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Understanding How Femtosecond Laser Waveguide Fabrication in Glasses Works

Description: In order to understand the physical processes associated with fs-laser waveguide writing in glass, the effects of the laser repetition rate, the material composition and feature size were studied. The resulting material changes were observed by collecting Raman and fluorescence spectra with a confocal microscope. The guiding behavior of the waveguides was evaluated by measuring near field laser coupling profiles in combination with white light microscopy. Waveguides and Bragg gratings were fabr… more
Date: May 11, 2006
Creator: Reichman, W J
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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A Spectroscopic Comparison of Femtosecond Laser Modified Fused Silica using kHz and MHz Laser Systems.

Description: Waveguides were written in fused silica using both a femtosecond fiber laser with a 1 MHz pulse repetition rate and a femtosecond amplified Ti:sapphire laser with a 1 kHz repetition rate. Confocal Raman and fluorescence microscopy were used to study structural changes in the waveguides written with both systems. A broad fluorescence band, centered at 650 nm, associated with non-bridging oxygen hole center (NBOHC) defects was observed after waveguide fabrication with the MHz laser. With the kHz … more
Date: September 29, 2005
Creator: Reichman, W J; Krol, D M; Shah, L; Yoshino, F; Arai, A; Eaton, S M et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Femtosecond laser writing of waveguide structures in sodium calcium silicate glasses

Description: Waveguides were written in soda lime silicate glasses with a composition of xNa{sub 2}O xCaO (1-2x)SiO{sub 2}, where x = 15 and 20, using an amplified femtosecond laser. The waveguides formed around, not inside the exposed regions. This is similar to the waveguide behavior our group first observed in a phosphate glass, Schott IOG-1, and is distinctly different from fused silica in which the waveguides are inside the exposed regions. This data supports the rapid quenching theory, i.e. that the e… more
Date: December 13, 2004
Creator: Reichman, W J; Click, C A & Krol, D M
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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