Q-switched and mode-locked thulium-doped fiber laser with pure Antimony film Saturable absorber

Rahman, Mohd Fauzi Ab; Latiff, Anas Abdul; Zaidi, Umi Zalilah Mohamad; Rusdi, Muhammad Farid Mohd; Rosol, Ahmad Haziq Aiman; Bushroa, A.R.; Dimyati, Kaharudin; Harun, Sulaiman Wadi

doi:10.1016/j.optcom.2018.03.073

Cited by 37 publications

(8 citation statements)

References 28 publications

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“…[92] Rahman et al reported Q-switched and mode-locked lasers by using antimony-based SAs at a 2 µm wavelength which could produce the shortest pulse width of about 4.9 µs and 64 ps, respectively. [73] Furthermore, antimonene-based SAs are rarely explored, and the incorporation of an antimonene SA is only reported for the 1.5 µm wavelength region. [74,75] Although Yuan et al have reported a Q-switched laser using an antimonene SA, the laser operated at the shorter wavelength of 1558 nm.…”

Section: Resultsmentioning

confidence: 99%

“…Our work reports a shorter pulse width of 1.3 ps by using an antimonene SA in the 2 µm wavelength region compared with a 64 ps pulse mode-locked laser achieved with an antimony SA. [73] -60…”

Section: Resultsmentioning

confidence: 99%

“…[66] The nonlinear optical behavior of antimonene and its significant optical Kerr nonlinearity pave the way for its potential applications as an optical switcher or beam shaper. [70] Although antimony has been explored as a SA at different wavelength regimes of 1 µm, 1.5 µm and 2 µm, [71][72][73] antimonene is rarely investigated as a SA for passive generation of Q-switched and mode-locked lasers. Currently, antimonene has only been reported as a Q-switcher at the C-band wavelength region by integrating it into an EDFL.…”

Section: Introductionmentioning

confidence: 99%

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Antimonene-based saturable absorber for a soliton mode-locked and Q-switched fiber laser in the 2 μm wavelength region

et al. 2023

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In this work, we have demonstrated antimonene as a saturable absorber to generate ultrafast mode-locked and Q-switched laser at a 2-micron wavelength region. The two antimonene-based SAs were prepared and inserted separately in a thulium-holmium doped fiber laser (THDFL) to produce the pulsed lasers. Antimonene was coated onto the tapered fiber to generate soliton mode-locked pulses and in thin-film form for the generation of Q-switched pulses. The modelocking was stable within the pump power of 267 to 511 mW, and the laser operated at the center wavelength of 1897.4 nm. The mode-locked laser had a pulse width of 1.3 ps and a repetition rate of 12.6 MHz, with a signal-to-noise ratio (SNR) of 64 dB. The Q-switched laser operation was stable at the wavelength of 1890.1 nm within the pump power of 312 to 381 mW. With the increase in pump power from 312 mW to 381 mW, the repetition rate increased to a maximum of 56.63 kHz and the pulse width decreased to a minimum value of 2.85 μs. A wide range tunability of Q-switched laser was also realized within the wavelength of 1882 to 1936 nm.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Antimonene-based saturable absorber for a soliton mode-locked and Q-switched fiber laser in the 2 μm wavelength region

et al. 2023

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“…The Q switched pulse energy demonstrated here is ~20 dB higher and the slope e ciency is ~ 40% as compared to 1% in the previous demonstration [29]. More importantly, the slope e ciency is higher, and the pulse energy is comparable or in many cases higher than many benchtop Q-switched all-ber lasers using true saturable absorbers [47][48][49][50][51][52][53][54][55]. Moreover, pulses with high peak power and short pulsewidth can be achieved (by thermally tuning the saturable absorber), provided that we operate within the optical damage threshold of the SiN waveguide as one can reach intracavity pulse energy close to the damage threshold of SiN waveguides with nanosecond pulses [56-58].…”

Section: Introductionmentioning

confidence: 81%

“…Passive Q-switching on the other hand, requires a saturable absorber whose loss drops with pulse intensity, which is a cost effective, compact and robust technique. For this reason, there is a strong desire in the ber community to develop passively Q-switched high energy lasers, and several groups have tried different types of saturable absorbers over the past decade that are durable, inexpensive, have a high damage threshold, and require little space [47][48][49][50][51][52][53][54][55][59][60][61][62][63].…”

Section: Introductionmentioning

confidence: 99%

Chip-scale, CMOS-compatible, high energy passively Q-switched laser

Singh

Lorenzen

Sinobad

et al. 2023

Preprint

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Chip-scale, high-energy optical pulse generation is becoming increasingly important as we expand activities into hard to reach areas such as space and deep ocean. Q-switching of the laser cavity is the best known technique for generating high-energy pulses, and typically such systems are in the realm of large bench-top solid-state lasers and fiber lasers, especially in the long wavelength range >1.8 µm, thanks to their large energy storage capacity. However, in integrated photonics, the very property of tight mode confinement, that enables a small form factor, becomes an impediment to high energy application due to small optical mode cross-section. In this work, we demonstrate complementary metal-oxide-semiconductor (CMOS) compatible, rare-earth gain based large mode area (LMA) passively Q-switched laser in a compact footprint. We demonstrate high on-chip output pulse energy of >150 nJ in single transverse fundamental mode in the eye-safe window (1.9 µm), with a slope efficiency ~ 40% in a footprint of ~9 mm2. The high energy pulse generation demonstrated in this work is comparable or in many cases exceeds Q-switched fiber lasers. This bodes well for field applications in medicine and space.

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Generation of bright‐dark Q‐switched pulse pair in thulium‐doped fiber laser cavity with titanium aluminum carbide absorber

Omar

Musa

Rosol

et al. 2023

Micro & Optical Tech Letters

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The proposed titanium aluminum carbide (Ti3AlC2) film‐based saturable absorber (SA) for Q‐switching in thulium‐doped fiber laser (TDFL) cavity offers a cost‐effective and practical alternative to conventional SA materials such as graphene or semiconductor. The Ti3AlC2 film was produced using a simple and low‐cost casting approach with polyvinyl alcohol as a binder. The SA was devised from the film using a sandwich‐structured fiber‐ferrule platform and integrated into a TDFL ring cavity. The generated Q‐switched pulses were stable and had a repetition rate of up to 20.82 kHz with a minimum pulse width of 3.167 µs and a maximum pulse energy of 58.12 nJ. The Q‐switched laser produced the bright‐dark pulse pair. These results demonstrate the potential of Ti3AlC2 as a promising SA material for practical applications in the field of fiber lasers.

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Q-switched and mode-locked thulium-doped fiber laser with pure Antimony film Saturable absorber

Cited by 37 publications

References 28 publications

Antimonene-based saturable absorber for a soliton mode-locked and Q-switched fiber laser in the 2 μm wavelength region

Antimonene-based saturable absorber for a soliton mode-locked and Q-switched fiber laser in the 2 μm wavelength region

Chip-scale, CMOS-compatible, high energy passively Q-switched laser

Generation of bright‐dark Q‐switched pulse pair in thulium‐doped fiber laser cavity with titanium aluminum carbide absorber

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