Title: System and method for ablation assisted nanostructure formation for graded index surfaces for optics

Abstract

A system and method is disclosed for forming a graded index (GRIN) on a substrate. In one implementation the method may involve applying a metal layer to the substrate. A fluence profile of optical energy applied to the metal layer may be controlled to substantially ablate the metal layer to create a vaporized metal layer. The fluence profile may be further controlled to control a size of metal nanoparticles created from the vaporized metal layer as the vaporized metal layer condenses and forms metal nanoparticles, the metal nanoparticles being deposited back on the substrate to form a GRIN surface on the substrate.

Inventors:

Yoo, Jae Hyuck; Feigenbaum, Eyal

Issue Date:

2022-12-13

Research Org.:

Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1986927

Patent Number(s):

11525945

Application Number:

16/016,105

Assignee:

Lawrence Livermore National Security, LLC (Livermore, CA)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29D - PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE

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B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING

B23K2101/34 - Coated articles {, e.g. plated or painted
B23K2103/08 - Non-ferrous metals or alloys
B23K2103/14 - Titanium or alloys thereof
B23K2103/54 - {Glass}
B23K26/0006 - {taking account of the properties of the material involved
B23K26/0622 - by shaping pulses
B23K26/0624 - {using ultrashort pulses, i.e. pulses of 1ns or less}
B23K26/0626 - {Energy control of the laser beam
B23K26/082 - Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
B23K26/0869 - {Devices involving movement of the laser head in at least one axial direction}
B23K26/352 - for surface treatment
B23K26/3584 - {Increasing rugosity, e.g. roughening}
B23K26/362 - Laser etching
B23K26/40 - taking account of the properties of the material involved

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29D - PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE

B29D11/00355 - {with a refractive index gradient}

G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS

G02B1/12 - by surface treatment, e.g. by irradiation
G02B3/02 - with non-spherical faces

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DOE Contract Number:  

AC52-07NA27344

Resource Type:

Patent

Resource Relation:

Patent File Date: 06/22/2018

Country of Publication:

United States

Language:

English