Patents by Inventor Sami K. Hahto

Sami K. Hahto 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: 8110820
    Abstract: A multipurpose ion implanter beam line configuration constructed for enabling implantation of common monatomic dopant ion species and cluster ions, the beam line configuration having a mass analyzer magnet defining a pole gap of substantial width between ferromagnetic poles of the magnet and a mass selection aperture, the analyzer magnet sized to accept art ion beam from a slot-form ion source extraction aperture of at least about 80 mm height and at least about 7 mm width, and to produce dispersion at the mass selection aperture in a plane corresponding to the width of the beam, the mass selection aperture capable of being set to a mass-selection width sized to select a beam of the cluster ions of the same dopant species but incrementally differing molecular weights, the mass selection aperture also capable of being set to a substantially narrower mass-selection width and the analyzer magnet having a resolution at the mass selection aperture sufficient to enable selection of a beam of monatomic dopant ions o
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: February 7, 2012
    Assignee: SemEquip, Inc.
    Inventors: Hilton F. Glavish, Dale C. Jacobson, Sami K. Hahto, Thomas N. Horsky
  • Publication number: 20110089321
    Abstract: A multipurpose ion implanter beam line configuration comprising a mass analyzer magnet followed by a magnetic scanner and magnetic collimator combination that introduce bends to the beam path, the beam line constructed for enabling implantation of common monatomic dopant ion species cluster ions, the beam line configuration having a mass analyzer magnet defining a pole gap of substantial width between ferromagnetic poles of the magnet and a mass selection aperture, the analyzer magnet sized to accept an ion beam from a slot-form ion source extraction aperture of at least about 80 mm height and at least about 7 mm width, and to produce dispersion at the mass selection aperture in a plane corresponding to the width of the beam, the mass selection aperture capable of being set to a mass-selection width sized to select a beam of the cluster ions of the same dopant species but incrementally differing molecular weights, the mass selection aperture also capable of being set to a substantially narrower mass-selection
    Type: Application
    Filed: November 17, 2010
    Publication date: April 21, 2011
    Applicant: Semequip, Inc.
    Inventors: Hilton F. Glavish, Thomas N. Horsky, Dale C. Jacobson, Sami K. Hahto, Masao Naito, Nobuo Nagai, Nariaki Hamamoto
  • Patent number: 7928406
    Abstract: A new type of triode extraction system, a Cluster Ion Beam Extraction System, is disclosed for broad energy range cluster ion beam extraction applications while still being applicable to atomic and molecular ion species as well. The extraction aperture plate contours are set to minimize the beam cross over and at the same time shield the source from excess extraction electric fields thus allowing smaller values of the extraction gap. In addition, a novel focusing feature is integrated into these new optics which allows the beam to be either focused or de-focused in the non-dispersive plane by using a bipolar bias voltage of only a few kV over a broad range of beam energy. This is a superior solution to a stand-alone electrostatic lens solution, for example an einzel lens, which would require tens of kV of bias voltage in order to be able to focus an energetic beam.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: April 19, 2011
    Assignee: SemEquip, Inc.
    Inventors: Thomas N. Horsky, Sami K. Hahto
  • Publication number: 20100320395
    Abstract: An ion source is disclosed for use in fabrication of semiconductors. The ion source includes an electron emitter that includes a cathode mounted external to the ionization chamber for use in fabrication of semiconductors. In accordance with an important aspect of the invention, the electron emitter is employed without a corresponding anode or electron optics. As such, the distance between the cathode and the ionization chamber can be shortened to enable the ion source to be operated in an arc discharge mode or generate a plasma. Alternatively, the ion source can be operated in a dual mode with a single electron emitter by selectively varying the distance between the cathode and the ionization chamber.
    Type: Application
    Filed: May 10, 2010
    Publication date: December 23, 2010
    Applicant: SemEquip, Inc.
    Inventors: Sami K. Hahto, Richard Goldberg, Edward McIntyre, Thomas N. Horsky
  • Patent number: 7851773
    Abstract: A multipurpose ion implanter beam line configuration comprising a mass analyzer magnet followed by a magnetic scanner and magnetic collimator combination that introduce bends to the beam path, the beam line constructed for enabling implantation of common monatomic dopant ion species cluster ions, the beam line configuration having a mass analyzer magnet defining a pole gap of substantial width between ferromagnetic poles of the magnet and a mass selection aperture, the analyzer magnet sized to accept an ion beam from a slot-form ion source extraction aperture of at least about 80 mm height and at least about 7 mm width, and to produce dispersion at the mass selection aperture in a plane corresponding to the width of the beam, the mass selection aperture capable of being set to a mass-selection width sized to select a beam of the cluster ions of the same dopant species but incrementally differing molecular weights, the mass selection aperture also capable of being set to a substantially narrower mass-selection
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: December 14, 2010
    Assignee: Semiquip, Inc.
    Inventors: Hilton F. Glavish, Thomas N. Horsky, Dale C. Jacobson, Sami K. Hahto, Masao Naito, Nobuo Nagai, Nariaki Hamamoto
  • Patent number: 7838850
    Abstract: An ion source is disclosed for use in fabrication of semiconductors. The ion source includes an electron emitter that includes a cathode mounted external to the ionization chamber for use in fabrication of semiconductors. In accordance with an important aspect of the invention, the electron emitter is employed without a corresponding anode or electron optics. As such, the distance between the cathode and the ionization chamber can be shortened to enable the ion source to be operated in an arc discharge mode or generate a plasma. Alternatively, the ion source can be operated in a dual mode with a single electron emitter by selectively varying the distance between the cathode and the ionization chamber.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: November 23, 2010
    Assignee: SemEquip, Inc.
    Inventors: Sami K. Hahto, Richard Goldberg, Edward McIntyre, Thomas N. Horsky
  • Publication number: 20100066252
    Abstract: An ion source for the generation of hydrogen or deuterium ions is disclosed, said source suitable for the generation of D-D and D-T neutrons, wherein the body of the ion source is cylindrical, and disposed at one end of the ion source opposite the extraction plate, is a single, spiraled RF coil antenna, in which the spiraled coils are flat.
    Type: Application
    Filed: April 17, 2009
    Publication date: March 18, 2010
    Applicant: The Regents of the University of California
    Inventors: Jani Petteri Reijonen, Sami K. Hahto
  • Publication number: 20100025573
    Abstract: A fast nuclear particle generator is described, useful for highly penetrating particle beam inspection equipment, that is capable of generating pulses of 5 ns or less, which pulses may comprise neutrons of various energies, gammas of various energies, or a mixture of neutron and gammas of various energies. The nuclear particle generator includes means for decelerating an incident swept beam so that nuclear particles are generated only during that small time interval that a beam strikes a target. This eliminates spurious background nuclear particle generation, and decreases beam dump cooling requirements.
    Type: Application
    Filed: December 14, 2007
    Publication date: February 4, 2010
    Applicant: The Regents of the University of California
    Inventors: Sami K. Hahto, Ka-Ngo Leung, Taneli Ville Matias Kalvas
  • Publication number: 20090283695
    Abstract: A multi mode ion implantation system, which operates in both an arc discharge mode of operation and a non arc discharge mode of operation, is described. The multi mode ion implantation system may consist of dual ionization volumes forming two ion sources, an arc discharge source and a non arc discharge source, in tandem. The dual chambers and the two sources feed the ion implantation system with material of various species for multi mode, an arc discharge and a non arc discharge operation.
    Type: Application
    Filed: May 13, 2009
    Publication date: November 19, 2009
    Inventors: Thomas N. Horsky, Richard Goldberg, Sami K. Hahto
  • Publication number: 20090261248
    Abstract: A multipurpose ion implanter beam line configuration comprising a mass analyzer magnet followed by a magnetic scanner and magnetic collimator combination that introduce bends to the beam path, the beam line constructed for enabling implantation of common monatomic dopant ion species cluster ions, the beam line configuration having a mass analyzer magnet defining a pole gap of substantial width between ferromagnetic poles of the magnet and a mass selection aperture, the analyzer magnet sized to accept an ion beam from a slot-form ion source extraction aperture of at least about 80 mm height and at least about 7 mm width, and to produce dispersion at the mass selection aperture in a plane corresponding to the width of the beam, the mass selection aperture capable of being set to a mass-selection width sized to select a beam of the cluster ions of the same dopant species but incrementally differing molecular weights, the mass selection aperture also capable of being set to a substantially narrower mass-selection
    Type: Application
    Filed: June 13, 2007
    Publication date: October 22, 2009
    Inventors: Hilton F. Glavish, Thomas N. Horsky, Dale C. Jacobson, Sami K. Hahto, Masao Naito, Nobuo Nagai, Nariaki Hamamoto
  • Publication number: 20090206270
    Abstract: A multipurpose ion implanter beam line configuration constructed for enabling implantation of common monatomic dopant ion species and cluster ions, the beam line configuration having a mass analyzer magnet defining a pole gap of substantial width between ferromagnetic poles of the magnet and a mass selection aperture, the analyzer magnet sized to accept art ion beam from a slot-form ion source extraction aperture of at least about 80 mm height and at least about 7 mm width, and to produce dispersion at the mass selection aperture in a plane corresponding to the width of the beam, the mass selection aperture capable of being set to a mass-selection width sized to select a beam of the cluster ions of the same dopant species but incrementally differing molecular weights, the mass selection aperture also capable of being set to a substantially narrower mass-selection width and the analyzer magnet having a resolution at the mass selection aperture sufficient to enable selection of a beam of monatomic dopant ions o
    Type: Application
    Filed: June 13, 2007
    Publication date: August 20, 2009
    Applicant: SEMEQUIP, INC.
    Inventors: Hilton F. Glayish, Dale C. Jacobson, Sami K. Hahto, Thomas N. Horsky
  • Publication number: 20090014667
    Abstract: An ion source is disclosed for use in fabrication of semiconductors. The ion source includes an electron emitter that includes a cathode mounted external to the ionization chamber for use in fabrication of semiconductors. In accordance with an important aspect of the invention, the electron emitter is employed without a corresponding anode or electron optics. As such, the distance between the cathode and the ionization chamber can be shortened to enable the ion source to be operated in an arc discharge mode or generate a plasma. Alternatively, the ion source can be operated in a dual mode with a single electron emitter by selectively varying the distance between the cathode and the ionization chamber.
    Type: Application
    Filed: March 31, 2008
    Publication date: January 15, 2009
    Inventors: Sami K. Hahto, Richard Goldberg, Edward McIntyre, Thomas N. Horsky
  • Publication number: 20080290266
    Abstract: A new type of triode extraction system, a Cluster Ion Beam Extraction System, is disclosed for broad energy range cluster ion beam extraction applications while still being applicable to atomic and molecular ion species as well. The extraction aperture plate contours are set to minimize the beam cross over and at the same time shield the source from excess extraction electric fields thus allowing smaller values of the extraction gap. In addition, a novel focusing feature is integrated into these new optics which allows the beam to be either focused or de-focused in the non-dispersive plane by using a bipolar bias voltage of only a few kV over a broad range of beam energy. This is a superior solution to a stand-alone electrostatic lens solution, for example an einzel lens, which would require tens of kV of bias voltage in order to be able to focus an energetic beam.
    Type: Application
    Filed: May 22, 2008
    Publication date: November 27, 2008
    Inventors: Thomas N. Horsky, Sami K. Hahto
  • Patent number: 7176469
    Abstract: A radio frequency (RF) driven plasma ion source has an external RF antenna, i.e. the RF antenna is positioned outside the plasma generating chamber rather than inside. The RF antenna is typically formed of a small diameter metal tube coated with an insulator. An external RF antenna assembly is used to mount the external RF antenna to the ion source. The RF antenna tubing is wound around the external RF antenna assembly to form a coil. The external RF antenna assembly is formed of a material, e.g. quartz, which is essentially transparent to the RF waves. The external RF antenna assembly is attached to and forms a part of the plasma source chamber so that the RF waves emitted by the RF antenna enter into the inside of the plasma chamber and ionize a gas contained therein. The plasma ion source is typically a multi-cusp ion source. A converter can be included in the ion source to produce negative ions.
    Type: Grant
    Filed: September 6, 2003
    Date of Patent: February 13, 2007
    Assignee: The Regents of the University of California
    Inventors: Ka-Ngo Leung, Sami K. Hahto, Sari T. Hahto
  • Publication number: 20040104683
    Abstract: A radio frequency (RF) driven plasma ion source has an external RF antenna, i.e. the RF antenna is positioned outside the plasma generating chamber rather than inside. The RF antenna is typically formed of a small diameter metal tube coated with an insulator. A flange is used to mount the external RF antenna to the ion source. The RF antenna tubing is wound around the flange to form a coil. The flange is formed of a material, e.g. quartz, that is essentially transparent to the RF waves. The flange is attached to and forms a part of the plasma source chamber so that the RF waves emitted by the RF antenna enter into the inside of the plasma chamber and ionize a gas contained therein. The plasma ion source is typically a multi-cusp ion source. A converter can be included in the ion source to produce negative ions.
    Type: Application
    Filed: September 6, 2003
    Publication date: June 3, 2004
    Inventors: Ka-Ngo Leung, Sami K. Hahto, Sari T. Hahto