Patent
3-dimensional micromachining with femtosecond laser pulses
Abdelkrim Tatah,Akira Fukumoto +1 more
Reads0
Chats0
TLDR
In this article, a method of treating a material by generating an ultraviolet wavelength laser beam having femtosecond pulses was proposed, where the separate laser beams of the separate beams overlap to create an intensity sufficient to treat the sample.Abstract:
A method of treating a material by generating an ultraviolet wavelength laser beam having femtosecond pulses; splitting the ultraviolet wavelength laser beam into a plurality of separate laser beams having femtosecond pulses; directing the separate laser beams onto a target point within a sample such that the femtosecond pulses of the separate beams overlap to create an intensity sufficient to treat the sample. Apparatus for treating a material that includes an ultraviolet laser for generating an ultraviolet wavelength laser beam having femtosecond pulse and directing that ultraviolet wavelength laser beam onto a beam splitter; a beam splitter for splitting the ultraviolet wave length laser beam into a plurality of separate laser beams having femtosecond pulses; directing the separate laser beams onto a target point within a sample such that the femtosecond pulses of the separate beams overlap to create an intensity sufficient to treat the sample.read more
Citations
More filters
Patent
Laser beam machining method
Fumitsugu Fukuyo,Kenshi Fukumitsu,Naoki Uchiyama,Toshimitsu Wakuda,Kazuhiro Atsumi,Kenichi Muramatsu +5 more
TL;DR: In this paper, the authors presented a laser beam machining method characterized by comprising the steps of mounting a protective tape (25) on the surface (3) of a wafer (1a), radiating laser light (L) by using the back (21) as a laser light incidence plane with an optical converging point (P) positioned in a substrate (15), forming a melt processing region (13) for melt processing by multiphoton absorption.
Patent
Laser processing method and laser processing apparatus
TL;DR: In this article, the authors present a method for cutting a work without producing a fusing and a cracking out of a predetermined cutting line on the surface of the work, where a pulse laser beam is radiated on the predetermined cut line, and a modified area is formed inside the work along the determined cut line by moving the condensed point along the predetermined cutoff point, whereby the work can be cut with a rather small force by starting from the modified area.
Patent
Laser processing method
TL;DR: In this article, a laser processing method which can highly accurately cut objects to be processed having various laminate structures is provided, where the object is cut along the starting point region for cutting, the object 1 can be cut with a high accuracy.
Patent
Energy efficient, laser-based method and system for processing target material
TL;DR: In this article, an energy-efficient method and system for processing target material such as microstructures in a microscopic region without causing undesirable changes in electrical and/or physical characteristics of material surrounding the target material is provided.
Patent
Apparatus, methods and processes for sorting particles and for providing sex-sorted animal sperm
Gary Durack,Jeffrey D. Wallace,Gary P. Vandre,Lon A. Westfall,Jeremy T. Hatcher,Niraj V. Nayak +5 more
TL;DR: In this article, a multi-channel system for classifying particles in a mixture of particles according to one or more characteristics including a common source of electromagnetic radiation for producing a beam of radiation and a beam splitter for producing multiple beams of radiation for each interrogation location associated with each flow channel of the system.
References
More filters
Patent
Two-photon laser microscopy
TL;DR: In this paper, a laser scanning microscope produces molecular excitation in a target material by simultaneous absorption of two photons to thereby provide intrinsic three-dimensional resolution, which is particularly useful in photolytic release of caged effector molecules.
PatentDOI
Ti:sapphire-pumped high repetition rate femtosecond optical parametric oscillator
TL;DR: A broadly tunable femtosecond optical parametric oscillator (OPO) based on KTiOPO(4) that is externally pumped by a self-mode-locked Ti:sapphire laser is described.
Patent
Sub-surface marking
TL;DR: In this article, a method and apparatus for providing a body of material (14) with sub-surface mark in the form of an area of increased opacity to electromagnetic radiation is described.
Patent
Method, medium and apparatus for producing three dimensional figure product
TL;DR: In this paper, a three-dimensional figure is formed in situ in a medium having two active components by causing two radiation beams to intersect in the media, and dissimilar components are selected to respond to the simultaneous presence of the beams and to either react or to produce reactants which render the intersection of the two beams physically sensible or distinguishable.
Patent
Three-dimensional optical memory
TL;DR: In this paper, an active medium, typically a photochromic material and more typically spirbenzopyran, maintained in a three-dimensional matrix, typically of polymer, is illuminated in selected regions by two UV laser light beams.