Mid-IR supercontinuum generated in low-dispersion Ge-on-Si waveguides pumped by sub-ps pulses | Zendy

Minghui Yang | Zendy; Yuhao Guo | Zendy; Jing Wang | Zendy; Zhaohong Han | Zendy; Kazumi Wada | Zendy; Lionel C. Kimerling | Zendy; Anu Agarwal | Zendy; Jürgen Michel | Zendy; Guifang Li | Zendy; Lin Zhang | Zendy

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Mid-IR supercontinuum generated in low-dispersion Ge-on-Si waveguides pumped by sub-ps pulses

Author(s) -

Minghui Yang,

Yuhao Guo,

Jing Wang,

Zhaohong Han,

Kazumi Wada,

Lionel C. Kimerling,

Anu Agarwal,

Jürgen Michel,

Guifang Li,

Lin Zhang

Publication year - 2017

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.25.016116

Subject(s) - supercontinuum , materials science , optics , broadband , optoelectronics , dispersion (optics) , waveguide , nonlinear optics , self phase modulation , laser , photonic crystal fiber , wavelength , physics

Ge-on-Si is an attractive material platform for mid-IR broadband sources on a chip because of its wide transparency window, high Kerr nonlinearity and CMOS compatibility. We present a low-loss Ge-on-Si waveguide with flat and low dispersion from 3 to 11 µm, which enables a coherent supercontinuum from 2 to 12 µm, generated using a sub-ps pulsed pump. We show that 700-fs pump pulses with a low peak power of 400 W are needed to generate such a wide supercontinuum, and the waveguide length is around 5.35 mm.

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