Patents by Inventor Shiva Shahin
Shiva Shahin 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: 12132296Abstract: A laser device includes a laser and a controller. The laser has an optical cavity that includes an active gain section and a phase shifter. The controller is configured to excite the active gain section to lase light out of the optical cavity. The controller is further configured to, while the light is being lased out of the optical cavity, modulate a refractive index of the phase shifter to shift an optical phase of lasing modes of the lased light to thereby reduce coherence of the lased light.Type: GrantFiled: May 14, 2021Date of Patent: October 29, 2024Assignee: Microsoft Technology Licensing, LLCInventors: Shiva Shahin, Dale Eugene Zimmerman
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Publication number: 20230283047Abstract: A broad-spectrum laser for use in a MEMS laser scanning display device is provided. In one example, the broad-spectrum laser includes a laser diode emitter with plural quantum wells each having a different spectral peak. In another example, the broad-spectrum laser includes a laser diode emitter with a tunable absorber to achieve a broadened emissions spectrum. In another example, the broad-spectrum laser includes a laser diode emitter array having plural individual emitters with different spectral peaks.Type: ApplicationFiled: May 8, 2023Publication date: September 7, 2023Applicant: Microsoft Technology Licensing, LLCInventors: Shiva SHAHIN, Dale Eugene ZIMMERMAN
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Patent number: 11682881Abstract: A broad-spectrum laser for use in a MEMS laser scanning display device is provided. In one example, the broad-spectrum laser includes a laser diode emitter with plural quantum wells each having a different spectral peak. In another example, the broad-spectrum laser includes a laser diode emitter with a tunable absorber to achieve a broadened emissions spectrum. In another example, the broad-spectrum laser includes a laser diode emitter array having plural individual emitters with different spectral peaks.Type: GrantFiled: May 28, 2020Date of Patent: June 20, 2023Assignee: Microsoft Technology Licensing, LLCInventors: Shiva Shahin, Dale Eugene Zimmerman
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Publication number: 20220393426Abstract: A laser device for use with a display including a plurality of pixels is disclosed. The laser device includes a gain section and a modulator. The gain section is electrically coupled with a first current or voltage source. The gain section is configured to selectively amplify an optical power of light reflecting within the gain section based on a first drive current or voltage supplied from the first current or voltage source to the gain section. The modulator is optically coupled with the gain section. The modulator is electrically coupled with a second current or voltage source. The modulator is configured to selectively attenuate or amplify an optical power of light received from the gain section based on a second drive current or voltage supplied from the second current or voltage source to the modulator. Light emitted from the modulator is provided to the display.Type: ApplicationFiled: June 2, 2021Publication date: December 8, 2022Applicant: Microsoft Technology Licensing, LLCInventors: Shiva SHAHIN, Dale Eugene ZIMMERMAN
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Publication number: 20220368105Abstract: A laser device includes a laser and a controller. The laser has an optical cavity that includes an active gain section and a phase shifter. The controller is configured to excite the active gain section to lase light out of the optical cavity. The controller is further configured to, while the light is being lased out of the optical cavity, modulate a refractive index of the phase shifter to shift an optical phase of lasing modes of the lased light to thereby reduce coherence of the lased light.Type: ApplicationFiled: May 14, 2021Publication date: November 17, 2022Applicant: Microsoft Technology Licensing, LLCInventors: Shiva SHAHIN, Dale Eugene ZIMMERMAN
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Patent number: 11119320Abstract: Systems and methods are provided for controlling and/or modifying operation of a red, green, blue (RGB) laser assembly for creating images in mixed-reality environments. Initially, the lasers in the RGB laser assembly operate in a low power or non-emitting state. Then, the lasers emit laser light to illuminate a pixel or a group of pixels. This illumination occurs for a period of time spanning less than 15 nanoseconds. By causing the lasers to emit laser light only during this short period of time, the resulting laser light is structured with a reduced spatial coherence level. Once the time period elapses, then the lasers again return to the non-emitting state. This process repeats for each pixel such that the lasers generate pulsed emissions. By operating the lasers with a reduced spatial coherence, undesired visual artifacts can be reduced or eliminated within the target display area.Type: GrantFiled: December 21, 2018Date of Patent: September 14, 2021Assignee: Microsoft Technology Licensing, LLCInventors: Christopher Francis Reidy, Shiva Shahin, Kai Zang, Raymond Kirk Price
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Publication number: 20210281047Abstract: A broad-spectrum laser for use in a MEMS laser scanning display device is provided. In one example, the broad-spectrum laser includes a laser diode emitter with plural quantum wells each having a different spectral peak. In another example, the broad-spectrum laser includes a laser diode emitter with a tunable absorber to achieve a broadened emissions spectrum. In another example, the broad-spectrum laser includes a laser diode emitter array having plural individual emitters with different spectral peaks.Type: ApplicationFiled: May 28, 2020Publication date: September 9, 2021Applicant: Microsoft Technology Licensing, LLCInventors: Shiva SHAHIN, Dale Eugene ZIMMERMAN, Solomon Shlomo MEHARI
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Publication number: 20210281043Abstract: A broad-spectrum laser for use in a MEMS laser scanning display device is provided. In one example, the broad-spectrum laser includes a laser diode emitter with plural quantum wells each having a different spectral peak. In another example, the broad-spectrum laser includes a laser diode emitter with a tunable absorber to achieve a broadened emissions spectrum. In another example, the broad-spectrum laser includes a laser diode emitter array having plural individual emitters with different spectral peaks.Type: ApplicationFiled: May 28, 2020Publication date: September 9, 2021Applicant: Microsoft Technology Licensing, LLCInventors: Shiva SHAHIN, Dale Eugene ZIMMERMAN
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Patent number: 10958038Abstract: An edge-emitting laser includes an active gain section and a reflector section optically coupled to the active gain section. The active gain section is configured to amplify an optical power of light across a wavelength range. The reflector section is configured to selectively reflect light of a selected wavelength within the wavelength range. The selected wavelength is tunable via high-frequency index modulation of the reflector section. The active gain section and the reflector section collectively form an optical cavity configured to lase coherent light in the selected wavelength.Type: GrantFiled: May 20, 2019Date of Patent: March 23, 2021Assignee: Microsoft Technology Licensing, LLCInventors: Shiva Shahin, Dale Eugene Zimmerman
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Patent number: 10923884Abstract: A system includes a waveguide and an edge-emitting laser. The edge-emitting laser is configured to lase coherent light into the waveguide. The edge-emitting laser includes an optical cavity having an active gain section and a passive section. The active gain section is configured to amplify an optical power of light reflecting within the optical cavity. The passive section increases a functional length of the optical cavity such that a total length of the optical cavity reduces fringe interference of the coherent light propagating through the waveguide.Type: GrantFiled: May 15, 2019Date of Patent: February 16, 2021Assignee: Microsoft Technology Licensing, LLCInventors: Shiva Shahin, Dale Eugene Zimmerman
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Publication number: 20200373734Abstract: An edge-emitting laser includes an active gain section and a reflector section optically coupled to the active gain section. The active gain section is configured to amplify an optical power of light across a wavelength range. The reflector section is configured to selectively reflect light of a selected wavelength within the wavelength range. The selected wavelength is tunable via high-frequency index modulation of the reflector section. The active gain section and the reflector section collectively form an optical cavity configured to lase coherent light in the selected wavelength.Type: ApplicationFiled: May 20, 2019Publication date: November 26, 2020Applicant: Microsoft Technology Licensing, LLCInventors: Shiva SHAHIN, Dale Eugene ZIMMERMAN
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Publication number: 20200366065Abstract: A system includes a waveguide and an edge-emitting laser. The edge-emitting laser is configured to lase coherent light into the waveguide. The edge-emitting laser includes an optical cavity having an active gain section and a passive section. The active gain section is configured to amplify an optical power of light reflecting within the optical cavity. The passive section increases a functional length of the optical cavity such that a total length of the optical cavity reduces fringe interference of the coherent light propagating through the waveguide.Type: ApplicationFiled: May 15, 2019Publication date: November 19, 2020Applicant: Microsoft Technology Licensing, LLCInventors: Shiva SHAHIN, Dale Eugene ZIMMERMAN
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Patent number: 10770865Abstract: An edge-emitting laser including a substrate, a lower power optical cavity located on the substrate and a higher power optical cavity located on the substrate adjacent the lower power optical cavity. The lower power optical cavity includes a first active gain section having a first length. The higher power optical cavity includes a second active gain section having a second length greater than the first length.Type: GrantFiled: May 10, 2019Date of Patent: September 8, 2020Assignee: Microsoft Technology Licensing, LLCInventors: Shiva Shahin, Dale Eugene Zimmerman
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Publication number: 20190372306Abstract: Systems and methods are provided for controlling and/or modifying operation of a red, green, blue (RGB) laser assembly for creating images in mixed-reality environments. Initially, the lasers in the RGB laser assembly operate in a low power or non-emitting state. Then, the lasers emit laser light to illuminate a pixel or a group of pixels. This illumination occurs for a period of time spanning less than 15 nanoseconds. By causing the lasers to emit laser light only during this short period of time, the resulting laser light is structured with a reduced spatial coherence level. Once the time period elapses, then the lasers again return to the non-emitting state. This process repeats for each pixel such that the lasers generate pulsed emissions. By operating the lasers with a reduced spatial coherence, undesired visual artifacts can be reduced or eliminated within the target display area.Type: ApplicationFiled: December 21, 2018Publication date: December 5, 2019Inventors: Christopher Francis Reidy, Shiva Shahin, Kai Zang, Raymond Kirk Price