Patents by Inventor James Yonghong Guo
James Yonghong Guo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10014951Abstract: The invention relates to wavelength stabilization and wavelength multiplexing of multiple high-power multi-mode semiconductor lasers. The lasers are wavelength-stabilized in free space using multi-peak output reflectors to wavelength-lock their output at different reflection wavelength in dependence on operating conditions, to reduce output reflectivity required for locking and increase output power. Selecting output reflectors having different non-overlapping sets of reflectivity peaks for different lasers or groups of lasers enables combining their output by wavelength multiplexing.Type: GrantFiled: June 3, 2016Date of Patent: July 3, 2018Assignee: Lumentum Operations LLCInventors: James Yonghong Guo, Lei Xu
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Publication number: 20180145480Abstract: A laser diode assembly is disclosed, in which a transmissive reflector is used to redirect the laser beam upwards or to turn or rotate the laser beam. The reflector has at least one Brewster transmissive surface and at least one total internal reflection surface. Several total internal reflection surfaces rotated with respect to one another may be used in a single reflector to redirect and rotate the laser diode beam.Type: ApplicationFiled: January 18, 2018Publication date: May 24, 2018Inventors: Vincent V. WONG, James Yonghong Guo, Kong Weng Lee, Jack Xu
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Patent number: 9729853Abstract: The use of one or more angled or curved and diverging light pipes or reflectors placed in a light source's, e.g. diode's, emission path at appropriate distances, angles and divergence, such that a diode's emission spot size is modified and or redirected from the diode's natural emission path to alternative planes at angle to the diode's natural emission path so that a diode emission safe spot size can be achieved on any plane at angle to the original diode natural emission path at minimum distances from the diode's point of emission.Type: GrantFiled: February 1, 2013Date of Patent: August 8, 2017Assignee: Lumentum Operations LLCInventors: Bryed Billerbeck, James Yonghong Guo, An-Chun Tien, Vincent V. Wong, Ferdinand Mendoza
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Publication number: 20170063468Abstract: The invention relates to wavelength stabilization and wavelength multiplexing of multiple high-power multi-mode semiconductor lasers. The lasers are wavelength-stabilized in free space using multi-peak output reflectors to wavelength-lock their output at different reflection wavelength in dependence on operating conditions, to reduce output reflectivity required for locking and increase output power. Selecting output reflectors having different non-overlapping sets of reflectivity peaks for different lasers or groups of lasers enables combining their output by wavelength multiplexing.Type: ApplicationFiled: June 3, 2016Publication date: March 2, 2017Inventors: James Yonghong GUO, Lei XU
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Publication number: 20160359296Abstract: A laser diode assembly is disclosed, in which a transmissive reflector is used to redirect the laser beam upwards or to turn or rotate the laser beam. The reflector has at least one Brewster transmissive surface and at least one total internal reflection surface. Several total internal reflection surfaces rotated with respect to one another may be used in a single reflector to redirect and rotate the laser diode beam.Type: ApplicationFiled: June 5, 2015Publication date: December 8, 2016Inventors: Vincent V. WONG, James Yonghong Guo, Kong Weng Lee, Jack Xu
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Publication number: 20160119063Abstract: The disclosure relates to wavelength stabilization and wavelength multiplexing of multiple high-power multi-mode semiconductor lasers. The lasers are wavelength-stabilized in free space using multi-peak output reflectors to wavelength-lock their output at different reflection wavelength in dependence on operating conditions, to reduce output reflectivity required for locking and increase output power. Selecting output reflectors having different non-overlapping sets of reflectivity peaks for different lasers or groups of lasers enables combining their output by wavelength multiplexing.Type: ApplicationFiled: October 24, 2014Publication date: April 28, 2016Inventors: James Yonghong GUO, Lei Xu
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Patent number: 9209605Abstract: A laser diode subassembly is disclosed, in which dichroic reflectors are disposed sequentially one after another forming an array or stack, each reflector having a sequential array index. An array of laser diode emitters is provided, each emitter having a sequential array index. Individual reflectors of the array redirect laser sub-beams from individual laser diode emitters having same array indices, to propagate via dichroic reflectors having higher array indices, so as to form a combined optical beam. A common partial reflector may be used for the laser diode emitters instead of individual wavelength selective reflectors for each laser diode emitter.Type: GrantFiled: January 23, 2015Date of Patent: December 8, 2015Assignee: Lumentum Operations LLCInventors: James Yonghong Guo, Lei Xu
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Patent number: 9065237Abstract: Multi-mode diode emitters are stacked in a staircase formation to provide a spatially-multiplexed output. Improved coupling efficiency is achieved by providing tilted collimated output beams that determine an effective step height of the stepped structure. Since the effective step height is dependent on the tilt angle, a variable number of emitters can be used inside packages having a same physical step height, while still attaining high coupling efficiency.Type: GrantFiled: December 7, 2011Date of Patent: June 23, 2015Assignee: JDS Uniphase CorporationInventors: James Yonghong Guo, Jay A. Skidmore, Lei Xu, Jane Cheng
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Patent number: 8727567Abstract: A reflector is mounted to an outer perimeter of a heat sink holding at least one edge-emitting semiconductor chip, for example a laser diode. The reflector has a shape suitable for gathering light emitted by the laser diodes and redirecting the light in an upward direction away from the heat sink. The reflector can be overmolded onto the heat sink. The reflector can operate by total internal reflection, so that no additional reflector coating step is required. Injection molding of the reflectors onto the heat sink holding the laser diodes enables mass production of powerful yet inexpensive laser light sources.Type: GrantFiled: December 18, 2012Date of Patent: May 20, 2014Assignee: JDS Uniphase CorporationInventors: An-Chun Tien, James Yonghong Guo, Vincent V. Wong, Jay A. Skidmore
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Patent number: 8537873Abstract: The present invention relates to the packaging of high power laser(s) in a surface mount technology (SMT) configuration at low-cost using wafer-scale processing. A reflective sidewall is used to redirect the output emission from edge-emitting lasers through an optical element (e.g., a diffuser, lens, etc.). A common electrical pad centered inside the package provides p-side connection to multiple laser diodes (i.e. for power scalability). Thick plating (e.g. 75 um to 125 um) with a heat and electrically conductive material, e.g. copper, on a raised bonding area of a substrate provides good heat dissipation and spreading to the substrate layer during operation. The composite CTE of the substrate layer, e.g. AlN, and the heat/electrical conductive plating, e.g. Cu, substantially matches well with the laser substrates, e.g. GaAs-based, without the requirement for an additional submount.Type: GrantFiled: July 20, 2012Date of Patent: September 17, 2013Assignee: JDS Uniphase CorporationInventors: Kong Weng Lee, James Yonghong Guo, Vincent V. Wong, Jay A. Skidmore, An-Chun Tien
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Publication number: 20130201289Abstract: The use of one or more angled or curved and diverging light pipes or reflectors placed in a light source's, e.g. diode's, emission path at appropriate distances, angles and divergence, such that a diode's emission spot size is modified and or redirected from the diode's natural emission path to alternative planes at angle to the diode's natural emission path so that a diode emission safe spot size can be achieved on any plane at angle to the original diode natural emission path at minimum distances from the diode's point of emission.Type: ApplicationFiled: February 1, 2013Publication date: August 8, 2013Inventors: Bryed Billerbeck, James Yonghong Guo, An-Chun Tien, Vincent V. Wong, Ferdinand Mendoza
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Publication number: 20130148684Abstract: Multi-mode diode emitters are stacked in a staircase formation to provide a spatially-mulitplexed output. Improved coupling efficiency is achieved by providing tilted collimated output beams that determine an effective step height of the stepped structure. Since the effective step height is dependent on the tilt angle, a variable number of emitters can be used inside packages having a same physical step height, while still attaining high coupling efficiency.Type: ApplicationFiled: December 7, 2011Publication date: June 13, 2013Applicant: JDS Uniphase CorporationInventors: James Yonghong GUO, Jay A. Skidmore, Lei Xu, Jane Cheng
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Patent number: 8437086Abstract: The invention relates to sources of optical radiation wherein polarized radiation from first and second rows of light emitters is first collimated and combined into two combined beam using first and second rows of collimating and beam re-directing elements, respectively, and then polarization multiplexed to form a polarization-multiplexed output beam. In order to reduce the footprint, emitters of the first and second emitter rows are disposed in an interleaved, staggered arrangement, and the second row of collimating and beam re-directing elements is disposed in a space between the first emitter row and the first row of collimating and beam re-directing elements.Type: GrantFiled: March 31, 2011Date of Patent: May 7, 2013Assignee: JDS Uniphase CorporationInventors: Jihua Du, James Yonghong Guo, Lei Xu, Richard L. Duesterberg, Jay A. Skidmore
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Patent number: 8427749Abstract: The invention relates to sources of optical radiation wherein polarized radiation from first and second rows of light emitters is first collimated and combined into two combined beam using first and second rows of collimating and beam re-directing elements, respectively, and then polarization multiplexed to form a polarization-multiplexed output beam. In order to reduce the footprint, emitters of the first and second emitter rows are disposed in an interleaved, staggered arrangement, and the second row of collimating and beam re-directing elements is disposed in a space between the first emitter row and the first row of collimating and beam re-directing elements.Type: GrantFiled: June 30, 2010Date of Patent: April 23, 2013Assignee: JDS Uniphase CorporationInventors: Jihua Du, James Yonghong Guo, Lei Xu, Richard L. Duesterberg, Jay A. Skidmore
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Publication number: 20130022069Abstract: The present invention relates to the packaging of high power laser(s) in a surface mount technology (SMT) configuration at low-cost using wafer-scale processing. A reflective sidewall is used to redirect the output emission from edge-emitting lasers through an optical element (e.g., a diffuser, lens, etc.). A common electrical pad centered inside the package provides p-side connection to multiple laser diodes (i.e. for power scalability). Thick plating (e.g. 75 um to 125 um) with a heat and electrically conductive material, e.g. copper, on a raised bonding area of a substrate provides good heat dissipation and spreading to the substrate layer during operation. The composite CTE of the substrate layer, e.g. AlN, and the heat/electrical conductive plating, e.g. Cu, substantially matches well with the laser substrates, e.g. GaAs-based, without the requirement for an additional submount.Type: ApplicationFiled: July 20, 2012Publication date: January 24, 2013Inventors: Kong Weng Lee, James Yonghong Guo, Vincent V. Wong, Jay A. Skidmore, An-Chun Tien
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Publication number: 20120002293Abstract: The invention relates to sources of optical radiation wherein polarized radiation from first and second rows of light emitters is first collimated and combined into two combined beam using first and second rows of collimating and beam re-directing elements, respectively, and then polarization multiplexed to form a polarization-multiplexed output beam. In order to reduce the footprint, emitters of the first and second emitter rows are disposed in an interleaved, staggered arrangement, and the second row of collimating and beam re-directing elements is disposed in a space between the first emitter row and the first row of collimating and beam re-directing elements.Type: ApplicationFiled: June 30, 2010Publication date: January 5, 2012Inventors: Jihua Du, James Yonghong Guo, Lei Xu, Richard L. Duesterberg, Jay A. Skidmore
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Publication number: 20120002395Abstract: The invention relates to sources of optical radiation wherein polarized radiation from first and second rows of light emitters is first collimated and combined into two combined beam using first and second rows of collimating and beam re-directing elements, respectively, and then polarization multiplexed to form a polarization-multiplexed output beam. In order to reduce the footprint, emitters of the first and second emitter rows are disposed in an interleaved, staggered arrangement, and the second row of collimating and beam re-directing elements is disposed in a space between the first emitter row and the first row of collimating and beam re-directing elements.Type: ApplicationFiled: March 31, 2011Publication date: January 5, 2012Applicant: JDS Uniphase CorporationInventors: Jihua Du, James Yonghong Guo, Lei Xu, Richard L. Duesterberg, Jay A. Skidmore