be semi-guiding, including a core region having a first refractive index and a high aspect ratio elongated cross-section along a slow axis direction, are described. An internal cladding having a second refractive index sandwiches the core and acts as a fast-axis signal cladding. The core has an edge region at both of its short edges that is in contract with edge-cladding regions having a barbell shape. The refractive index of the core regions, the refractive index of the internal claddings, and the refractive index of the edge-cladding regions, are selected so as to maximize the optical power of a lowest-order mode propagating in the fiber core, and to minimize the optical power of the next-order modes in the fiber core. A process to fabricate such a high aspect ratio core fiber is also provided.
Abstract translation: 描述了可以是半导向的高纵横比纤芯光纤设计，包括沿慢轴方向具有第一折射率和高纵横比细长横截面的芯区域。 具有第二折射率的内部包层夹住芯并用作快轴信号包层。 芯具有在其短边缘处的边缘区域，其与具有杠铃形状的边缘包层区域收缩。 选择核心区域的折射率，内部包层的折射率和边缘包层区域的折射率，以使在纤维芯中传播的最低阶模的光功率最大化，并且 最小化光纤芯中下一阶模式的光功率。 还提供了制造这种高纵横比纤芯的方法。
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