title: Broadband and high-brightness light source: glass-clad Ti:sapphire crystal fiber.
abstract: High-brightness near-infrared broadband amplified spontaneous emission (ASE) was generated by glass-clad Ti:sapphire crystal fibers, which were developed using the co-drawing laser-heated pedestal growth method. As much as 29.2 mW of ASE power was generated using 520 nm laser diodes as the excitation source on an a-cut, 18 μm core-diameter Ti:sapphire crystal fiber (CF). The 3 dB bandwidth was 163.8 nm, and the radiance was 53.94  W·mm(-2) sr(-1). The propagation loss of the glass-clad sapphire CF measured using the cutback method was 0.017  cm(-1) at 780 nm. For single-mode applications, more than 100 μW of power was coupled into a SM600 single-mode fiber.
authors.forename: Shih-Chang
authors.initials: SC
authors.lastname: Wang
authors.forename: Teng-I
authors.initials: TI
authors.lastname: Yang
authors.forename: Dong-Yo
authors.initials: DY
authors.lastname: Jheng
authors.forename: Chun-Yang
authors.initials: CY
authors.lastname: Hsu
authors.forename: Tzu-Te
authors.initials: TT
authors.lastname: Yang
authors.forename: Tuan-Shu
authors.initials: TS
authors.lastname: Ho
authors.forename: Sheng-Lung
authors.initials: SL
authors.lastname: Huang