Porous glass density tailoring by femtosecond laser pulses
| Autor: | R. A. Zakoldaev, Vadim P. Veiko, Zhengyan Li, M. M. Sergeev, Lijing Zhong |
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| Rok vydání: | 2020 |
| Předmět: |
Work (thermodynamics)
Range (particle radiation) Materials science Physics::Optics Rarefaction 02 engineering and technology Porous glass 021001 nanoscience & nanotechnology Laser 01 natural sciences Molecular physics Atomic and Molecular Physics and Optics Matrix density Electronic Optical and Magnetic Materials law.invention 010309 optics law 0103 physical sciences Femtosecond Electrical and Electronic Engineering 0210 nano-technology Refractive index |
| Zdroj: | Optical and Quantum Electronics. 52 |
| ISSN: | 1572-817X 0306-8919 |
| DOI: | 10.1007/s11082-019-2163-7 |
| Popis: | In this work, a new domain of femtosecond laser-induced densification was exploited as a method for space-selective control of porous glass matrix density. The estimated refractive index change (Δn) of laser-induced modified region shows a core-cladding structure with the Δn in the range of 10−4–10−2 depending on laser pulse energy and translating speed. The approximate linear relationship between glass matrix density vs Δn is theoretically proved by employing the Lorentz–Lorenz equation. Thus, the positive and negative Δn of modified region are interpreted as the densification and rarefaction of glass matrix, respectively. |
| Databáze: | OpenAIRE |
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