Fs Laser Fabrication of Photonic Structures in Glass: the Role of Glass Composition
The use of fs lasers to directly write photonic structures inside a glass has great potential as a fabrication method for three-dimensional all-optical integrated components. The ability to use this technique with different glass compositions--specifically tailored for a specific photonics application--is critical to its successful exploitation. Consequently, it is important to understand how glass composition effects waveguide fabrication with fs laser pulses and how different glasses are structurally modified after exposure to fs laser pulses. We have used confocal laser spectroscopy to monitor the changes in glass structure that are associated with waveguide fabrication. Using a low power continuous wave (cw) Ar laser as excitation source we have measured both Raman and fluorescence spectra of the modified regions. Raman spectroscopy provides us with information on the network structure, whereas fluorescence measurements reveal the presence of optically active point defects in the glass. In this paper we review our work on fs-laser fabrication and characterization of photonic structures in glass and discuss the effect of glass composition on processing parameters and structural modification.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 15014312
- Report Number(s):
- UCRL-PROC-205127; TRN: US200803%%582
- Resource Relation:
- Conference: Presented at: Laser Precision Microfabrication 2004, Nara, Japan, May 09 - May 14, 2004
- Country of Publication:
- United States
- Language:
- English
Similar Records
Waveguide Fabrication in Fused Silica Using Tightly Focused Femtosecond Laser Pulses
Structural features of silver-doped phosphate glasses in zone of femtosecond laser-induced modification