Jill Diane Berger

US Patent:

6373792, Apr 16, 2002

Filed:

Dec 10, 1999

Appl. No.:

09/459262

Inventors:

Karl A. Belser - San Jose CA
Terry W. McDaniel - Morgan Hill CA
Jill D. Berger - San Jose CA
John H. Jerman - Palo Alto CA

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 1100

US Classification:

369 1338, 369 1353, 428 643

Abstract:

A data storage system including a source of heat, a substrate, a storage layer, a lubricant layer, a flying head, and a dielectric layer is disclosed. The dielectric layer is disposed between the lubricant layer and the storage layer. The flying head is disposed above the lubricant layer. The dielectric layer has a heat capacity that is sufficient to generate a temperature gradient between the storage layer and the lubricant layer so as to reduce lubricant evaporation onto the flying head.

US Patent:

6396115, May 28, 2002

Filed:

May 21, 1999

Appl. No.:

09/316644

Inventors:

Edward C. Gage - Apple Valley MN
Ronald E. Gerber - Richfield MN
George R. Gray - Apple Valley MN
Steve C. Dohmeier - Apple Valley MN
James E. Durnin - Apple Valley MN
Daniel E. Glumac - Lake Canada MN
Tim Gardner - Webster NY
Jill D. Berger - San Jose CA
John H. Jerman - Palo Alto CA
John F. Heanue - San Jose CA
Ghamin A. Al-Jumaily - Columbia Heights MN

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

H01L 310232

US Classification:

257432, 257446, 257452, 257449, 257457, 257466

Abstract:

A detector layer for an optics module includes at least one diode having at least one sloped sidewall. At least one isolation region may be formed adjacent to the at least one sloped sidewall to isolate the at least one diode. Conducting material is disposed on at least a portion of the top surface of the diode. An insulating material is disposed on at least a portion of the diode and extends to the conducting material. A metal is disposed on at least a portion of the insulating material and at least a portion of the conducting material such that the metal is coupled to the conducting material.

US Patent:

6847661, Jan 25, 2005

Filed:

Nov 29, 2000

Appl. No.:

09/728212

Inventors:

John H. Jerman - Palo Alto CA, US
John D. Grade - Mountain View CA, US
Jill D. Berger - Los Gatos CA, US
John F. Heanue - San Jose CA, US

Assignee:

Iolon, Inc. - San Jose CA

International Classification:

H01S 310
H01S 300
H01S 308

US Classification:

372 20, 372 381, 372 99, 372101, 372102

Abstract:

A tunable laser comprising a laser source for providing light with a wavelength along an optical path. A diffractive element is positioned in the optical path and spaced from the laser source for redirecting the light received from the laser source. A reflective element is positioned in the optical path and spaced from the diffractive element for receiving the light redirected by the diffractive element and for further redirecting the light back along the optical path to the reflective element. The diffractive element receives the light further redirected by the reflective element and returns the light along the optical path to the laser source. The optical path created by the laser source, the diffractive element and the reflective element causes the light to lase at the wavelength. At least one microactuator is coupled to one of the diffractive element and the reflective element for moving such element to select the wavelength of the light. A variety of microactuators that can be used with the tunable laser are provided.

US Patent:

6898221, May 24, 2005

Filed:

Mar 15, 2002

Appl. No.:

10/099414

Inventors:

Jill D. Berger - Los Gatos CA, US
Subrata K. Dutta - San Jose CA, US
Alan A. Fennema - San Jose CA, US
Olga A. Gorbounova - Fremont CA, US
Stephen J. Hrinya - San Jose CA, US
Fedor A. Ilkov - Sunnyvale CA, US
David A. King - Menlo Park CA, US
Heather L. Tavernier - Mountain View CA, US
Alexander A. Tselikov - Fremont CA, US

Assignee:

Iolon, Inc. - San Jose CA

International Classification:

H01S003/13
H01S003/10

US Classification:

372 32, 372 20, 372 29011, 372 3801

Abstract:

An apparatus comprising a first reference element having an output power that varies monotonically with input frequency over an operating frequency range and receiving at least a portion of an output beam of light from an optical source. A second reference element having an output power that is frequency dependent receives at least a portion of the output beam of light. A first optical detector measures the power of a first reference beam of light from the first reference element. A second optical detector measures the power of a second reference beam of light from the second reference element. Electronic circuitry is coupled to the first and second optical detectors for receiving first and second reference signals therefrom and producing a coarse error signal for permitting coarse adjustment and a fine error signal for permitting fine adjustment of the frequency of the output beam of light.

US Patent:

6912235, Jun 28, 2005

Filed:

Jul 31, 2002

Appl. No.:

10/210039

Inventors:

Douglas W. Anthon - El Cerrito CA, US
Jill D. Berger - Los Gatos CA, US
Alexander A. Tselikov - Fremont CA, US
Stephen J. Hrinya - San Jose CA, US
Howard S. Lee - San Jose CA, US
Alan A. Fennema - San Jose CA, US
Man F. Cheung - Campbell CA, US

Assignee:

Iolon, Inc. - San Jose CA

International Classification:

H01S003/098
H01S003/13

US Classification:

372 2902, 372 18, 372 19, 372 32

Abstract:

An apparatus and method for controlling the phase of a tunable laser is provided. Stabilization of the mode of a laser beam is provided as the laser is tuned to a target frequency. For one embodiment, a laser generates a reference beam and an output beam. The power of each of beam is measured by optical detectors, and a ratio thereof is utilized to detect when a mode hop occurs as the laser is coarsely tuned. The average of the pre and post mode hop ratios is utilized as a control setpoint while finely tuning the laser to the target frequency. Wavelength lockers, optical power dividers and optical detectors are utilized to determine power levels of the reference and output beams while also monitoring frequency characteristics thereof. A control unit utilizes the outputs from the wavelength locker to control the operation of the extended cavity laser during and after tuning.

US Patent:

7221452, May 22, 2007

Filed:

Aug 7, 2003

Appl. No.:

10/638061

Inventors:

Jill D. Berger - Los Gatos CA, US
Douglas W. Anthon - El Cerrito CA, US
Fedor A. Ilkov - Sunnyvale CA, US
David A. King - Menlo Park CA, US

Assignee:

Coherent, Inc. - Santa Clara CA

International Classification:

G01J 3/28

US Classification:

356327, 356328, 356334

Abstract:

An apparatus for filtering an input beam of light to produce an output beam of light is provided. The apparatus facilitates tuning an input beam of light to a desired wavelength by directing the input beam of light, via a mirror, onto a diffractive optical element and returning the diffracted portion of the input beam of light as an output beam of light. The apparatus may also include a polarization recovery element adapted for receiving the input beam of light and outputting a first and second spatially offset beam of polarized light. The apparatus may also be configured as a tunable receiver by utilizing a detector to detect a characteristic of a filtered output beam. The output beam may be additionally filtered by a spatial filter.

US Patent:

60814993, Jun 27, 2000

Filed:

Nov 13, 1998

Appl. No.:

9/191835

Inventors:

Jill D. Berger - San Jose CA
John F. Heanue - San Jose CA
Jerry E. Hurst - San Jose CA
John H. Jerman - Palo Alto CA
Jeffrey P. Wilde - Los Gatos CA

Assignee:

Seagate Technology, Inc. - Scotts Valley CA

International Classification:

G11B 1304

US Classification:

369112

Abstract:

A magneto-optical (MO) data storage system has a flying optical head supported over a MO storage medium, the flying head having channels or grooves formed therein and optical elements disposed within the grooves for directing an incident light beam to the storage medium and for receiving a reflected light beam from the storage medium. The flying head may comprise a two-piece assembly comprising a slider body which flies over the surface of the storage medium, and a separate optics mounting block formed to receive the optical elements and to be supported on the flying head. Preferably, the slider body is L-shaped and provides an angled surface for receiving a micro-machined mirror aligned with optical elements on the optics mounting block and controllable for deflecting the light beam to and from the storage medium.

US Patent:

20210294042, Sep 23, 2021

Filed:

Mar 2, 2021

Appl. No.:

17/189985

Inventors:

- Mountain View CA, US
Jill Berger - Saratoga CA, US

International Classification:

G02B 6/35

Abstract:

An optical assembly includes a light source for providing a beam of light, a lens system configured to expand and collimate the beam of light, and a configurable beam injector, wherein the beam injector contains a first grid plate and a second grid plate to block individual beams of light. The first grid plate and the second grid plate may be configured such that each grid plate respectively corresponds to particular MEMS mirrors. The grid plates can be configured to have pathways that allow for beams of light to be passed through and other pathways which are blocked to prevent the passage of light. The first grid plate and second grid plate may thus block or allow for transmission of beams of lights to those particular MEMS mirrors. The second grid plate can be configured to be easily swappable during or removable to allow for a different set of beams of light, corresponding to a different set of MEMS mirrors, to be blocked. The second grid plate can be configured to be rotated or slid linearly within a housing.