High power broadband mid-infrared supercontinuum fiber laser using a novel chalcogenide AsSe2 photonic crystal fiber

We have created a PCF with square shaped core using chalcogenide material As38Se62 as core and air holes in IR region, which yield very high optical non linearity of 1290 W−1Km−1 at 3.5 μm, further gives a flat dispersion profile. The fiber has been used for numerically simulate SCG using low power pump pulse width (TFWHM) at 50 fs duration at 3.5 μm. At the end of 10 mm fiber, SC broadening of about 2000 to 12000 nm can be achieved with pulses of 4200 W peak power.

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“…Nonlinearity of material totally depends on the nonlinear refractive index of applied material is given as follows [16] ( )…”

Section: ( ) ( )mentioning

confidence: 99%

“…In above formula, is defined for nonlinear refractive index of As 38 Se 62 glass and contains value 1.13 x 10 -17 m 2 W -1 [16]. The numerical value of γ can be increased by choosing materials with large nonlinear refractive index and PCF designs with less effective mode area.…”

Section: ( ) ( )mentioning

confidence: 99%

Mid-IR supercontinuum generation in dispersion flattened As₃₈Se₆₂ chalcogenide photonic crystal fiber

Khamaru

Sharma²,

Tomer³

et al. 2023

J. Phys.: Conf. Ser.

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“…As the photodarkening effect of the fiber can be improved by doping with ions, the photonic crystal fiber structure has largemode field properties that can withstand high power without optical damage and ensure good beam quality. Ion-doped largemode field photonic crystal fibers have attracted significant attentions in high peak power picosecond ultrafast laser amplifiers (Zervas and Codemard, 2014b;Diouf et al, 2016;Kabir and Razzak, 2018;Li et al, 2019b). The most common doping ion in photonic crystal fiber is ytterbium ion.…”

Section: Ytterbium-doped Ionsmentioning

confidence: 99%

Ion-Doped Photonic Crystal Fiber Lasers

Hou

Xie

et al. 2021

Front. Chem.

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Compared with conventional solid-state lasers, fiber lasers have the advantages of small size, simple cooling system, and good output beam quality, enabling them an extended service lifetime in industrialized environments. Periodically arranged photonic crystals have been the most important gain medium for high-power laser applications, which overcame the problems in fiber lasers such as small mode field, low degree of nonlinearity, and non-adjustable dispersion. In this mini-review, we summarize the recent advances of typical ion-doped photonic crystal fiber lasers doped, discuss the challenges, and provide an outlook on the future developments in ion-doped photonic crystal fiber lasers.

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“…For more, a type of Chg AsSe2 for broadband MIR light source was designed. Broadband coherent SC generation with more than 3 octave spanning from 1.7 to 14 μm achieved (Diouf et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Design of all-normal dispersion with Ge11.5As24Se64.5/Ge20Sb15Se65 chalcogenide PCF pumped at 1300 nm for supercontinuum generation

2021

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Supercontinuum spectrum generation is a process in which laser beam in femtoseconds and high power (kilowatts) is converted into a broad-spectrum beam of light after passing through a specific environment. Of course, achieving this range comes with many limitations. In this paper, photonic crystal fibers are used as a substrate for input pulse due to the ability to control dispersion and loss, and creating single-mode operating conditions. One of the main factors for the formation of supercontinuum spectra of injection pulses is maintaining the nonlinear performance of this type of fiber by controlling the effective mode area and also using chalcogenides (nonlinear coefficients about 100 times higher than silica) in their structure. In the proposed structure, a photonic crystal fiber with silica base element and air cavities with hexagonal structure with the center of Ge11.5As24Se64.5 chalcogenide element have been used to provide the nonlinear property of the structure. Also, in this structure, a ring of Ge20Sb15Se65 chalcogenide elements has been used to reduce the effective mode region and create a flat dispersion curve at a wavelength of 1300 nm (second telecommunication window). The input pulse power is 10 kW and its width is 50 femtoseconds, which has caused the range of the supercontinuum from 800 nm to 1900 nm. This structure can be used to provide the required wavelengths as a carrier in a wavelength division multiplexing (WDM).

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High power broadband mid-infrared supercontinuum fiber laser using a novel chalcogenide AsSe2 photonic crystal fiber

Cited by 37 publications

References 22 publications

Mid-IR supercontinuum generation in dispersion flattened As₃₈Se₆₂ chalcogenide photonic crystal fiber

Mid-IR supercontinuum generation in dispersion flattened As₃₈Se₆₂ chalcogenide photonic crystal fiber

Ion-Doped Photonic Crystal Fiber Lasers

Design of all-normal dispersion with Ge11.5As24Se64.5/Ge20Sb15Se65 chalcogenide PCF pumped at 1300 nm for supercontinuum generation

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High power broadband mid-infrared supercontinuum fiber laser using a novel chalcogenide AsSe2 photonic crystal fiber

Cited by 37 publications

References 22 publications

Mid-IR supercontinuum generation in dispersion flattened As38Se62 chalcogenide photonic crystal fiber

Mid-IR supercontinuum generation in dispersion flattened As38Se62 chalcogenide photonic crystal fiber

Ion-Doped Photonic Crystal Fiber Lasers

Design of all-normal dispersion with Ge11.5As24Se64.5/Ge20Sb15Se65 chalcogenide PCF pumped at 1300 nm for supercontinuum generation

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Product

Resources

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Mid-IR supercontinuum generation in dispersion flattened As₃₈Se₆₂ chalcogenide photonic crystal fiber

Mid-IR supercontinuum generation in dispersion flattened As₃₈Se₆₂ chalcogenide photonic crystal fiber