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  • A hollow beam supercontinuum generation by the supermode superposition in a GeO2 doped triangular-core photonic crystal fiber.

A hollow beam supercontinuum generation by the supermode superposition in a GeO2 doped triangular-core photonic crystal fiber.

Optics express (2012-10-06)
Xin-ben Zhang, Xian Zhu, Xiang Chen, Hai-qing Li, Jing-gang Peng, Neng-li Dai, Jin-yan Li
ABSTRACT

A GeO2 doped triangular-core photonic-crystal fiber (PCF) is designed and fabricated to allow the generation of a hollow beam through a nonlinear-optical transformation by femtosecond pulses at 1040 nm from a high power Yb-doped PCF laser oscillator. The hollow beam supercontinuum is obtained at far field by adjusting incident light polarization to excite the high order supermode, behaving as a mode convertor. The supercontinuum ranging from 540 to 1540 nm is achieved with an average power of 1.04 W.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Germanium(IV) oxide, powder, 99.999% trace metals basis
Sigma-Aldrich
Germanium(IV) oxide, ≥99.99% trace metals basis
Sigma-Aldrich
Germanium(IV) oxide, (crystalline powder), 99.998% trace metals basis