Review: Dark pulse generation in fiber laser system

Tiu, Zian Cheak; Harun, Sulaiman Wadi; Ahmad, Harith; Samion, Muhamad Zharif; Tan, Sin Jin

doi:10.1016/j.optlastec.2022.108056

Cited by 15 publications

(9 citation statements)

References 98 publications

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“…Mechanism of dark pulse generation in a laser with a wavelength greater than 1310 nm, particularly in an erbium-doped fiber laser (with anomalous dispersion operation), is slightly different than the one with a wavelength lower than 1310 nm, which is in a normal dispersion operation. For dark pulse generation in an EDF laser, a dispersion compensating fiber or dispersion shifting fiber is necessary to alter its dispersion from anomalous to normal regime [38]. However, this is not the case in our work, the following derivation explains the reason behind this phenomenon.…”

Section: Nanosecond Dark Pulse Generationmentioning

confidence: 88%

Molybdenum gallium carbide coated D-shape fiber for nanosecond dark pulse generation in erbium-doped fiber laser

Rosol,

Jafry,

Ooi

et al. 2024

Phys. Scr.

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Molybdenum gallium carbide (Mo2Ga2C), a material belongs to MAX phase group, has garnered significant interest in a wide range of scientific field, including material science, engineering, and laser physics. It is chemically and structurally promising since it exhibits a low shear modulus, superconducting behaviour, and high mechanical stability. Here, we prepared a saturable absorber (SA) based on Mo2Ga2C coated D-shape fiber using solution casting technique. It exhibits outstanding saturable absorption of 7.2%, allowing it to generate dark pulse laser in an erbium-doped fiber laser cavity. We analyzed the laser's performance and obtained a dark pulse with a pulse energy, peak power, and average output power of 3.9 nJ, 27.5 mW, and 7.3 mW, respectively. This foundational work may introduce a new material as an alternative SA device in fiber laser cavity.

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Section: Nanosecond Dark Pulse Generationmentioning

confidence: 88%

Molybdenum gallium carbide coated D-shape fiber for nanosecond dark pulse generation in erbium-doped fiber laser

Rosol,

Jafry,

Ooi

et al. 2024

Phys. Scr.

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“…In addition to the conventional picosecond pulses, some interesting pulse patterns in fiber lasers have received increasing attention recently, such as femtosecond pulses 33 and dark solitons. 34 Although some disadvantages, e.g., the timing jitter and rapid phase variations, can affect the measurement accuracy of femtosecond pulses, the validity of the OCTOPUS methodology is still available for measuring any ultrashort pulses if these pulses can be converted to the corresponding FTLPs with identical spectra. Moreover, the OCTOPUS is still able to accurately reconstruct the pulse fields of dark solitons utilizing analytical solutions of chirp-free dark solitons provided by ref 34 as benchmarks.…”

Section: ■ Experimental Setup and Methodsmentioning

confidence: 99%

Optical Chirplet Transform for Observing Pulse Ultrafast Structures

Sun,

Shu,

et al. 2024

ACS Photonics

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The accurate measurement of ultrafast pulses is extremely important in both academic and industrial fields. Revealing fast- and slow-varying pulse information simultaneously still remains a considerable challenge in ultrafast science. We propose a novel ultrafast measurement method, termed the “optical chirplet transform for observing pulse ultrafast structures (OCTOPUS)”, to measure the spectrotemporal transient information on pulses. This approach slices a measured pulse into a series of orthogonal chirplet bases and transforms it into the corresponding Fourier-transform-limited pulse (FTLP) through a phase editing process, in which a programmable waveshaper iteratively achieves the mirror image of the measured pulse’s phase spectrum relative to the theoretical FTLP. As a result, the ultrafast pulse field is accurately reconstructed assisted by phase spectrum retrieval. This method can both reconstruct transient fast-varying pulse fields with higher resolution and accuracy and measure other pulse information such as phase distribution and slow-varying envelope, advancing progress in ultrafast measurement technology.

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“…47 Three lasers of different wavelengths interact with each other, leading to topological defects in the time domain. 46 The Comb filtering effect, caused by the polarization-dependent loss attributed to the PCs and birefringence of the SMF, results in the appearance of triple wavelengths. 48 Both the bright pulse and bright−bright−dark pulse states in this fiber laser have good long-term stability when the pump power and PC state are kept constant.…”

Section: ■ Fabrication and Characterizationmentioning

confidence: 99%

In₂Ge₂Te₆ Nanosheets for Pulsed Fiber Laser

Wang,

Tang,

Sheng

et al. 2024

ACS Appl. Nano Mater.

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The various properties of In 2 Ge 2 Te 6 , a ternary layered chemical belonging to the hexagermanate family, have been little investigated so far. Herein, we experimentally investigated the structure and optical properties of In 2 Ge 2 Te 6 and its application in pulsed fiber laser. Few-layered In 2 Ge 2 Te 6 nanosheets with a thickness less than 8 nm have been successfully prepared by the liquid exfoliation method. In the C-band, In 2 Ge 2 Te 6 has a nonlinear saturable absorption property, and it varies with the polarization state. The modulation depths of In 2 Ge 2 Te 6 are 2.39 and 2.49% under two vertical polarization states of the laser, respectively. Saturable absorber fabricated with In 2 Ge 2 Te 6 can be applied to an Er-doped fiber laser. This laser can output stable bright pulses and bright− bright−dark pulses. This study suggests that In 2 Ge 2 Te 6 -based devices could be developed as efficient ultrafast photonics candidates. KEYWORDS: ternary layered chemical, In 2 Ge 2 Te 6 nanosheets, optical properties, pulsed fiber laser, bright−bright−dark pulses

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Review: Dark pulse generation in fiber laser system

Cited by 15 publications

References 98 publications

Molybdenum gallium carbide coated D-shape fiber for nanosecond dark pulse generation in erbium-doped fiber laser

Molybdenum gallium carbide coated D-shape fiber for nanosecond dark pulse generation in erbium-doped fiber laser

Optical Chirplet Transform for Observing Pulse Ultrafast Structures

In₂Ge₂Te₆ Nanosheets for Pulsed Fiber Laser

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Review: Dark pulse generation in fiber laser system

Cited by 15 publications

References 98 publications

Molybdenum gallium carbide coated D-shape fiber for nanosecond dark pulse generation in erbium-doped fiber laser

Molybdenum gallium carbide coated D-shape fiber for nanosecond dark pulse generation in erbium-doped fiber laser

Optical Chirplet Transform for Observing Pulse Ultrafast Structures

In2Ge2Te6 Nanosheets for Pulsed Fiber Laser

Contact Info

Product

Resources

About

In₂Ge₂Te₆ Nanosheets for Pulsed Fiber Laser