Octave spanning coherent supercontinuum generation using 51 fs high-power ultrashort pulse from Er-doped similariton amplifier

Nozaki, Yuto; Nomura, Yoshinobu; Aramaki, Mitsutoshi; Nishizawa, Norihiko

doi:10.7567/jjap.53.020301

Cited by 13 publications

(9 citation statements)

References 13 publications

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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%

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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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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“…24,25) We developed a highquality similariton amplifier based on the EDF system. 26) A parabolic-shaped, high power, almost ideal similariton pulse was generated in EDF. After the dispersion compensation, a 4.4 nJ, 51 fs, almost pedestal-free, high-power, ultrashort pulse was generated.…”

Section: Ultrashort Pulse Fiber Amplificationmentioning

confidence: 99%

Ultrashort pulse fiber lasers and their applications

Nishizawa

2014

Jpn. J. Appl. Phys.

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Fiber lasers, which consist of ideal waveguides of optical fibers, work as stable, practical, and maintenance-free lasers. A passively mode-locked ultrashort pulse fiber laser using the intensity-dependent absorption element has made great progress using a new type of saturable absorber with a nanocarbon material. The techniques of ultrashort pulse amplification and pulse compression were also developed. Using a combination of specialty fibers, ultrawideband pulse sources, such as wavelength tunable ultrashort pulses and supercontinuum, can be demonstrated. These new light sources are useful for laser applications, especially for optical metrology. In this paper, the progress of highly functional ultrashort pulse fiber laser sources and their applications are reviewed mainly on the basis of the works of this author.

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“…Moreover, the single-mode fiber was used as an intermediate stage to convert laser pulse into Raman soliton centered at 1.67 μm, which was filtered with a low pass filter and used as the pump for SC generation process. The octave spanning supercontinuum was generated by Nozaki 18 in a dispersion shifted fiber (the spectrum from 0.95 μm to 2.30 μm and in a normal dispersion fiber (the spectrum from 1.05 μm to 2.15 μm). However, the presented system is not all-fiber again.…”

Section: Introductionmentioning

confidence: 99%

Compact all-fiber source of coherent linearly polarized octave-spanning supercontinuum based on normal dispersion silica fiber

Tarnowski

Martynkien

Mergo

et al. 2019

Sci Rep

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We report the generation of coherent octave-spanning supercontinuum in an all-fiber system, without any free-space optical components. The setup uses the femtosecond fiber laser as a pump and an all-normal dispersion microstructured fiber as a medium for supercontinuum generation. The generated spectrum is characterized both experimentally and numerically and shows a broad bandwidth (1.1−2.2 μm), a high signal to noise ratio reaching 100 at maximum, a high coherence (closing to 1), linear polarization and average output power up to 57 mW. The source is characterized by exceptional simplicity and does not require any alignment (the nonlinear fiber is spliced to the pump) which finally opens the path to outside-lab applications of supercontinuum radiation.

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Octave spanning coherent supercontinuum generation using 51 fs high-power ultrashort pulse from Er-doped similariton amplifier

Cited by 13 publications

References 13 publications

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

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

Ultrashort pulse fiber lasers and their applications

Compact all-fiber source of coherent linearly polarized octave-spanning supercontinuum based on normal dispersion silica fiber

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