USH2045H1 - Narrow band laser speckle suppression - Google Patents

Narrow band laser speckle suppression Download PDF

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Publication number
USH2045H1
USH2045H1 US08848623A US84862397A USH2045H US H2045 H1 USH2045 H1 US H2045H1 US 08848623 A US08848623 A US 08848623A US 84862397 A US84862397 A US 84862397A US H2045 H USH2045 H US H2045H
Authority
US
United States
Prior art keywords
narrow band
rotation
fiber
laser speckle
band laser
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US08848623A
Inventor
Lynda E Busse
Ishwar D Aggarwal
John A Moon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
US Government
US Department of Navy
Original Assignee
US Department of Navy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by US Department of Navy filed Critical US Department of Navy
Priority to US08848623A priority Critical patent/USH2045H1/en
Assigned to NAVY, UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE reassignment NAVY, UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MOON, JOHN A., AGGARWAL, ISHWAR D., BUSSE, LYNDA E.
Application granted granted Critical
Publication of USH2045H1 publication Critical patent/USH2045H1/en
Publication of USH2045H2 publication Critical patent/USH2045H2/en
Abandoned legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
    • G02B6/14—Mode converters
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4206—Optical features

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Laser Beam Processing (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

A method and apparatus for reducing points of zero intensity, i.e. speckle pattern, emerging from a multimode fiber. The apparatus comprises a beam deflector for rotating an input beam in a conical shape around a launch lens for projecting the beam into the fiber. The rotation of the beam further incorporates the use of two tilting mirrors being 90° out of phase to ensure a conical rotation. The conical rotation of the beam deflector ensures that the lens aberrations, which are rotationally symmetric, do not play a factor in beam alignment into the fiber aperture.
US08848623A 1997-04-29 1997-04-29 Narrow band laser speckle suppression Abandoned USH2045H1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US08848623A USH2045H1 (en) 1997-04-29 1997-04-29 Narrow band laser speckle suppression

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08848623A USH2045H1 (en) 1997-04-29 1997-04-29 Narrow band laser speckle suppression

Publications (2)

Publication Number Publication Date
USH2045H1 true USH2045H1 (en) 2002-09-03
USH2045H2 USH2045H2 (en) 2002-09-03

Family

ID=25303822

Family Applications (1)

Application Number Title Priority Date Filing Date
US08848623A Abandoned USH2045H1 (en) 1997-04-29 1997-04-29 Narrow band laser speckle suppression

Country Status (1)

Country Link
US (1) USH2045H1 (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6788901B2 (en) * 2001-04-25 2004-09-07 Meklyn Enterprises Limited Method of forming optical radiation beams for free-space optical communication systems
WO2005003839A1 (en) * 2003-06-25 2005-01-13 Institut für Lasertechnologien in der Medizin und Meßtechnik an der Universität Ulm Method for directionally radiating and/or for directionally resolved radiation detection
US20060126022A1 (en) * 2004-12-14 2006-06-15 Govorkov Sergei V Laser illuminated projection displays
US20060125969A1 (en) * 2004-12-14 2006-06-15 Chilla Juan L Laser illuminated projection displays
US20070070302A1 (en) * 2005-09-29 2007-03-29 Govorkov Sergei V Speckle reduction in laser illuminated projection displays having a one-dimensional spatial light modulator
EP1923722A1 (en) * 2005-09-05 2008-05-21 Kabushiki Kaisha TOPCON Mixing apparatus and distance measuring apparatus using same
US20100277704A1 (en) * 2009-04-29 2010-11-04 Jacques Gollier Speckle Mitigation in Laser Projection Systems
US8130433B2 (en) 2009-04-29 2012-03-06 Corning Incorporated Spinning optics for speckle mitigation in laser projection systems
WO2012069135A2 (en) 2010-11-23 2012-05-31 Bundesrepublik Deutschland, vertreten durch das Bundesministerium für Wirtschaft und Technologie, dieses vertreten durch den Präsidenten der Physikalisch-Technischen Bundesanstalt Phase-mixing device, lighting device, and method for reducing the spatial coherence of electromagnetic radiation
US8872361B2 (en) 2012-01-25 2014-10-28 Briggs & Stratton Corporation Standby generators including compressed fiberglass components
EP2402734A3 (en) * 2010-07-01 2017-04-26 Sony Corporation Minute particle analyzing device and method
US11591977B2 (en) 2020-06-03 2023-02-28 Briggs & Stratton, Llc Inverter generator
US11705779B2 (en) 2020-06-03 2023-07-18 Briggs & Stratton, Llc Inverter generator

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4484795A (en) * 1981-07-16 1984-11-27 International Standard Electric Corporation Delay equalization for single mode optical fibers
US4768853A (en) * 1986-08-08 1988-09-06 Corning Glass Works Optical fiber dispersion transformer
US5504828A (en) * 1994-06-29 1996-04-02 International Business Machines Corporation Apparatus for extending bandwidth of large core fiber optic transmission links
US5684642A (en) * 1994-02-22 1997-11-04 Mitsubishi Denki Kabushiki Kaisha Optical transmission system and light radiating method
US5687264A (en) * 1995-08-24 1997-11-11 Sandia Corporation Apparatus for injecting high power laser light into a fiber optic cable
US5883748A (en) * 1995-08-11 1999-03-16 Shum; Frank T. C. Optical system to achieve enhanced coupling efficiency of a light beam into an optical transmission medium
US5892866A (en) * 1996-10-01 1999-04-06 Honeywell Inc. Fiber optic mode scrambler

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4484795A (en) * 1981-07-16 1984-11-27 International Standard Electric Corporation Delay equalization for single mode optical fibers
US4768853A (en) * 1986-08-08 1988-09-06 Corning Glass Works Optical fiber dispersion transformer
US5684642A (en) * 1994-02-22 1997-11-04 Mitsubishi Denki Kabushiki Kaisha Optical transmission system and light radiating method
US5504828A (en) * 1994-06-29 1996-04-02 International Business Machines Corporation Apparatus for extending bandwidth of large core fiber optic transmission links
US5883748A (en) * 1995-08-11 1999-03-16 Shum; Frank T. C. Optical system to achieve enhanced coupling efficiency of a light beam into an optical transmission medium
US5687264A (en) * 1995-08-24 1997-11-11 Sandia Corporation Apparatus for injecting high power laser light into a fiber optic cable
US5892866A (en) * 1996-10-01 1999-04-06 Honeywell Inc. Fiber optic mode scrambler

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6788901B2 (en) * 2001-04-25 2004-09-07 Meklyn Enterprises Limited Method of forming optical radiation beams for free-space optical communication systems
WO2005003839A1 (en) * 2003-06-25 2005-01-13 Institut für Lasertechnologien in der Medizin und Meßtechnik an der Universität Ulm Method for directionally radiating and/or for directionally resolved radiation detection
US20080143888A1 (en) * 2004-12-14 2008-06-19 Chilla Juan L Laser illuminated projection displays
US20060126022A1 (en) * 2004-12-14 2006-06-15 Govorkov Sergei V Laser illuminated projection displays
US20060125969A1 (en) * 2004-12-14 2006-06-15 Chilla Juan L Laser illuminated projection displays
US7244028B2 (en) 2004-12-14 2007-07-17 Coherent, Inc. Laser illuminated projection displays
US7355657B2 (en) 2004-12-14 2008-04-08 Coherent, Inc. Laser illuminated projection displays
US7633562B2 (en) 2004-12-14 2009-12-15 Coherent, Inc. Laser illuminated projection displays
EP1923722A4 (en) * 2005-09-05 2011-07-13 Topcon Corp Mixing apparatus and distance measuring apparatus using same
EP1923722A1 (en) * 2005-09-05 2008-05-21 Kabushiki Kaisha TOPCON Mixing apparatus and distance measuring apparatus using same
US20070070302A1 (en) * 2005-09-29 2007-03-29 Govorkov Sergei V Speckle reduction in laser illuminated projection displays having a one-dimensional spatial light modulator
US7413311B2 (en) 2005-09-29 2008-08-19 Coherent, Inc. Speckle reduction in laser illuminated projection displays having a one-dimensional spatial light modulator
US20100277704A1 (en) * 2009-04-29 2010-11-04 Jacques Gollier Speckle Mitigation in Laser Projection Systems
US8077367B2 (en) 2009-04-29 2011-12-13 Corning Incorporated Speckle mitigation in laser projection systems
US8130433B2 (en) 2009-04-29 2012-03-06 Corning Incorporated Spinning optics for speckle mitigation in laser projection systems
EP2402734A3 (en) * 2010-07-01 2017-04-26 Sony Corporation Minute particle analyzing device and method
WO2012069135A2 (en) 2010-11-23 2012-05-31 Bundesrepublik Deutschland, vertreten durch das Bundesministerium für Wirtschaft und Technologie, dieses vertreten durch den Präsidenten der Physikalisch-Technischen Bundesanstalt Phase-mixing device, lighting device, and method for reducing the spatial coherence of electromagnetic radiation
WO2012069135A3 (en) * 2010-11-23 2012-08-02 Bundesrepublik Deutschland, vertreten durch das Bundesministerium für Wirtschaft und Technologie, dieses vertreten durch den Präsidenten der Physikalisch-Technischen Bundesanstalt Phase-mixing device, lighting device, and method for reducing the spatial coherence of electromagnetic radiation
US8872361B2 (en) 2012-01-25 2014-10-28 Briggs & Stratton Corporation Standby generators including compressed fiberglass components
US9431865B2 (en) 2012-01-25 2016-08-30 Briggs & Stratton Corporation Standby generator with removable panel
US9755480B2 (en) 2012-01-25 2017-09-05 Briggs & Stratton Corporation Standby generator including enclosure with intake opening in rear wall and exhaust opening in front wall
US10044243B2 (en) 2012-01-25 2018-08-07 Briggs & Stratton Corporation Standby generator with air intake on rear wall and exhaust opening on front wall
US10181770B2 (en) 2012-01-25 2019-01-15 Briggs & Stratton Corporation Standby generator with air intake on rear wall and exhaust opening on front wall
US11591977B2 (en) 2020-06-03 2023-02-28 Briggs & Stratton, Llc Inverter generator
US11705779B2 (en) 2020-06-03 2023-07-18 Briggs & Stratton, Llc Inverter generator
US12074503B2 (en) 2020-06-03 2024-08-27 Briggs & Stratton, Llc Inverter generator

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Legal Events

Date Code Title Description
AS Assignment

Owner name: NAVY, UNITED STATES OF AMERICA AS REPRESENTED BY T

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MOON, JOHN A.;BUSSE, LYNDA E.;AGGARWAL, ISHWAR D.;REEL/FRAME:009470/0353;SIGNING DATES FROM 19970428 TO 19970429

STCF Information on status: patent grant

Free format text: PATENTED CASE