Patents by Inventor Peter Eskil Andersen
Peter Eskil Andersen 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: 9709873Abstract: A laser apparatus generating frequency converted light. Embodiments of the laser apparatus described herein apply a cascade of nonlinear frequency mixer for sum frequency generation (SFG) or difference frequency generation (DFG) between two frequency components of a spectrally combined laser beam with at least two spectral components originating from two respective laser sources, SFG of two frequency components beams offers up to a factor of four amplification of output power over SHG of a single laser beam.Type: GrantFiled: December 15, 2014Date of Patent: July 18, 2017Assignee: DANMARKS TEKNISKE UNIVERSITETInventors: Anders Kragh Hansen, Ole Bjarlin Jensen, Peter Eskil Andersen, Paul Michael Petersen
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Patent number: 9685755Abstract: A method of controlling beam quality and stability of a laser apparatus, the laser apparatus comprising, a diode laser (10) providing first radiation of at least a first wavelength, and a frequency conversion unit (12) configured to frequency-convert the first radiation from the diode laser and to output the frequency-converted radiation (213), the frequency-converted radiation having at least a second wavelength different from the first wavelength, the diode laser (10) comprising at least a first and a second section (222,223), a first contact (220) for injecting a first current (I1) into the first section (222), a second contact (221) for injecting a second current (I2) into the second section (223), and means for controlling a temperature of the diode laser; wherein the method comprises monitoring a first parameter indicative of the power content of a dominant lobe of the first radiation; iteratively determining a combination of respective values of the first current, the second current and the temperatureType: GrantFiled: March 13, 2012Date of Patent: June 20, 2017Assignee: DANMARKS TEKNISKE UNIVERSITETInventors: Ole Jensen Bjarlin, Peter Eskil Andersen, Paul Michael Petersen, André Müller
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Publication number: 20160320686Abstract: A laser apparatus generating frequency converted light. Embodiments of the laser apparatus described herein apply a cascade of nonlinear frequency mixers for sum frequency generation (SFG) or difference frequency generation (DFG) between two frequency components of a spectrally combined laser beam with at least two spectral components originating from two respective laser sources, SFG of two frequency components beams offers up to a factor of four amplification of output power over SHG of a single laser beam.Type: ApplicationFiled: December 15, 2014Publication date: November 3, 2016Applicant: Danmarks Tekniske UniversitetInventors: Anders Kragh Hansen, Ole Bjarlin Jensen, Peter Eskil Andersen, Paul Michael Petersen
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Publication number: 20150092801Abstract: A method of controlling beam quality and stability of a laser apparatus, the laser apparatus comprising, a diode laser (10) providing first radiation of at least a first wavelength, and a frequency conversion unit (12) configured to frequency-convert the first radiation from the diode laser and to output the frequency-converted radiation (213), the frequency-converted radiation having at least a second wavelength different from the first wavelength, the diode laser (10) comprising at least a first and a second section (222,223), a first contact (220) for injecting a first current (I1) into the first section (222), a second contact (221) for injecting a second current (I2) into the second section (223), and means for controlling a temperature of the diode laser; wherein the method comprises monitoring a first parameter indicative of the power content of a dominant lobe of the first radiation; iteratively determining a combination of respective values of the first current, the second current and the temperatureType: ApplicationFiled: March 13, 2012Publication date: April 2, 2015Inventors: Ole Bjarlin Jensen, Peter Eskil Andersen, Paul Michael Petersen, André Müller
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Patent number: 8670474Abstract: The present invention relates to an apparatus comprising a diode laser (10) providing radiation in a first wavelength interval, a radiation conversion unit (12) having an input and an output, the radiation converter configured to receive the radiation in the first wavelength interval from the diode laser at the input, the radiation conversion unit configured to convert the radiation in the first wavelength interval to radiation in a second wavelength interval and the output configured to output the converted radiation, the second wavelength interval having one end point outside the first wavelength interval.Type: GrantFiled: September 14, 2011Date of Patent: March 11, 2014Assignee: Danmarks Tekniske UniversitetInventors: Ole Bjarlin Jensen, Peter Eskil Andersen, Paul Michael Petersen
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Publication number: 20130208746Abstract: The present invention relates to an apparatus comprising a diode laser (10) providing radiation in a first wavelength interval, a radiation conversion unit (12) having an input and an output, the radiation converter configured to receive the radiation in the first wavelength interval from the diode laser at the input, the radiation conversion unit configured to convert the radiation in the first wavelength interval to radiation in a second wavelength interval and the output configured to output the converted radiation, the second wavelength interval having one end point outside the first wavelength interval.Type: ApplicationFiled: September 14, 2011Publication date: August 15, 2013Applicant: DANMARKS TEKNISKE UNIVERSITETInventors: Ole Bjarlin Jensen, Peter Eskil Andersen, Paul Michael Petersen
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Patent number: 7130060Abstract: A method and an apparatus for absolute refractive index measurements are disclosed, wherein a beam of spatially coherent laser light is directed perpendicularly on to a side of a capillary tube (12) and back reflected light is detected (16) over a range of angles (22) with respect to the incident light beam. The refractive index of a liquid contained in the capillary is determined from the angle at which a marked change in the intensity of the interference fringes of the interference pattern formed by said back reflected light is observed or from the amplitude of a low frequency component of the angular variation of the intensity of interference fringes.Type: GrantFiled: March 3, 2005Date of Patent: October 31, 2006Assignees: Texas Tech University System, Technical University of Denmark, Riso National LaboratoryInventors: Darryl J. Bornhop, Peter Eskil Andersen, Henrik Schiott Sorensen, Henrik Pranov
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Patent number: RE46937Abstract: The present invention relates to an apparatus comprising a diode laser (10) providing radiation in a first wavelength interval, a radiation conversion unit (12) having an input and an output, the radiation converter configured to receive the radiation in the first wavelength interval from the diode laser at the input, the radiation conversion unit configured to convert the radiation in the first wavelength interval to radiation in a second wavelength interval and the output configured to output the converted radiation, the second wavelength interval having one endpoint outside the first wavelength interval.Type: GrantFiled: March 8, 2016Date of Patent: July 3, 2018Assignee: DANMARKS TEKNISKE UNIVERSITETInventors: Ole Bjarlin Jensen, Peter Eskil Andersen, Paul Michael Petersen