Title :
Waveguide in Tm3+-Doped Chalcogenide Glass Fabricated by Femtosecond Laser Direct Writing
Author :
Junli Wang ; Borong He ; Shixun Dai ; Jiangfeng Zhu ; Zhiyi Wei
Author_Institution :
Sch. of Phys. & Optoelectron. Eng., Xidian Univ., Xi´an, China
Abstract :
We fabricated a buried single line waveguide within a depth of 100 μm below the Tm3+-doped 75GeS215Ga2S310CsI (GGSI) glass substrate surface using a single line approach by femtosecond laser direct writing. The near field profile of the guided modes and the propagation loss of the fabricated waveguides were measured and discussed. Single mode guidance at 1039 nm has been demonstrated. The writing parameters for the minimum propagation loss of 0.86 dB/cm are 0.8-μJ pulse energy and 100-μm/s scanning speed. This waveguide will be a good candidate for the waveguide laser and passive optical components in the mid-infrared application field.
Keywords :
chalcogenide glasses; germanium compounds; laser materials processing; optical fabrication; optical glass; optical losses; optical waveguides; thulium; waveguide lasers; GGSI; GeS2Ga2S3CsI:Tm3+; Tm3+-doped 75GeS215Ga2S310CsI glass substrate surface; Tm3+-doped chalcogenide glass fabrication; buried single line waveguide; depth 100 mum; energy 0.8 muJ; femtosecond laser direct writing; guided mode; mid-infrared application field; minimum propagation loss; near field profile; passive optical components; pulse energy; single line approach; single mode guidance; waveguide laser; wavelength 1039 nm; writing parameters; Glass; Laser modes; Measurement by laser beam; Optical pulses; Optical waveguides; Ultrafast optics; Waveguide lasers; Femtosecond laser direct writing; Single line waveguide; Thulium-doped chalcogenide glass; femtosecond laser direct writing; thulium-doped chalcogenide glass;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2014.2365619
