Octave-spanning supercontinuum generation in infrared by MoS2-filled hollow core fiber
- Octave-spanning supercontinuum generation in infrared by MoS2-filled hollow core fiber
- 우덕하; 김재헌; 이관일; 이택진; 김철기; 유용상; 송현석; 조영호; 박병호; 박수빈; 김효석; Hyo-suk Kim; Youngchul Chung; Hyung Min Kim
- supercontinuum; MoS2; Nonlinear Optics
- Issue Date
- Journal of the Korean Physical Society
- VOL 77, NO 11-L935
- We report the generation of an infrared (IR) supercontinuum spanning over an octave using a centimeter (6 cm) length of photonic crystal fiber (PCF) filled with MoS2, which has a considerably large nonlinear refractive index. The fiber is pumped with a femto-second laser pulse with an infrared wavelength of 2080 nm, pumping intensity of 336.76 GW/cm2, peak power of 0.75 GW, and pulse width of 150 fs. With the assistance of highly nonlinear MoS2, a supercontinuum bandwidth that remarkably extends from 1400 to 2700 nm below 20 dB is achieved. This supercontinuum bandwidth significantly exceeds the previously reported spectra for other nonlinear glass-based optical fibers, even with a fairly short fiber length. Furthermore, this short fiber length allows PCF to be more efficiently utilized, and is expected to be suitable for various applications, such as broadband light source through liquid-based fibers and waveguide-based optical communications, especially in the IR region.
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