Octave-spanning supercontinuum generation in infrared by MoS2-filled hollow core fiber

Title
Octave-spanning supercontinuum generation in infrared by MoS2-filled hollow core fiber
Authors
우덕하김재헌이관일이택진김철기유용상송현석조영호박병호박수빈김효석Hyo-suk KimYoungchul ChungHyung Min Kim
Keywords
supercontinuum; MoS2; Nonlinear Optics
Issue Date
2020-12
Publisher
Journal of the Korean Physical Society
Citation
VOL 77, NO 11-L935
Abstract
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.
URI
http://pubs.kist.re.kr/handle/201004/72296
ISSN
0374-4884
Appears in Collections:
KIST Publication > Article
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