GB2044948B - Power density of a laser beam heater - Google Patents

Power density of a laser beam heater

Info

Publication number
GB2044948B
GB2044948B GB7906938A GB7906938A GB2044948B GB 2044948 B GB2044948 B GB 2044948B GB 7906938 A GB7906938 A GB 7906938A GB 7906938 A GB7906938 A GB 7906938A GB 2044948 B GB2044948 B GB 2044948B
Authority
GB
United Kingdom
Prior art keywords
laser beam
power density
beam heater
heater
density
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.)
Expired
Application number
GB7906938A
Other versions
GB2044948A (en
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.)
BOC Ltd
Original Assignee
BOC Ltd
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 BOC Ltd filed Critical BOC Ltd
Priority to GB7906938A priority Critical patent/GB2044948B/en
Publication of GB2044948A publication Critical patent/GB2044948A/en
Application granted granted Critical
Publication of GB2044948B publication Critical patent/GB2044948B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B23K26/073—Shaping the laser spot
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0019—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors)
    • G02B19/0023—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors) at least one surface having optical power
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatment Of Articles (AREA)
  • Laser Beam Processing (AREA)
GB7906938A 1979-02-27 1979-02-27 Power density of a laser beam heater Expired GB2044948B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7906938A GB2044948B (en) 1979-02-27 1979-02-27 Power density of a laser beam heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7906938A GB2044948B (en) 1979-02-27 1979-02-27 Power density of a laser beam heater

Publications (2)

Publication Number Publication Date
GB2044948A GB2044948A (en) 1980-10-22
GB2044948B true GB2044948B (en) 1983-10-05

Family

ID=10503475

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7906938A Expired GB2044948B (en) 1979-02-27 1979-02-27 Power density of a laser beam heater

Country Status (1)

Country Link
GB (1) GB2044948B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4475027A (en) * 1981-11-17 1984-10-02 Allied Corporation Optical beam homogenizer
EP0194820A3 (en) * 1985-03-08 1988-10-19 Oscar Moreno Gil Radiation collector and reflector
JPS6240986A (en) * 1985-08-20 1987-02-21 Fuji Electric Corp Res & Dev Ltd Laser beam machining method
US6752501B2 (en) 2001-04-23 2004-06-22 Dee E. Willden Lensless laser focusing device
EP1400832B1 (en) 2002-09-19 2014-10-22 Semiconductor Energy Laboratory Co., Ltd. Beam homogenizer and laser irradiation apparatus and method of manufacturing semiconductor device
US7327916B2 (en) 2003-03-11 2008-02-05 Semiconductor Energy Laboratory Co., Ltd. Beam Homogenizer, laser irradiation apparatus, and method of manufacturing a semiconductor device
SG137674A1 (en) 2003-04-24 2007-12-28 Semiconductor Energy Lab Beam homogenizer, laser irradiation apparatus, and method for manufacturing semiconductor device
US7245802B2 (en) 2003-08-04 2007-07-17 Semiconductor Energy Laboratory Co., Ltd. Beam homogenizer, laser irradiation apparatus and method for manufacturing semiconductor device
US7169630B2 (en) 2003-09-30 2007-01-30 Semiconductor Energy Laboratory Co., Ltd. Beam homogenizer, laser irradiation apparatus, and method for manufacturing semiconductor device
US7387954B2 (en) 2004-10-04 2008-06-17 Semiconductor Energy Laboratory Co., Ltd. Beam homogenizer, laser irradiation apparatus, and method for manufacturing semiconductor device
US7664365B2 (en) 2004-10-27 2010-02-16 Semiconductor Energy Laboratory Co., Ltd. Beam homogenizer, and laser irradiation method, laser irradiation apparatus, and laser annealing method of non-single crystalline semiconductor film using the same

Also Published As

Publication number Publication date
GB2044948A (en) 1980-10-22

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee