Title:
LASER BEAM MACHINING METHOD USING MODE LOCK LASER
Document Type and Number:
Japanese Patent JP2004358486
Kind Code:
A
Abstract:
To provide a laser beam machining method which enables a reduction in thermal effects during machining and prevent a quality deterioration of a hole.
A mode-locked laser beam is emitted from a mode lock laser oscillator 1. The laser beam emitted from the mode lock laser oscillator 1 is made incident on a workpiece 9. A hole is formed to the workpiece 9. A pulse laser beam, whose pulse width is in the order of the picosecond, can be obtained by using the mode lock laser oscillator. As a result, the thermal influence can be reduced.
Inventors:
TSUNEMI AKIRA
Application Number:
JP2003156771A
Publication Date:
December 24, 2004
Filing Date:
June 02, 2003
Export Citation:
Assignee:
SUMITOMO HEAVY INDUSTRIES
International Classes:
B23K26/06; B23K26/073; B23K26/382; H01S3/00; (IPC1-7): B23K26/00; B23K26/06; H01S3/00
Attorney, Agent or Firm:
Keishiro Takahashi
Mikio Kuruyama
Mikio Kuruyama