Three-dimensional recording and structuring of chalcogenide glasses by femtosecond pulses

Saulius Juodkazis, Toshiaki Kondo, Andrei Rode, Shigeki Matsuo, Hiroaki Misawa

研究成果: Conference article査読

10 被引用数 (Scopus)

抄録

We report on three-dimensional (3D) holographic recording in As 2S3 glass using 800 nm wavelength, 150 fs duration pulses. Diffractive beam splitter was used to generate 2-5 beams which were then focused for recording by objective lens of numerical aperture NA = 0.75. The recorded 3D hologram was read out by diffraction of 632 nm HeNe laser beam confirming the expected pattern of holograms. The mechanism of photo-darkening and optical damaging of As2S3 glass and dielectrics in general is discussed. Two-photon absorption cross-section, σ2 = 74.6 × 10-50 cm4/s, was determined by transmission for pulses of 150 fs and 800 nm wavelength. Also, it is demonstrated that the optical damage threshold scales as the bandgap energy for the fluorides. Nano-/ micro-structuring of As2S3 glass by ablation in air will be also demonstrated. High fluence (> 5 J/cm2) irradiation of the 800 nm wavelength, 150 fs duration pulses was used to ablate As 2S3 glass. Self-organized growth of the fibers, rods, and microsphere-type structures was observed. Composition of the nano-/micro-structured material was close to that of the source As 2S3 glass (with up to 20% surplus of sulphur in nano-rods). Straight rods as thin as 20 nm in diameter and over 1 μm-long were obtained. Application potential of nano-/micro-structured As 2S3 glass is discussed.

本文言語English
論文番号29
ページ(範囲)179-184
ページ数6
ジャーナルProceedings of SPIE - The International Society for Optical Engineering
5662
DOI
出版ステータスPublished - 2004
外部発表はい
イベントFifth International Symposium on Laser Precision Microfabrication - Nara, Japan
継続期間: 2004 5月 112004 5月 14

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学

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