Ultra-flat supercontinuum generated from high-power, picosecond telecommunication fiber laser source

Liao, Ruoyu; Song, Yuming; Zhou, X. K.; Chai, Lu; Wang, Chingyue; Hu, Minglie

doi:10.1364/ao.55.009384

Cited by 6 publications

(4 citation statements)

References 21 publications

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“…Lasers exhibit exceptional characteristics, including tunable color, narrow line width, high intensity, and long coherence length, that have been applied to revolutionize processes in fields such as material processing, medicine, biology, and telecommunications. − In those applications, inorganic compounds, including semiconductors and doped crystals, have generally been used as gain media. , In addition, the resonators have consisted of sensitive optomechanical parts or special reflectors made of metals, dielectrics, or plastics. The gain and cavity materials are usually inelastic, unbendable, and manufactured in processes that often require toxic precursors in vacuum environments at high temperatures. ,− …”

Section: Introductionmentioning

confidence: 99%

Biomaterial Disk Lasers by Suppressing the Coffee Ring Effect

Dogru

Melikov

Nizamoğlu

2018

ACS Biomater. Sci. Eng.

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Inspired by the suppression of the coffee ring effect, we developed self-assembled disk lasers that can be formed with a wide variety of biomaterials. For proof of concept, we formed the disks with the natural protein silk fibroin or the synthetic biopolymer polyvinylpyrrolidone, which created a whispering gallery mode resonator that we combined with organic dyes for laser light generation. The lasers were flexible enough to bend around surfaces, physically transient in aqueous environments, and could be directly placed on various substrates. Moreover, the characteristics of laser emission could be modified by altering the size of the disk. Our results therefore highlight a new combination of materials that can be used in the environmentally friendly production of waste-free photonic devices.

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Section: Introductionmentioning

confidence: 99%

Biomaterial Disk Lasers by Suppressing the Coffee Ring Effect

Dogru

Melikov

Nizamoğlu

2018

ACS Biomater. Sci. Eng.

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“…By using ideal pedestal-free Raman shifted solitons in a highly nonlinear fiber (HNLF), they reported a high degree of flatness of 1 dB for a 520 nm SC bandwidth in the range from 1370 to 1890 nm [23]. Since then, many SC schemes with ultra-flat characteristics have been reported based on pedestal-free pump pulses in the normal and anomalous dispersion regimes [24][25][26][27][28]. Recently, mode-locked fiber laser (MLFLs) generating the so-called noise-like pulses (NLPs) have been proposed as the pump sources to realize spectral broadening in different kinds of optical fibers [29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

“…By using ideal pedestal-free Raman shifted solitons in a highly nonlinear fiber (HNLF), they reported a high degree of flatness of ~1 dB for a 520 nm SC bandwidth in the range from 1370 to 1890 nm [23]. Since then, many SC schemes with ultraflat characteristics have been reported based on pedestal-free pump pulses in the normal and anomalous dispersion regimes [24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Flat supercontinuum generation pumped by amplified noise-like pulses from a figure-eight erbium-doped fiber laser

et al. 2017

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The conditions to obtain noise-like pulses (NLPs) from a figure-eight fiber laser (F8L) and their application for supercontinuum (SC) generation in the anomalous dispersion regime are reported. The F8L is designed to remove the undesired low-intensity background radiation from pulse emission, generating NLPs with a 3-dB spectral bandwidth of 17.43 nm at the fundamental repetition frequency of 0.8 MHz. After amplification, NLPs reach a maximum average power of 9.2 mW and 123.32 nm spectral bandwidth. By controlling the amplifier pump power, flat SC generation is demonstrated through both a 800-m long spool of SMF-28 fiber and a piece of 5-m long highly nonlinear optical fiber. The results demonstrate a satisfactory flatness of 3-dB over a bandwidth of 1000 nm in the range from 1261 to 2261 nm, achieving to the best of our knowledge, one of the flattest SC generated from noise-like pulses.

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“…Liao et al demonstrated the generation of SC with high atness and no ne structure by using pedestal less picosecond pump pulses with kW, MW or even higher peak power. They obtained SC with high atness in the range of 1600-2180 nm by launching pedestal less picosecond pulses with a central wavelength of 1564 nm into highly nonlinear photonic crystal bers (HNLF-PCF) under the condition of all normal dispersion (ANDi) [14]. However, since picosecond or longer width pulses will cause nonlinear ampli cation of noise signals in nonlinear bers [15,16], unstable ne structures will exist in the spectrum, which can be signi cantly improved by using femtosecond pulses with low soliton orders as pump sources.…”

Section: Introductionmentioning

confidence: 99%

Highly coherent flat supercontinuum generation in highly nonlinear silica fiber pumped by 1.5μm femtosecond fiber laser

Xu,

Wang,

Yao

et al. 2023

Preprint

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Supercontinuum light sources with both highly flatness and highly coherence have unique application advantages in biological imaging, optical frequency comb, and optical coherence tomography. We demonstrate the generation of a highly coherent flat supercontinuum spectrum. In order to achieve broadband flat spectrum generation, we used a highly nonlinear fiber with a nominal dispersion of zero at 1550 nm and a dispersion slope of less than 0.025 ps/(nm2·km). Meanwhile a sub 100 fs fiber laser was used as the pump source in the experiment to achieve good coherence. When the pump power was 134 mW, the supercontinuum emission was characterized between 1197 nm and 2242 nm, showing the flat spectrum with 10 dB uniformity was obtained at the wavelength region of 1603–2242 nm and wide spectrum with a conversion efficiency over 85%. The coherence of the supercontinuum spectrum was 1 in the range of 1200–2242 nm by theoretically studying the coherence characteristics of the supercontinuum spectrum. In addition, the effect of pump laser duration on spectral flatness was demonstrated through experiments. Our experiment provides a feasible method for the generation of near-infrared flat highly coherence supercontinuum spectrum with all optical fibers structure.

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Ultra-flat supercontinuum generated from high-power, picosecond telecommunication fiber laser source

Cited by 6 publications

References 21 publications

Biomaterial Disk Lasers by Suppressing the Coffee Ring Effect

Biomaterial Disk Lasers by Suppressing the Coffee Ring Effect

Flat supercontinuum generation pumped by amplified noise-like pulses from a figure-eight erbium-doped fiber laser

Highly coherent flat supercontinuum generation in highly nonlinear silica fiber pumped by 1.5μm femtosecond fiber laser

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