Fabrication and characterization of femtosecond laser written waveguides in chalcogenide glass

Hughes, MA; Yang, W; Hewak, D

Abstract

The authors describe the fabrication of buried waveguides in a highly nonlinear chalcogenide glass,
gallium lanthanum sulfide, using focused femtosecond laser pulses. Through optical characterization
of the waveguides, they have proposed a formation mechanism and provide comparisons to previous
work. Tunneling has been identified as the dominant nonlinear absorption mechanism in the
formation of the waveguides. Single mode guidance at 633 nm has been demonstrated. The writing
parameters for the minimum propagation loss of 1.47 dB/cm are 0.36 �J pulse energy and
50 �m/ s scanning speed.

Citation

Hughes, M., Yang, W., & Hewak, D. (2007). Fabrication and characterization of femtosecond laser written waveguides in chalcogenide glass. Applied Physics Letters, 90, 131113. https://doi.org/10.1063/1.2718486

• Journal Article Type: Article
• Publication Date: Jan 1, 2007
• Deposit Date: Nov 10, 2015
• Journal: Applied Physics Letters
• Print ISSN: 0003-6951
• Electronic ISSN: 1077-3118
• Publisher: AIP Publishing
• Volume: 90
• Pages: 131113
• DOI: https://doi.org/10.1063/1.2718486
• Publisher URL: http://dx.doi.org/10.1063/1.2718486
• Related Public URLs: http://scitation.aip.org/content/aip/journal/apl
• Additional Information: Funders : MEXT