Patents by Inventor Ravinder K. Jain
Ravinder K. Jain 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).
-
Patent number: 9966728Abstract: Improved Raman Fiber Laser (RFL) generators may include a mid-infrared fiber, e.g., a fiber comprising a tellurite glass, a chalcogenide glass, a fluoride glass, or similar material. A phase-shifted fiber Bragg grating may be inscribed in the fiber. A pump laser generator may be coupled with the fiber in order to supply a pump laser to the fiber. When stimulated by the pump laser, the RFL generator may emit an output laser having a mid-infrared wavelength. A tuner may be used to tune the output laser.Type: GrantFiled: January 19, 2017Date of Patent: May 8, 2018Assignee: STC.UNMInventor: Ravinder K. Jain
-
Publication number: 20170207599Abstract: Improved Raman Fiber Laser (RFL) generators may include a mid-infrared fiber, e.g., a fiber comprising a tellurite glass, a chalcogenide glass, a fluoride glass, or similar material. A phase-shifted fiber Bragg grating may be inscribed in the fiber. A pump laser generator may be coupled with the fiber in order to supply a pump laser to the fiber. When stimulated by the pump laser, the RFL generator may emit an output laser having a mid-infrared wavelength. A tuner may be used to tune the output laser.Type: ApplicationFiled: January 19, 2017Publication date: July 20, 2017Inventor: Ravinder K. Jain
-
Patent number: 9285535Abstract: An optical resonator made from an elongated fiber having a proximal and distal end. A sphere is created on the distal end by locating the distal end in cylindrically symmetrical heating zone along a centerline. For some embodiments, the distal end is rapidly cooled by allowing it to retract away from the heating zone along the centerline during the formation and solidification of the molten microsphere. The resulting optical resonator has an intrinsic quality factor greater than 106 over the 2.0 to 3.2 ?m MIR wavelength range.Type: GrantFiled: August 6, 2013Date of Patent: March 15, 2016Assignee: STC.UNMInventors: Ravinder K. Jain, Mani Hossein-Zadeh
-
Publication number: 20140290311Abstract: An optical resonator made from an elongated fiber having a proximal and distal end. A sphere is created on the distal end by locating the distal end in cylindrically symmetrical heating zone along a centerline. For some embodiments, the distal end is rapidly cooled by allowing it to retract away from the heating zone along the centerline during the formation and solidification of the molten microsphere. The resulting optical resonator has an intrinsic quality factor greater than 106 over the 2.0 to 3.2 ?m MIR wavelength range.Type: ApplicationFiled: August 6, 2013Publication date: October 2, 2014Inventors: Ravinder K. Jain, Mani Hossein-Zadeh
-
Patent number: 6660532Abstract: The invention provides a reagentless assay kit for analyte in a sample comprising a modular affinity assembly including at least one sensor unit comprising a ligand having binding affinity for the analyte (affinity module) operatively associated with a reporter probe (reporter module) responsive to changes in the sensor unit induced by analyte/receptor complex formation by transduction of a characteristic detectable signal. Assays employing the modular assembly are also provided.Type: GrantFiled: December 16, 1999Date of Patent: December 9, 2003Assignee: Science & Technology Corporation @ UNMInventors: Gabriel P. Lopez, Larry A. Sklar, Philip Hampton, Leonard Tender, Kimberly Opperman, Emmanuel Rabinovich, Ravinder K. Jain, Juchao Yan
-
Patent number: 6570893Abstract: Continuously tunable and precisely wavelength-switchable fiber lasers combine fiber Bragg gratings and the transmissive filtering properties of high finesse fiber Fabry-Perot filters. This laser arrangement adapts to multiple wavelength ranges based on the selections of fiber Bragg grating and gain medium and their arrangement to create a wavelength-modulatable and simultaneously rapidly wavelength-switchable narrow linewidth all-fiber laser design. This laser arrangement further results in narrow-linewidth outputs with fast switching speeds between the selected wavelengths.Type: GrantFiled: November 24, 1999Date of Patent: May 27, 2003Assignee: Science & Technology Corporation @ UNMInventors: Nathaniel C. Libatique, Ravinder K. Jain
-
Patent number: 6542664Abstract: An improved highly doped waveguide is provided which comprises a waveguide employing an Er dopant and Pr sensitizer ions. The present invention also provides a method of efficient coupling from an optical source into a waveguide using a rotated optical element.Type: GrantFiled: October 19, 2001Date of Patent: April 1, 2003Assignee: Science & Technology Corporation @ UNMInventors: Balaji Srinivasan, Ravinder K. Jain, Jason David Tafoya
-
Publication number: 20020057874Abstract: An improved highly doped waveguide is provided which comprises a waveguide employing an Er dopant and Pr sensitizer ions. The present invention also provides a method of efficient coupling from an optical source into a waveguide using a rotated optical element.Type: ApplicationFiled: October 19, 2001Publication date: May 16, 2002Inventors: Balaji Srinivasan, Ravinder K. Jain, Jason David Tafoya
-
Patent number: 6385377Abstract: The present invention provides a method of fabricating an electro-optically active fiber segment comprising the steps, in any order, of inducing a second-order nonlinearity in the fiber segment, and placing a portion of the fiber segment between and in contact with two electrodes. Also, the present invention provides an electro-optically active fiber segment comprising a second-order nonlinearity induced within the fiber segment, and a portion of the fiber segment being between and in contact with a first electrode and a second electrode.Type: GrantFiled: March 31, 2000Date of Patent: May 7, 2002Assignee: University of New MexicoInventors: Steven R. J. Brueck, Xiang-Cun Long, Ravinder K. Jain
-
Patent number: 6360040Abstract: An improved highly doped waveguide is provided which comprises a waveguide employing an Er dopant and Pr sensitizer ions. The present invention also provides a method of efficient coupling from an optical source into a waveguide using a rotated optical element.Type: GrantFiled: May 23, 2000Date of Patent: March 19, 2002Assignee: University of New MexicoInventors: Balaji Srinivasan, Ravinder K. Jain, Jason David Tafoya
-
Patent number: 5598425Abstract: A source of electromagnetic radiation including an output, means for generating a drive signal derived from a regenerative feedback signal generated from a portion of said output, further characterized in that an electrical signal obtained from said portion of said output is passed through a narrow bandpass filter in generating said regenerative feedback signal, and means for modulating said electromagnetic radiation within the cavity when the modulating means is driven by said drive signal is disclosed together with a method of generating short pulse electromagnetic radiation signals including operating a electromagnetic radiation source having an output, generating a drive signal derived from a regenerative feedback signal generated from a portion of said output, further characterized in that said portion of said output is passed through a narrow bandpass filter in generating said regenerative feedback signal, and, modulating said electromagnetic radiation, said drive signal derived from a regenerative feedType: GrantFiled: November 15, 1993Date of Patent: January 28, 1997Assignee: University of New MexicoInventors: Ravinder K. Jain, John G. McInerney, Kalidev'Apura P. J. Reddy, Chi Yan
-
Patent number: 5390202Abstract: Filtered regenerative feedback is used to modulate a laser or other source of electromagnetic radiation to generate optical pulses whose amplitudes and repetition rates are continuously tunable. The technique is in principle applicable to any source of electromagnetic radiation and is especially effective for semiconductor diode lasers.Type: GrantFiled: December 23, 1992Date of Patent: February 14, 1995Assignee: University of New MexicoInventors: Chi Yan, Kalidev'Apura P. J. Reddy, Ravinder K. Jain, John G. McInerney
-
Patent number: 4865923Abstract: Synthetic layered structures, which may be semiconductor structures, are modified, both laterally and vertically, to provide novel electronic, optoelectronic, and optical properties. This is accomplished by selective intermixing of such layered structures through selective irradiation with laser beam or electron beam energy sources to effect interaction between neighboring regions, to a degree dependent on the energy density, while avoiding physical damage to the layered structures.Type: GrantFiled: March 7, 1988Date of Patent: September 12, 1989Assignee: Amoco CorporationInventors: John D. Ralston, Anthony L. Moretti, Ravinder K. Jain
-
Patent number: 4784450Abstract: Method and apparatus for the tunable generation of new wavelengths of optical radiation from input sources of predetermined wavelength. Optical radiation from a source (20), or sources, is launched into both the fast and slow axis of a birefringent optical waveguide (12) as pump waves. The pump waves generate new Stokes and anti-Stokes waves through enhanced four photon mixing processes. The Stokes wave is wavelength or frequency shifted from the pump wave by a small amount and exits the end of the optical waveguide (12) where it can be interfaced to various apparatus for utilization. The apparatus preferably employs polarization control means for controlling the polarization of optical radiation launched into the birefringent optical waveguide. The waveguide can also be an optical fiber or planar waveguide structure. The wavelength or radiation generated and output can be tuned by altering the birefringence of the waveguide.Type: GrantFiled: October 15, 1984Date of Patent: November 15, 1988Assignee: Hughes Aircraft CompanyInventors: Ravinder K. Jain, Knut Stenersen
-
Patent number: 4731338Abstract: A multilayer structure formed of two or more separate layers of different materials can be selectively intermixed so as to become compositionally transmuted, such that the distinction between the different original materials is lost, at least partially. This intermixing is accomplished by employing irradiation with a pulsed or rapidly scanned laser or electron beam. In addition,the intermixing can be accomplised by multiple pulses from the laser or electron beam so as to increase the degree of intermixing, thereby obtaining a more complete mixing.Type: GrantFiled: October 9, 1986Date of Patent: March 15, 1988Assignee: Amoco CorporationInventors: John D. Ralston, Anthony L. Moretti, Ravinder K. Jain
-
Patent number: 4493086Abstract: Laser apparatus is disclosed which employs the principles of phase conjugation to provide for short-pulse operation. A phase-conjugate reflector, lasing medium, and output coupling device are arranged to form a laser resonator. The lasing medium may be pumped by a conventional pump source to produce population inversion in the lasing medium. The phase-conjugate reflector is pulsed by means of a pulsed pump source which applies a periodic train of short laser pulses having high peak power and low average power thereto. The short-duration pulses create high reflective efficiencies in the phase-conjugate reflector, while minimizing the overall energy demands on the system. Additionally, the pump source which pumps the lasing medium may also provide pulsed energy thereto which is synchronous with the pulsed energy provided by the pulsed pump source to the phase-conjugate reflector. Accordingly, the system provides for a series of short pulsewidth laser pulses at its output.Type: GrantFiled: May 20, 1982Date of Patent: January 8, 1985Assignee: Hughes Aircraft CompanyInventors: Ravinder K. Jain, Concetto R. Giuliano
-
Patent number: 4165515Abstract: Devices which emit in the visible region having a metal oxide barrier layer, e.g. magnesium oxide or beryllium oxide, and having a corresponding metal electrode, i.e., a magnesium or beryllium electrode, in addition to a silver electrode are stable at room temperature. The emitted light spectrum is dependent on the voltage applied to the device which emits an orange or green appearing light for the Mg and Be junctions, respectively.Type: GrantFiled: December 28, 1977Date of Patent: August 21, 1979Assignee: Bell Telephone Laboratories, IncorporatedInventors: John G. Bergman, Jr., Ravinder K. Jain, Sigurd Wagner