Patents by Inventor Marcos Dantus
Marcos Dantus 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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Publication number: 20160169806Abstract: A laser system and method employing stimulated Raman scattering using a main laser pulse and a delayed replica reference pulse are provided. A further aspect calculates stimulated Raman loss and stimulated Raman gain from a reflected laser light scatter collected from a fabric or paper specimen. In another aspect, a laser system receives a low energy portion of a spectrum of main and reference laser pulses with a first photodetector, receives a higher energy portion of the spectrum of the main and reference pulses with a second photodetector, and uses a controller to determine a Raman active phonon transfer of energy manifested as an increase in the reflected laser scatter in a lower energy portion of the spectrum and a decrease in a higher energy portion of the spectrum. In yet another aspect, the controller automatically determines if a hazardous particle or substance such as an explosive, is present on a specimen.Type: ApplicationFiled: July 31, 2014Publication date: June 16, 2016Applicant: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITYInventors: Marcos DANTUS, Marshal Thomas BREMER
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Patent number: 9202678Abstract: One aspect of the system provides the use of a laser with a mass spectrometer. Another aspect of the present application employs a laser emitting a pulse of less than one picosecond duration into an ion-trap mass spectrometer. In yet another aspect of the present application, a femtosecond laser beam pulse is emitted upon an ionized specimen to remove at least one electron therefrom.Type: GrantFiled: November 13, 2009Date of Patent: December 1, 2015Assignee: Board of Trustees of Michigan State UniversityInventors: Marcos Dantus, Gavin Reid
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Publication number: 20150157209Abstract: A biomedical apparatus employing laser light is provided. In another aspect, laser light is unfocused when it is emitted upon in vivo or exposed internal tissue during surgery. A further aspect provides a visual and/or audio warning to the surgeon during surgery if a cancer cell is detected, within one minute and more preferably within five seconds, of emission of laser light upon the targeted tissue.Type: ApplicationFiled: July 3, 2013Publication date: June 11, 2015Applicant: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITYInventor: Marcos Dantus
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Patent number: 9048632Abstract: A laser apparatus includes a fiber oscillator. In another aspect, an Ytterbium (Yb) doped fiber is employed. Another aspect provides an unamplified laser pulse emitted from an Yb fiber oscillator having a repetition rate less than 5 MHz and a pulse energy greater than 100 nJ. In still an additional aspect, a flexible Yb fiber has a length greater than 1 m which is capable of being looped with an outside loop diameter less than 150 mm. Another aspect provides for a fiber oscillator with passive optical fiber lengths of at least 10 meters, and more preferably more than 100 meters while having repetition rates less than 4 MHz.Type: GrantFiled: March 15, 2013Date of Patent: June 2, 2015Assignee: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITYInventors: Marcos Dantus, Bai Nie
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Patent number: 9018562Abstract: A laser material processing system and method are provided. A further aspect of the present invention employs a laser for micromachining. In another aspect of the present invention, the system uses a hollow waveguide. In another aspect of the present invention, a laser beam pulse is given broad bandwidth for workpiece modification.Type: GrantFiled: April 9, 2007Date of Patent: April 28, 2015Assignee: Board of Trustees of Michigan State UniversityInventor: Marcos Dantus
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Patent number: 8861075Abstract: A high peak intensity laser amplification system and the method therein implemented are provided. In a first aspect of the invention, the laser system includes at least one optical member (27) operably introducing a phase function into a high peak intensity laser pulse (25). A further aspect includes introducing destructive interference in an unchirped laser pulse prior to amplification and reconstructive interference in the output laser pulse after amplification. Dynamic pulse shaping is employed in another aspect of the present invention.Type: GrantFiled: February 26, 2010Date of Patent: October 14, 2014Assignee: Board of Trustees of Michigan State UniversityInventors: Marcos Dantus, Vadim V. Lozovoy
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Patent number: 8675699Abstract: A laser pulse synthesis system is provided. A further aspect of the present system uses a phase-only modulator to measure ultrashort laser pulses. An additional aspect achieves interferences between split subpulses even though the subpulses have different frequencies. Yet another aspect of a laser system employs multi-comb phase shaping of a laser pulse. In another aspect, a laser system includes pulse characterization and arbitrary or variable waveform generation through spectral phase comb shaping.Type: GrantFiled: January 22, 2010Date of Patent: March 18, 2014Assignee: Board of Trustees of Michigan State UniversityInventors: Marcos Dantus, Vadim V. Lozovoy
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Publication number: 20140058367Abstract: An adaptive laser system for ophthalmic use is provided. In another aspect, a relatively inexpensive laser is employed. In another aspect of the present system, non-linear optical imaging uses multiphoton fluorescences and/or second harmonic generation, to create three-dimensional mapping of a portion of the eye in combination with automated feedback to assist with a surgical operation. In a further aspect of the present system, the patient interface uses laser induced markings or indicia to aid in focusing and/or calibration. Still another aspect employs temporal focusing of the laser beam pulse.Type: ApplicationFiled: September 24, 2013Publication date: February 27, 2014Applicant: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITYInventor: Marcos Dantus
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Patent number: 8633437Abstract: A laser system is provided which selectively excites Raman active vibrations in molecules. In another aspect of the present invention, the system includes a laser, pulse shaper and detection device. A further aspect of the present invention employs a femtosecond laser and binary pulse shaping (BPS). Still another aspect of the present invention uses a laser beam pulse, a pulse shaper and remote sensing.Type: GrantFiled: February 14, 2006Date of Patent: January 21, 2014Assignee: Board of Trustees of Michigan State UniversityInventors: Marcos Dantus, Vadim V. Lozovoy
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Patent number: 8630322Abstract: A laser system capable of phase and/or amplitude manipulation of the output pulses is provided. In another aspect, a laser system includes a self-referenced pulse characterization method. A further aspect uses spectral amplitude modulation to isolate spectral bands by scanning one or more transmission slits or openings, and measuring and/or calculating the first derivative of a phase (group delay) across an entire spectrum. A single-beam pulse shaper-based technique for spectrometer-free measurement and compensation of laser pulse phase distortions is also provided in an additional aspect.Type: GrantFiled: February 28, 2011Date of Patent: January 14, 2014Assignee: Board of Trustees of Michigan State UniversityInventors: Marcos Dantus, Vadim Lozovoy
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Patent number: 8618470Abstract: Enantiomers are characterized, identified, synthesized and/or modified with a shaped laser pulse. In another aspect of the present invention, binary shaping and circular polarization are employed with a laser pulse. A further aspect of the present invention provides a quarter-wave plate in combination with one or more pulse shapers.Type: GrantFiled: November 29, 2006Date of Patent: December 31, 2013Assignee: Board of Trustees of Michigan State UniversityInventors: Marcos Dantus, Vadim V. Lozovoy
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Patent number: 8311069Abstract: A direct ultrashort laser system is provided. In another aspect of the present invention, a method of measuring laser pulse phase distortions is performed without requiring an adaptive pulse shaper or interferometry. In yet another aspect of the present invention, a system, a method of operating, a control system, and a set of programmable computer software instructions perform Multiphoton Intrapulse Interference Phase Scan processes, calculations, characterization and/or correction without requiring an adaptive pulse shaper.Type: GrantFiled: December 19, 2008Date of Patent: November 13, 2012Assignee: Board of Trustees of Michigan State UniversityInventors: Marcos Dantus, Vadim V. Lozovoy, Bingwei Wu
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Patent number: 8300669Abstract: A control system and apparatus for use with an ultra-fast laser is provided. In another aspect of the present invention, the apparatus includes a laser, pulse shaper, detection device and control system. A multiphoton intrapulse interference method is used to characterize the spectral phase of laser pulses and to compensate any distortions in an additional aspect of the present invention. In another aspect of the present invention, a system employs multiphoton intrapulse interference phase scan. Furthermore, another aspect of the present invention locates a pulse shaper and/or MIIPS unit between a laser oscillator and an output of a laser amplifier.Type: GrantFiled: June 23, 2009Date of Patent: October 30, 2012Assignee: Board of Trustees of Michigan State UniversityInventors: Marcos Dantus, Igor Pastirk, Vadim Lozovoy, Matthew Comstock
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Patent number: 8265110Abstract: A laser and monitoring system is provided. In another aspect of the present invention, the system includes a laser, pulse shaper and detection device. A further aspect of the present invention employs a femtosecond laser and binary pulse shaping (BPS). Still another aspect of the present invention uses a laser beam pulse, a pulse shaper and a SHG crystal. In yet another aspect of the present invention, a multiphoton intrapulse interference phase scan (hereinafter “MIIPS”) method is used to characterize the spectral phase of femtosecond laser pulses and to correct them. A further aspect of the system of the present invention is employed to monitor environmental chemicals and biological agents, including toxins, explosives, and diseases.Type: GrantFiled: June 22, 2009Date of Patent: September 11, 2012Assignee: Board of Trustees Operating Michigan State UniversityInventors: Marcos Dantus, Vadim V. Lozovoy, Matthew Comstock
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Patent number: 8208504Abstract: A laser system using ultrashort laser pulses is provided. In another aspect of the present invention, the system includes a laser, pulse shaper and detection device. A further aspect of the present invention employs a femtosecond laser and a spectrometer. Still another aspect of the present invention uses a laser beam pulse, a pulse shaper and a SHG crystal. In yet another aspect of the present invention, a multiphoton intrapulse interference phase scan system and method characterize the spectral phase of femtosecond laser pulses. Fiber optic communication systems, photodynamic therapy and pulse characterization tests use the laser system with additional aspects of the present invention.Type: GrantFiled: November 4, 2008Date of Patent: June 26, 2012Assignee: Board of Trustees Operation Michigan State UniversityInventors: Marcos Dantus, Vadim V. Lozovoy
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Patent number: 8208505Abstract: A laser system provides harmonic generation in a laser beam pulse. In another aspect of the present invention, a laser operably remits a laser pulse, a gaseous optical medium operably creates third or greater harmonic generation in the pulse, and a controller characterizes and compensates for distortions in the pulse. A further aspect of the present invention employs multiple optical media arranged to cause cascading harmonic generations in a laser pulse.Type: GrantFiled: May 14, 2009Date of Patent: June 26, 2012Assignee: Board of Trustees of Michigan State UniversityInventors: Marcos Dantus, Don Ahmasi Harris, Vadim V. Lozovoy
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Publication number: 20120147911Abstract: A direct ultrashort laser system is provided. In another aspect of the present invention, a method of measuring laser pulse phase distortions is performed without requiring an adaptive pulse shaper or interferometry. In yet another aspect of the present invention, a system, a method of operating, a control system, and a set of programmable computer software instructions perform Multi photon Intrapulse Interference Phase Scan processes, calculations, characterization and/or correction without requiring an adaptive pulse shaper.Type: ApplicationFiled: December 19, 2008Publication date: June 14, 2012Applicant: Board of Trustees of Michigan State UniversityInventors: Marcos Dantus, Vadim V. Lozovoy, Bingwei Wu
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Patent number: 8185209Abstract: In a method for visualizing an object under conditions of low ambient light, the object to be visualized is exposed to incident electromagnetic radiation having a wavelength greater than what can normally be seen by the naked eye. Light reflected from the object is then perceived with an enhanced eye. The enhanced eye contains an up-conversion material optically coupled to the photoreceptors. Up-conversion materials absorb in the infrared and luminesce in the visible. Particles containing such materials are delivered to the eye where they are optically coupled to the retina or photoreceptor cells and nearby tissues. There they provide in-situ up-conversion of infrared frequencies (from about 700 to about 11,000 nm) to the otherwise unaided eye.Type: GrantFiled: December 17, 2003Date of Patent: May 22, 2012Assignee: Board of Trustees Operating Michigan State UniversityInventor: Marcos Dantus
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Publication number: 20120076504Abstract: A high peak intensity laser amplification system and the method therein implemented are provided. In a first aspect of the invention, the laser system includes at least one optical member (27) operably introducing a phase function into a high peak intensity laser pulse (25). A further aspect includes introducing destructive interference in an unchirped laser pulse prior to amplification and reconstructive interference in the output laser pulse after amplification. Dynamic pulse shaping is employed in another aspect of the present invention.Type: ApplicationFiled: February 26, 2010Publication date: March 29, 2012Applicant: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITYInventors: Marcos Dantus, Vadim V. Lozovoy
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Publication number: 20110211600Abstract: A laser system capable of phase and/or amplitude manipulation of the output pulses is provided. In another aspect, a laser system includes a self-referenced pulse characterization method. A further aspect uses spectral amplitude modulation to isolate spectral bands by scanning one or more transmission slits or openings, and measuring and/or calculating the first derivative of a phase (group delay) across an entire spectrum. A single-beam pulse shaper-based technique for spectrometer-free measurement and compensation of laser pulse phase distortions is also provided in an additional aspect.Type: ApplicationFiled: February 28, 2011Publication date: September 1, 2011Applicant: Board of Trustees of Michigan State UniversityInventors: Marcos Dantus, Vadim Lozovoy