Seagate Technology Incorporated

University of Utah Research Foundation

Process Instruments, Inc.

George R Gray

Edward Charles Gage

Ronald Evan Gerber

John F Heanue

Jeffrey P Wilde

Alexander Tselikov

Yongwei Zhang

John H Jerman

Lee Morgan Smith

Jerry E Hurst, Jr

Richard Dennis Rallison

James E Durnin

Lori Grace Swanson

Robert E Benner

Jill D Berger

Daniel E Glumac

Viatcheslav Izraelian

Shubhagat Gangopadhyay

Ming-Wei Pan

Steve C Dohmeier

Tim Gardner

Ghamin A Al-Jumaily

A laser source is located in a relatively cool accessible location. Because there is adequate heat dissipation for the laser source, changes in the laser wavelength that arise from laser temperature changes are minimized. The invention described here includes the use of optical fiber to deliver light from the laser source. The laser reliability is improved because of reduced temperature and temperature fluctuations are experienced by the laser source. Because the laser source can be placed outside the drives hermetic seal, the laser can be easily replaced in the field, if required.

Field serviceable laser pen for optical disk drives

The present invention provides a hard disk drive laser assisted magnetic recording system including a semiconductor laser and magnetic write coil integrally formed into a slider. The slider preferably includes a perpendicular magnetic recording section adjacent a laser section. The laser section may form an air bearing surface of the slider. During recording operations, laser radiation from the laser section heats a region of the magnetic recording media in order to reduce its coercivity.

Laser assisted magnetic recording apparatus and method

An optical data storage system utilizes optical fibers for transfer of information to and from storage media. The storage media comprises magneto-optical storage disks. The optical fibers are low-birefringence optical fibers. As compared with conventional approaches, a polarization state conveyed by the optical fiber is accurately reproduced with reduced noise. Various noise reduction techniques are provided by substantially decreasing or eliminating spurious reflections (or the effects thereof) at end faces and of an optical fiber. In particular, various techniques, such as index matching, a cover slip method, laser modulation, or angle polishing, may be used to eliminate spurious reflections (or the effects thereof) at the front end face of the optical fiber. Various techniques, such as angle cleaving, index matching, or multi-mode fiber splicing, may be used to eliminate spurious reflections (or the effects thereof) at the back end face of the optical fiber.

Refractive index matching means coupled to an optical fiber for eliminating spurious light

An optical system and method for selective transmission of light between a source of light and set of storage disks along an optical path includes at least one polarization maintaining optical fiber optical fiber. Various noise reduction techniques are provided by substantially decreasing or eliminating spurious reflections (or the effects thereof) at end faces and of an optical fiber. In particular, various techniques, such as index matching, a cover slip method, or laser modulation, may be used to eliminate spurious reflections (or the effects thereof) at the front end face of the optical fiber. Various techniques, such index matching or multi-mode fiber splicing, may be used to eliminate spurious reflections (or the effects thereof) at the end face of the optical fiber.

Method and system for suppressing spurious reflections

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.

Detector layer for an optics module

Raman spectrometer for analyzing the chemical composition of sample streams using an external cavity laser light source is disclosed. The laser provides an effective light source useful in continuously analyzing a sample stream containing petroleum products, aqueous or biological fluids, or solid slurries. The light is introduced into a bundle of optical fibers connected to a Raman sample cell. The Raman sample cell is configured to allow continuous sample flow therethrough. Scattered light from the sample cell preferably exits the optical fibers as a linear optical signal. A Raman spectrometer passes the optical signal through an excitation wavelength filter, an optical slit, and a volume holographic transmission grating with an aberration correction device before transmitting the optical signal to a charge coupled device array which converts the optical signal into a electronic signal. The electronic signal is analyzed and converted by computer into a representation of the chemical analysis of the sample stream.

Raman spectroscopy apparatus and method using external cavity laser for

Growing community of inventors

Apple Valley, MN, United States of America

George R Gray