Self-fabricated single mode waveguide in fluoride glass excited by self-channeled plasma filaments

Journal Article · Mon Sep 17 04:00:00 EDT 2007 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2779247· OSTI ID:21013620

Cho, Sung-Hak; Chang, Won-Seok; Kim, Jae-Goo; Whang, Kyoung-Hyun ^[1]

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1. Nano Machining Laboratory, Korea Institute of Machinery and Material (KIMM), 171 Jang-dong, Yuseong-Gu, Daejeon 305-343 (Korea, Republic of)

Self-fabricated permanent structure of single mode waveguide in optical fluoride glasses was demonstrated using the self-channeled plasma filament excited by a femtosecond (130 fs) Ti:sapphire laser ({lambda}{sub p}=790 nm). The photoinduced refractive index modification in ZrF{sub 4}-BaF{sub 2}-LaF{sub 3}-AlF{sub 3}-NaF glasses reached a length of approximately 10-15 mm from the input surface of the optical glass with the diameters ranging from 5 to 8 {mu}m at the input intensities of more than 1.0x10{sup 12} W/cm{sup 2}. The graded refractive index profiles were fabricated to be a symmetric form from the center of optical fluoride glass, and a maximum value of refractive index change ({delta}n) was measured to be 1.3x10{sup -2}. The beam profile of the output beam transmitted through the modified region showed that the photoinduced refractive index modification produced a permanent structure of single mode waveguide.

• OSTI ID: 21013620
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 12 Vol. 91; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALUMINIUM FLUORIDES
BARIUM FLUORIDES
BEAM PROFILES
GLASS
LANTHANUM FLUORIDES
LASER-PRODUCED PLASMA
LASERS
PLASMA FILAMENT
PLASMA PRODUCTION
REFRACTIVE INDEX
SAPPHIRE
SODIUM FLUORIDES
WAVEGUIDES
ZIRCONIUM FLUORIDES