WO1991001193A3 - Mecanisme de couplage pour la conversion efficace de profils de rayons axisymetriques en profils appropries pour une transmission sans diffraction dans un espace libre - Google Patents

Mecanisme de couplage pour la conversion efficace de profils de rayons axisymetriques en profils appropries pour une transmission sans diffraction dans un espace libre

Info

Publication number
WO1991001193A3
WO1991001193A3 PCT/US1990/004009 US9004009W WO9101193A3 WO 1991001193 A3 WO1991001193 A3 WO 1991001193A3 US 9004009 W US9004009 W US 9004009W WO 9101193 A3 WO9101193 A3 WO 9101193A3
Authority
WO
WIPO (PCT)
Prior art keywords
laser
profiles
diffraction
coupling mechanism
profile
Prior art date
Application number
PCT/US1990/004009
Other languages
English (en)
Other versions
WO1991001193A2 (fr
Inventor
Bob W Stewart
Original Assignee
Bob W Stewart
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 Bob W Stewart filed Critical Bob W Stewart
Publication of WO1991001193A2 publication Critical patent/WO1991001193A2/fr
Publication of WO1991001193A3 publication Critical patent/WO1991001193A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
    • B23K26/066—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms by using masks
    • 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
    • G02B6/4296—Coupling light guides with opto-electronic elements coupling with sources of high radiant energy, e.g. high power lasers, high temperature light sources

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Lasers (AREA)
  • Laser Beam Processing (AREA)

Abstract

L'invention concerne la conversion de rayons laser de profil typique en des rayons à profil à l'aide de systèmes optiques non linéaires. Les rayons laser à profil peuvent être utilisés pour des systèmes d'alignement de précision, de soudage au laser, les communications et la transmission de puissance. On obtient une extraction d'énergie plus efficace des milieux de gain laser tout en maintenant des divergences de rayons plus faibles. On fait passer un rayon laser au travers d'un dispositif de profilage annulaire (27) et d'un masque (26) dans un milieu optique non linéaire pour conjuguer les phases d'un rayonnement laser de puissance plus élevée par mélange de quatre ondes dégénérées ou mélange de deux ondes.
PCT/US1990/004009 1989-07-18 1990-07-17 Mecanisme de couplage pour la conversion efficace de profils de rayons axisymetriques en profils appropries pour une transmission sans diffraction dans un espace libre WO1991001193A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/380,890 US4992750A (en) 1989-07-18 1989-07-18 Coupling mechanism for efficient conversion of axisymmetric beam profiles into profiles suitable for diffraction
US380,890 1989-07-18

Publications (2)

Publication Number Publication Date
WO1991001193A2 WO1991001193A2 (fr) 1991-02-07
WO1991001193A3 true WO1991001193A3 (fr) 1991-04-18

Family

ID=23502846

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1990/004009 WO1991001193A2 (fr) 1989-07-18 1990-07-17 Mecanisme de couplage pour la conversion efficace de profils de rayons axisymetriques en profils appropries pour une transmission sans diffraction dans un espace libre

Country Status (3)

Country Link
US (1) US4992750A (fr)
AU (1) AU6148690A (fr)
WO (1) WO1991001193A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5111312A (en) * 1989-07-18 1992-05-05 Stewart Bob W Coupling mechanism for efficient conversion of axisymmetric beam profiles into profiles suitable for diffraction-free transmission in free space
US5297156A (en) * 1990-12-20 1994-03-22 Deacon Research Method and apparatus for dual resonant laser upconversion
US5305016A (en) * 1991-12-03 1994-04-19 Xerox Corporation Traveling wave ink jet printer with drop-on-demand droplets
US6101023A (en) * 1998-09-11 2000-08-08 Northrop Grumman Corporation Line periodically poled LiNbO3 (PPLN) optical parametric oscillator (OPO-DFG-OPO) with common doubly resonant cavity
US6282014B1 (en) 1999-06-09 2001-08-28 Northrop Grumman Corporation Cascade optical parametric oscillator for down-conversion
US7612321B2 (en) * 2004-10-12 2009-11-03 Dcg Systems, Inc. Optical coupling apparatus for a dual column charged particle beam tool for imaging and forming silicide in a localized manner

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4145671A (en) * 1978-01-06 1979-03-20 University Of Southern California Time-reversed replication of a wave front
US4794344A (en) * 1986-12-01 1988-12-27 Rockwell International Corporation Injected phase conjugate laser amplifier
US4803686A (en) * 1987-08-03 1989-02-07 Trw Inc. Spatial filter with gain
US4852973A (en) * 1986-10-03 1989-08-01 Research Corporation Diffraction free arrangement
US4887885A (en) * 1986-10-03 1989-12-19 University Of Rochester Diffraction free arrangement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4050036A (en) * 1976-02-25 1977-09-20 Textron Inc. Optical system for lasers
US4879532A (en) * 1984-05-03 1989-11-07 Board Of Regents, The University Of Texas System Method and apparatus for phase conjugate optical modulation
US4865042A (en) * 1985-08-16 1989-09-12 Hitachi, Ltd. Ultrasonic irradiation system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4145671A (en) * 1978-01-06 1979-03-20 University Of Southern California Time-reversed replication of a wave front
US4852973A (en) * 1986-10-03 1989-08-01 Research Corporation Diffraction free arrangement
US4887885A (en) * 1986-10-03 1989-12-19 University Of Rochester Diffraction free arrangement
US4794344A (en) * 1986-12-01 1988-12-27 Rockwell International Corporation Injected phase conjugate laser amplifier
US4803686A (en) * 1987-08-03 1989-02-07 Trw Inc. Spatial filter with gain

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JOURNAL OF QUANTUM ELECTRONICS, Vol. QE 22, No. 8, August 1986, TSCH et al., "Image Amplification by Two and Gour Wave Mixing in Batio3, Photoregractive Crystals", pages 1493-1502. *
PHYSICAL REVIEW LETTERS, Vol. 58, No. 15, 13 April 1987, DURWIN et al., "Differaction Free Beams", pages 1499-1501. *

Also Published As

Publication number Publication date
WO1991001193A2 (fr) 1991-02-07
AU6148690A (en) 1991-02-22
US4992750A (en) 1991-02-12

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