Modelling of lead-bismuth gallate glass ultra-flatted normal dispersion photonic crystal fiber infiltrated with tetrachloroethylene for high coherence mid-infrared supercontinuum generation
Tác giả: Lanh Chu Van, Hieu Van Le, Nguyen Dang Nguyen, Ngoc Vo Thi Minh, Quang Ho Dinh, Van Thuy Hoang, Thuy Nguyen Thi and Bien Chu Van
Laser Physics
Quyển: 32 Trang: 055102
Năm xuất bản: 3/2022
Tóm tắt
We report a numerical study on mid-infrared (IR) supercontinuum (SC) generation in the regime
of all normal dispersion using lead bismuth gallate glass photonic crystal fiber. This fiber allows
the changing of dispersion from anomalous dispersion to ultra-flat normal dispersion in the
wavelength range of over 930 nm by filling its cladding holes with C2Cl4. Using a 12.5 kW laser
pulse at 2.8 μm as a pump source, we demonstrate that a broad and highly coherent SC
generation spectrum is generated in the wavelength range of 1.2 μm–3.4 μm with the effects of
vacuum noise. However, pulse-to-pulse relative intensity noise significantly decreases the
coherence. These interesting optical properties make the proposed C2Cl4—infiltrated fiber
highly promising for various applications in the mid-IR regime, particularly, spectroscopy,
optical coherence tomography, and metrology
Từ khóa
photonic crystal fiber, supercontinuum generation, normal dispersion, liquid, mid-infrared regime
