Patents by Inventor Harold A. Young
Harold A. Young 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: 10495703Abstract: A nonlinear terahertz (THz) spectroscopy technique uses a sample illuminated by two THz pulses separately. The illumination generates two signals BA and BB, corresponding to the first and second THz pulse, respectively, after interaction with the sample. The interaction includes excitation of at least one ESR transition in the sample. The sample is also illuminated by the two THz pulses together, with an inter-pulse delay ?, generating a third signal BAB. A nonlinear signal BNL is then derived via BNL=BAB?BA?BB. This nonlinear signal BNL can be then processed (e.g., Fourier transform) to study the properties of the sample.Type: GrantFiled: March 9, 2018Date of Patent: December 3, 2019Assignee: Massachusetts Institute of TechnologyInventors: Harold Young Hwang, Jian Lu, Yaqing Zhang, Benjamin K. Ofori-Okai, Keith A. Nelson, Xian Li
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Publication number: 20190086486Abstract: A nonlinear terahertz (THz) spectroscopy technique uses a sample illuminated by two THz pulses separately. The illumination generates two signals BA and BB, corresponding to the first and second THz pulse, respectively, after interaction with the sample. The interaction includes excitation of at least one ESR transition in the sample. The sample is also illuminated by the two THz pulses together, with an inter-pulse delay ?, generating a third signal BAB. A nonlinear signal BNL is then derived via BNL=BAB?BA?BB. This nonlinear signal BNL can be then processed (e.g., Fourier transform) to study the properties of the sample.Type: ApplicationFiled: March 9, 2018Publication date: March 21, 2019Inventors: Harold Young Hwang, Jian Lu, Yaqing Zhang, Benjamin K. Ofori-Okai, Keith A. Nelson, Xian Li
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Patent number: 9945914Abstract: A nonlinear terahertz (THz) spectroscopy technique uses a sample illuminated by two THz pulses separately. The illumination generates two signals BA and BB, corresponding to the first and second THz pulse, respectively, after interaction with the sample. The interaction includes excitation of at least one ESR transition in the sample. The sample is also illuminated by the two THz pulses together, with an inter-pulse delay ?, generating a third signal BAB. A nonlinear signal BNL is then derived via BNL=BAB?BA?BB. This nonlinear signal BNL can be then processed (e.g., Fourier transform) to study the properties of the sample.Type: GrantFiled: May 19, 2017Date of Patent: April 17, 2018Assignee: Massachusetts Institute of TechnologyInventors: Harold Young Hwang, Jian Lu, Yaqing Zhang, Benjamin K. Ofori-Okai, Keith A. Nelson, Xian Li
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Publication number: 20180100767Abstract: A radiation detection technique employs field enhancing structures and electroluminescent materials to converts incident Terahertz (THz) radiation into visible light and/or infrared light. In this technique, the field-enhancing structures, such as split ring resonators or micro-slits, enhances the electric field of incoming THz light within a local area, where the electroluminescent material is applied. The enhanced electric field then induces the electroluminescent material to emit visible and/or infrared light via electroluminescent process. A detector such as avalanche photodiode can detect and measure the emitted light. This technique allows cost-effective detection of THz radiation at room temperatures.Type: ApplicationFiled: November 7, 2017Publication date: April 12, 2018Inventors: Brandt Christopher Pein, Harold Young Hwang, Wendi Chang, Keith Adam Nelson, Vladimir Bulovic, Nathaniel C. Brandt
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Publication number: 20170336482Abstract: A nonlinear terahertz (THz) spectroscopy technique uses a sample illuminated by two THz pulses separately. The illumination generates two signals BA and BB, corresponding to the first and second THz pulse, respectively, after interaction with the sample. The interaction includes excitation of at least one ESR transition in the sample. The sample is also illuminated by the two THz pulses together, with an inter-pulse delay ?, generating a third signal BAB. A nonlinear signal BNL is then derived via BNL=BAB?BA?BB. This nonlinear signal BNL can be then processed (e.g., Fourier transform) to study the properties of the sample.Type: ApplicationFiled: May 19, 2017Publication date: November 23, 2017Inventors: Harold Young HWANG, Jian Lu, Yaqing Zhang, Benjamin K. Ofori-Okai, Keith A. Nelson, Xian Li
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Patent number: 9810578Abstract: A radiation detection technique employs field enhancing structures and electroluminescent materials to converts incident Terahertz (THz) radiation into visible light and/or infrared light. In this technique, the field-enhancing structures, such as split ring resonators or micro-slits, enhances the electric field of incoming THz light within a local area, where the electroluminescent material is applied. The enhanced electric field then induces the electroluminescent material to emit visible and/or infrared light via electroluminescent process. A detector such as avalanche photodiode can detect and measure the emitted light. This technique allows cost-effective detection of THz radiation at room temperatures.Type: GrantFiled: March 4, 2016Date of Patent: November 7, 2017Assignee: Massachusetts Institute of TechnologyInventors: Brandt Christopher Pein, Harold Young Hwang, Wendi Chang, Keith A. Nelson, Vladimir Bulovic, Nathaniel C. Brandt
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Patent number: 9709760Abstract: One example embodiment includes an optical subassembly (OSA). The OSA includes a flex circuit, an optical port, and an active optical component subassembly. The flex circuit is constructed of at least one electrically-conductive layer and at least one electrical insulator layer. The optical port defines a barrel cavity and is mechanically coupled to the flex circuit at a flex connection. The active optical component subassembly is positioned within the barrel cavity and electrically coupled to the flex circuit.Type: GrantFiled: May 9, 2016Date of Patent: July 18, 2017Assignee: FINISAR CORPORATIONInventors: Brent Stapleton, Rajeev Dwivedi, Harold Young Walker, Jr., Gary Landry
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Publication number: 20160341920Abstract: One example embodiment includes an optical subassembly (OSA). The OSA includes a flex circuit, an optical port, and an active optical component subassembly. The flex circuit is constructed of at least one electrically-conductive layer and at least one electrical insulator layer. The optical port defines a barrel cavity and is mechanically coupled to the flex circuit at a flex connection. The active optical component subassembly is positioned within the barrel cavity and electrically coupled to the flex circuit.Type: ApplicationFiled: May 9, 2016Publication date: November 24, 2016Inventors: Brent Stapleton, Rajeev Dwivedi, Harold Young Walker, JR., Gary Landry
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Publication number: 20160258807Abstract: A radiation detection technique employs field enhancing structures and electroluminescent materials to converts incident Terahertz (THz) radiation into visible light and/or infrared light. In this technique, the field-enhancing structures, such as split ring resonators or micro-slits, enhances the electric field of incoming THz light within a local area, where the electroluminescent material is applied. The enhanced electric field then induces the electroluminescent material to emit visible and/or infrared light via electroluminescent process. A detector such as avalanche photodiode can detect and measure the emitted light. This technique allows cost-effective detection of THz radiation at room temperatures.Type: ApplicationFiled: March 4, 2016Publication date: September 8, 2016Inventors: Brandt Christopher Pein, Harold Young Hwang, Wendi Chang, Keith A. Nelson, Vladimir Bulovic, Nathaniel C. Brandt
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Patent number: 9337932Abstract: One example embodiment includes an optical subassembly (OSA). The OSA includes a flex circuit, an optical port, and an active optical component subassembly. The flex circuit is constructed of at least one electrically-conductive layer and at least one electrical insulator layer. The optical port defines a barrel cavity and is mechanically coupled to the flex circuit at a flex connection. The active optical component subassembly is positioned within the barrel cavity and electrically coupled to the flex circuit.Type: GrantFiled: December 14, 2012Date of Patent: May 10, 2016Assignee: FINISAR CORPORATIONInventors: Brent Stapleton, Rajeev Dwivedi, Harold Young Walker, Jr., Gary Landry
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Patent number: 9184855Abstract: An opto-isolator is disclosed that include a vertical cavity surface emitting laser (VCSEL), a photodetector and a package enclosing the VCSEL and the photodetector. The photodetector is optically coupled to the VCSEL and configured to receive an output optical signal generated by the VCSEL.Type: GrantFiled: March 17, 2014Date of Patent: November 10, 2015Assignee: FINISAR CORPORATIONInventors: James K. Guenter, Jimmy A. Tatum, Norman Brent Stapleton, Richard L. Bell, Harold Young Walker, Jose Joaquin Aizpuru
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Patent number: 8785897Abstract: Monolithic opto-isolators and arrays of monolithic opto-isolators are disclosed. The monolithic opto-isolators are manufactured in a single semiconductor wafer where they may be tested at the wafer level before each opto-isolator is singulated from the wafer. The monolithic opto-isolators include a VCSEL monolithically produced adjacent to a photodiode where an axis of optical signal transmission of the VCSEL is substantially parallel to an axis of optical signal reception by the photodiode.Type: GrantFiled: September 5, 2007Date of Patent: July 22, 2014Assignee: Finisar CorporationInventors: Harold Young Walker, James D. Guenter, Gary Landry, Jimmy A. Tatum
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Publication number: 20140197338Abstract: An opto-isolator is disclosed that include a vertical cavity surface emitting laser (VCSEL), a photodetector and a package enclosing the VCSEL and the photodetector. The photodetector is optically coupled to the VCSEL and configured to receive an output optical signal generated by the VCSEL.Type: ApplicationFiled: March 17, 2014Publication date: July 17, 2014Applicant: Finisar CorporationInventors: James K. Guenter, Jimmy A. Tatum, Norman Brent Stapleton, Richard L. Bell, Harold Young Walker, Jose Joaquin Aizpuru
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Patent number: 8675701Abstract: The present invention relates to opto-isolators. Opto-isolators are disclosed that include a transmitter package and a vertical VCSEL disposed within the transmitter package. The opto-isolators further include a receiver package and a photodetector disposed within the receiver package. The photodetector is optically coupled to the VCSEL and configured to receive an output optical signal generated by the VCSEL. The opto-isolators further include an alignment package configured to receive the transmitter package and the receiver package. In another embodiment, opto-isolators include a VCSEL and a photodetector optically coupled to the VCSEL and configured to receive an output optical signal generated by the VCSEL. The opto-isolators further include a package enclosing both the VCSEL and the photodetector.Type: GrantFiled: November 15, 2010Date of Patent: March 18, 2014Assignee: Finisar CorporationInventors: James K. Guenter, Jimmy A. Tatum, Norman Brent Stapleton, Richard L. Bell, Harold Young Walker, Jose Joaquin Aizpuru
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Publication number: 20110057128Abstract: The present invention relates to opto-isolators. Opto-isolators are disclosed that include a transmitter package and a vertical VCSEL disposed within the transmitter package. The opto-isolators further include a receiver package and a photodetector disposed within the receiver package. The photodetector is optically coupled to the VCSEL and configured to receive an output optical signal generated by the VCSEL. The opto-isolators further include an alignment package configured to receive the transmitter package and the receiver package. In another embodiment, opto-isolators include a VCSEL and a photodetector optically coupled to the VCSEL and configured to receive an output optical signal generated by the VCSEL. The opto-isolators further include a package enclosing both the VCSEL and the photodetector.Type: ApplicationFiled: November 15, 2010Publication date: March 10, 2011Applicant: FINISAR CORPORATIONInventors: James K. Guenter, Jimmy A. Tatum, Norman Brent Stapleton, Richard L. Bell, Harold Young Walker, JR., Jose Joaquin Aizpuru
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Patent number: 7835410Abstract: The present invention relates to opto-isolators. Opto-isolators are disclosed that include a transmitter package and a vertical VCSEL disposed within the transmitter package. The opto-isolators further include a receiver package and a photodetector disposed within the receiver package. The photodetector is optically coupled to the VCSEL and configured to receive an output optical signal generated by the VCSEL. The opto-isolators further include an alignment package configured to receive the transmitter package and the receiver package. In another embodiment, opto-isolators include a VCSEL and a photodetector optically coupled to the VCSEL and configured to receive an output optical signal generated by the VCSEL. The opto-isolators further include a package enclosing both the VCSEL and the photodetector.Type: GrantFiled: February 7, 2008Date of Patent: November 16, 2010Assignee: Finisar CorporationInventors: James K. Guenter, Jimmy A. Tatum, Norman Brent Stapleton, Richard L. Bell, Harold Young Walker, Jose Joaquin Aizpuru
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Publication number: 20090059987Abstract: Monolithic opto-isolators and arrays of monolithic opto-isolators are disclosed. The monolithic opto-isolators are manufactured in a single semiconductor wafer where they may be tested at the wafer level before each opto-isolator is singulated from the wafer. The monolithic opto-isolators include a VCSEL monolithically produced adjacent to a photodiode where an axis of optical signal transmission of the VCSEL is substantially parallel to an axis of optical signal reception by the photodiode.Type: ApplicationFiled: September 5, 2007Publication date: March 5, 2009Applicant: Finisar CorporationInventors: Harold Young Walker, James K. Guenter, Gary Landry, Jimmy A. Tatum
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Publication number: 20080187013Abstract: The present invention relates to opto-isolators. Opto-isolators are disclosed that include a transmitter package and a vertical VCSEL disposed within the transmitter package. The opto-isolators further include a receiver package and a photodetector disposed within the receiver package. The photodetector is optically coupled to the VCSEL and configured to receive an output optical signal generated by the VCSEL. The opto-isolators further include an alignment package configured to receive the transmitter package and the receiver package. In another embodiment, opto-isolators include a VCSEL and a photodetector optically coupled to the VCSEL and configured to receive an output optical signal generated by the VCSEL. The opto-isolators further include a package enclosing both the VCSEL and the photodetector.Type: ApplicationFiled: February 7, 2008Publication date: August 7, 2008Applicant: Finisar CorporationInventors: James K. Guenter, Jimmy A. Tatum, Norman Brent Stapleton, Richard L. Bell, Harold Young Walker, Jose Joaquin Aizpuru
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Patent number: 7223028Abstract: Reducing transmission of electromagnetic waves through a barrel portion of an optical module. A barrel for optically coupling an optical device to an optical fiber within a fiber optic cable can include a plastic portion and a metallic shielding portion for reducing transmission through the barrel. An optical device can be coupled to the plastic portion. The metallic shielding portion can be coupled to the plastic portion and surround at least a portion of the plastic portion. The metallic shielding portion can be shaped and configured so as to reduce transmission of electromagnetic radiation through the barrel.Type: GrantFiled: September 9, 2005Date of Patent: May 29, 2007Assignee: Finisar CorporationInventor: Harold Young Walker, Jr.
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Patent number: 6465774Abstract: A versatile optical sensor method and assembly (200) is disclosed, providing cost-effective and readily adaptable optical sensor packaging while minimizing product variance, and comprising an integrally molded or single foundation piece (202) formed with a light source housing (302), a lens alignment feature (304) surrounding the light source housing, a mounting alignment feature (210), a sensor housing (206), and a barrier feature (204), further comprising a light source member (300) mounted to the foundation piece within the light source housing, a single lens member (214) enclosing the light source member and formed to engage with the lens alignment feature, and a detector member (208) mounted to the foundation piece within the sensor housing.Type: GrantFiled: June 30, 2000Date of Patent: October 15, 2002Assignee: Honeywell International Inc.Inventors: Harold Young Walker, Jr., James Kenneth Guenter