Ronald Lacomb

7492805, Feb 17, 2009

Apr 11, 2006

11/401561

Ronald LaComb - West Greenwich RI, US
Sallie S. Townsend - Manchester CT, US

H01S 3/06

372 67, 372 66

A spherical laser includes a transparent or semi-transparent outer spherical vessel having an internal cavity, an amplifying medium in the cavity, and means to excite the amplifying medium. The sphere is provided with a partially reflective coating to act as a spherical optical resonator. Excitation of the amplifying medium produces an optical gain. When the gain exceeds cavity losses and threshold conditions are met, lasing is supported. This creates a three-dimensional, spherically radiating emission, emulating a point source. The output is radially diverging, but is harnessed by enclosing the sphere within a mirrored ellipse to image the output to a point, or within a mirrored parabola to columinate the emission. A concentric, reflective inner sphere may be disposed in the cavity, with the amplifying medium lying between the two spheres. A voltage potential is applied between the spheres to excite the medium.

8479583, Jul 9, 2013

Jun 9, 2011

13/135326

Julie LaComb - West Greenwich RI, US
Ronald LaComb - West Greenwich RI, US

The United States of America as represented by the Secretary of the Navy - Washington DC

G01B 7/16
G01B 5/30
G01F 25/00
G01L 1/00

73763, 73760

A quasi-static bend sensor is taught that comprises a layering of a plurality of ionic polymer metal composite (IPMC) sections with intervening dielectric sections in a vertical stack configuration. The IPMC sections are electrically connected in parallel. The surface of the stack is coated with high-purity synthetic isoparaffins for polymer hydration to increase step response consistency. Finally, the vertical stack configuration is electrically connected to an electric field measurement device and a linear quadratic regulator based controller for reducing settling time.

20090021327, Jan 22, 2009

Jul 18, 2007

11/779458

Julie Anne LaComb - West Greenwich RI, US
Ronald LaComb - West Greenwich RI, US

H01P 1/20

333202

An electrical filter system includes a transmission line and three or more separated photonic bandgap (PBG) structures positioned successively therealong.

20220407291, Dec 22, 2022

Jun 15, 2022

17/807131

Ronald LaComb - W Greenwich RI, US

H01S 5/10
H01S 5/028
H01S 5/125
H01S 5/22
H01S 5/026

The present disclosure relates to index guided semiconductor laser devices supporting wide single lateral mode operation for high power operation. A narrow channel ridge waveguide structure is presented which devices can be configured as single lateral multi-spectral high power semiconductor lasers, single frequency lasers, gain chips and semiconductor amplifiers. More specifically it relates to a means for increasing the lateral mode size over that of conventional index guided structures to increase the average output power typically limed by Catastrophic Optical Damage (COD) at the laser facet or by intensity related effects. This potentially allows the overall laser cavity length to be shortened for a given output power level to stabilize frequency locking with internal or external gratings to improve single frequency operation.

20210149001, May 20, 2021

Dec 23, 2020

17/132056

- Arlington VA, US
- Pittsburgh PA, US
Margo Staruch - Alexandria VA, US
Konrad Bussmann - Alexandria VA, US
Jeffrey W. Baldwin - Fairfax VA, US
Bernard R. Matis - Alexandria VA, US
Ronald Lacomb - West Greenwich RI, US
William Zappone - West Greenwich RI, US
Julie Lacomb - West Greenwich RI, US
Meredith Metzler - Havertown PA, US
Norman Gottron - Pittsburgh PA, US

G01R 33/09
H01L 43/08
B82Y 25/00
H01L 41/113
H01L 41/47
H01L 43/12
H01L 41/29

A high-sensitivity and ultra-low power consumption magnetic sensor using a magnetoelectric (ME) composite comprising of magnetostrictive and piezoelectric layers. This sensor exploits the magnetically driven resonance shift of a free-standing magnetoelectric micro-beam resonator. Also disclosed is the related method for making the magnetic sensor.

20210104861, Apr 8, 2021

Nov 24, 2020

17/103470

RONALD LACOMB - WEST GREENWICH RI, US

H01S 3/083
H01S 3/0941
H01S 3/067
H01S 3/06

The present disclosure relates to a three-dimensional cylindrical cavity-type laser system capable of supporting circumferential radial emission. A cylindrical ring waveguide provides optical confinement in the radial and axial dimensions thereby supporting a plurality of radial modes, one of a plurality of axial modes and a plurality of degenerate azimuthal modes. These modes constitute a set of traveling wave modes which propagate around the cylindrical ring waveguide possessing various degrees of optical confinement as quantified by their respective Q-factors. Index tailoring is used to tailor the radial refractive index profile and geometry of the waveguide to support radial modes possessing Q-factors capable of producing efficient radial emission, while gain tailoring is used to define a gain confining region which offsets modal gain factors of the modal constituency to favor a preferred set of modes supporting efficient radial emission out of the total modal constituency supported by the resonator. Under appropriate pump actuation the selected modes produce circumferential laser radiation with the output surface comprising of the entire outer perimeter of the cylindrical ring waveguide. The design is applicable toward both micro-resonators and resonators much larger than the optical wavelength, enabling high output powers and scalability. The circumferential radial laser emission can be concentrated by positioning the cylindrical ring laser inside a three-dimensional conical mirror thereby forming a laser ring of light propagating in the axial dimension away from the surface of the laser, which can be subsequently collimated for focused using conventional optics.

20190393667, Dec 26, 2019

Jan 25, 2018

16/480882

- Livermore CA, US
Ronald LACOMB - Newport RI, US

LAWRENCE LIVERMORE NATIONAL SECURITY, LLC - Livermore CA
THE GOVERNMENT OF UNITED STATES AS REPRESENTED BY THE SECRETARY OF THE NAVY - Newport RI

H01S 3/06
H01S 3/04
H01S 3/0941
H01S 3/08
H01S 3/081
H01S 3/042

The present disclosure relates to a laser system. The laser system may have at least non-flat gain media disc. At least one pump source may be configured to generate a beam that pumps the non-flat gain media disc. A laser cavity may be formed by the pump source and the non-flat gain media disc. An output coupler may be included for receiving and directing the output beam toward an external component.

20190245318, Aug 8, 2019

Jan 21, 2019

16/252928

Ronald LaComb - West Greenwich RI, US
Kevin LaComb - Higganum CT, US
Sallie Townsend - West Hartford CT, US

H01S 3/081
H01S 3/083
H01S 3/067

The present disclosure relates to a ring-type laser system supporting circumferential radial emission. A cylindrical ring waveguide provides optical confinement in the radial and axial dimensions supporting a plurality of traveling wave modes with various degrees of confinement. The waveguide contains a gain media which is gain tailored to offset modal confinement factors of the modal constituency to favor radial emission. The selected modes radiate energy as they circulate the laser resonator with a 360 degree output coupler. The design is applicable toward both micro-resonators and resonators much larger than the optical wavelength, enabling high output powers and scalability. The circumferential radial laser emission can be concentrated by positioning the cylindrical ring laser inside a three-dimensional conical mirror thereby forming a laser ring of light propagating in the axial dimension away from the surface of the laser, which can be subsequently collimated for focused using conventional optics.