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Author:

Yan, Tianyang (Yan, Tianyang.) | Ji, Lingfei (Ji, Lingfei.) (Scholars:季凌飞) | Ma, Rui (Ma, Rui.) | Amina (Amina.) | Lin, Zhenyuan (Lin, Zhenyuan.)

Indexed by:

EI Scopus SCIE

Abstract:

The ability of loosely focused picosecond laser to induce filamentation (4.8 times the Rayleigh length) in sapphire was confirmed. The morphology and microstructure of the filamentary traces under typical pulse energy were studied, in which the colorful birefringence phenomenon and damage defects were detected in sapphire. Irreversible ceramic-like polycrystalline microstructures were formed in filamentary traces, and the phase transition from alpha-Al2O3 to gamma-Al2O3 directly reflected the thermal effect of picosecond laser filamentation. According to the filamentary characteristics, a continuous filamentary channel with a uniform diameter of 33 mu m and a length of 7443 mu m was obtained by gradually raising the focal position. The research provides first-hand information for the high throughput micro-cutting, micro drilling and thin slicing of sapphire based on ultrafast laser non-linear effects.

Keyword:

Sapphire Modification Phase transition Picosecond laser Filamentation

Author Community:

  • [ 1 ] [Yan, Tianyang]Beijing Univ Technol, Ultrafast Laser & Precis Mfg Res Ctr, Inst Laser Engn, Beijing 100124, Peoples R China
  • [ 2 ] [Ji, Lingfei]Beijing Univ Technol, Ultrafast Laser & Precis Mfg Res Ctr, Inst Laser Engn, Beijing 100124, Peoples R China
  • [ 3 ] [Ma, Rui]Beijing Univ Technol, Ultrafast Laser & Precis Mfg Res Ctr, Inst Laser Engn, Beijing 100124, Peoples R China
  • [ 4 ] [Amina]Beijing Univ Technol, Ultrafast Laser & Precis Mfg Res Ctr, Inst Laser Engn, Beijing 100124, Peoples R China
  • [ 5 ] [Lin, Zhenyuan]Beijing Univ Technol, Ultrafast Laser & Precis Mfg Res Ctr, Inst Laser Engn, Beijing 100124, Peoples R China
  • [ 6 ] [Yan, Tianyang]Minist Educ, Key Lab Transscale Laser Mfg Technol, Beijing 100124, Peoples R China
  • [ 7 ] [Ji, Lingfei]Minist Educ, Key Lab Transscale Laser Mfg Technol, Beijing 100124, Peoples R China
  • [ 8 ] [Ma, Rui]Minist Educ, Key Lab Transscale Laser Mfg Technol, Beijing 100124, Peoples R China
  • [ 9 ] [Amina]Minist Educ, Key Lab Transscale Laser Mfg Technol, Beijing 100124, Peoples R China
  • [ 10 ] [Lin, Zhenyuan]Minist Educ, Key Lab Transscale Laser Mfg Technol, Beijing 100124, Peoples R China

Reprint Author's Address:

  • 季凌飞

    [Ji, Lingfei]Beijing Univ Technol, Ultrafast Laser & Precis Mfg Res Ctr, Inst Laser Engn, Beijing 100124, Peoples R China

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Source :

CERAMICS INTERNATIONAL

ISSN: 0272-8842

Year: 2020

Issue: 10

Volume: 46

Page: 16074-16079

5 . 2 0 0

JCR@2022

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:169

Cited Count:

WoS CC Cited Count: 11

SCOPUS Cited Count: 12

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 12

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