Formation of nano-voids in transparent dielectrics by femtosecond lasers

Eugene G. Gamaly; Saulius Juodkazis; Hiroaki Misawa; Barry Luther-Davies; Andrei V. Rode; Ludovic Hallo; Philippe Nicolai; Vladimir T. Tikhonchuk

doi:10.1016/j.cap.2007.10.071

Formation of nano-voids in transparent dielectrics by femtosecond lasers

Eugene G. Gamaly^*, Saulius Juodkazis, Hiroaki Misawa, Barry Luther-Davies, Andrei V. Rode, Ludovic Hallo, Philippe Nicolai, Vladimir T. Tikhonchuk

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

Formation of three-dimensional (3D) patterns of 0.2-0.5 μm diameter voids inside a transparent solid has been demonstrated. The nano-voids could be created with a spacing ∼2 μm thus suggesting the possibility of permanent 3D optical memory with density ∼100 Gbit/cm³. Extremely high pressures of ∼10 TPa and temperatures up to 10⁵ K can be produced by a single sub-picosecond laser pulse tightly focused inside transparent dielectrics. Analysis of the size of the void and the shock affected zone as a function of the deposited energy shows that the experimental results can be explicitly understood on the basis of conservation laws and be modeled by plasma hydrodynamics. Therefore, the size of the void can be controlled and predicted by proper focusing conditions and laser parameters.

Original language	English
Pages (from-to)	412-415
Number of pages	4
Journal	Current Applied Physics
Volume	8
Issue number	3-4
DOIs	https://doi.org/10.1016/j.cap.2007.10.071
Publication status	Published - May 2008

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title = "Formation of nano-voids in transparent dielectrics by femtosecond lasers",

abstract = "Formation of three-dimensional (3D) patterns of 0.2-0.5 μm diameter voids inside a transparent solid has been demonstrated. The nano-voids could be created with a spacing ∼2 μm thus suggesting the possibility of permanent 3D optical memory with density ∼100 Gbit/cm3. Extremely high pressures of ∼10 TPa and temperatures up to 105 K can be produced by a single sub-picosecond laser pulse tightly focused inside transparent dielectrics. Analysis of the size of the void and the shock affected zone as a function of the deposited energy shows that the experimental results can be explicitly understood on the basis of conservation laws and be modeled by plasma hydrodynamics. Therefore, the size of the void can be controlled and predicted by proper focusing conditions and laser parameters.",

keywords = "Dielectric breakdown, Femtosecond laser microfabrication, Nano-structuring, Sapphire, Shock waves",

author = "Gamaly, {Eugene G.} and Saulius Juodkazis and Hiroaki Misawa and Barry Luther-Davies and Rode, {Andrei V.} and Ludovic Hallo and Philippe Nicolai and Tikhonchuk, {Vladimir T.}",

year = "2008",

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doi = "10.1016/j.cap.2007.10.071",

language = "English",

volume = "8",

pages = "412--415",

journal = "Current Applied Physics",

issn = "1567-1739",

publisher = "Elsevier B.V.",

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T1 - Formation of nano-voids in transparent dielectrics by femtosecond lasers

AU - Gamaly, Eugene G.

AU - Juodkazis, Saulius

AU - Misawa, Hiroaki

AU - Luther-Davies, Barry

AU - Rode, Andrei V.

AU - Hallo, Ludovic

AU - Nicolai, Philippe

AU - Tikhonchuk, Vladimir T.

PY - 2008/5

Y1 - 2008/5

N2 - Formation of three-dimensional (3D) patterns of 0.2-0.5 μm diameter voids inside a transparent solid has been demonstrated. The nano-voids could be created with a spacing ∼2 μm thus suggesting the possibility of permanent 3D optical memory with density ∼100 Gbit/cm3. Extremely high pressures of ∼10 TPa and temperatures up to 105 K can be produced by a single sub-picosecond laser pulse tightly focused inside transparent dielectrics. Analysis of the size of the void and the shock affected zone as a function of the deposited energy shows that the experimental results can be explicitly understood on the basis of conservation laws and be modeled by plasma hydrodynamics. Therefore, the size of the void can be controlled and predicted by proper focusing conditions and laser parameters.

AB - Formation of three-dimensional (3D) patterns of 0.2-0.5 μm diameter voids inside a transparent solid has been demonstrated. The nano-voids could be created with a spacing ∼2 μm thus suggesting the possibility of permanent 3D optical memory with density ∼100 Gbit/cm3. Extremely high pressures of ∼10 TPa and temperatures up to 105 K can be produced by a single sub-picosecond laser pulse tightly focused inside transparent dielectrics. Analysis of the size of the void and the shock affected zone as a function of the deposited energy shows that the experimental results can be explicitly understood on the basis of conservation laws and be modeled by plasma hydrodynamics. Therefore, the size of the void can be controlled and predicted by proper focusing conditions and laser parameters.

KW - Dielectric breakdown

KW - Femtosecond laser microfabrication

KW - Nano-structuring

KW - Sapphire

KW - Shock waves

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U2 - 10.1016/j.cap.2007.10.071

DO - 10.1016/j.cap.2007.10.071

M3 - Article

SN - 1567-1739

VL - 8

SP - 412

EP - 415

JO - Current Applied Physics

JF - Current Applied Physics

IS - 3-4

ER -

Formation of nano-voids in transparent dielectrics by femtosecond lasers

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