Wavelength tunable Q-switch laser in visible region with Pr3+-doped fluoride-glass fiber pumped by GaN diode laser

Kojou, Junichiro; Watanabe, Yojiro; Agrawal, P.; Kamimura, Toshihiro; Kannari, Fumihiko

doi:10.1016/j.optcom.2012.10.027

Cited by 22 publications

(4 citation statements)

References 17 publications

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“…ZBLAN fibre) and high-power blue GaN LDs in recent years, exciting progress in continuous-wave visible Pr 3+ -doped ZBLAN fibre lasers has been made, 7 but the pulsed operation of a visible fibre laser is very rare. 8 Although active Q-switching by an acousto-optic modulator has been recently reported in visible wavelengths, 8 it sacrifices the all-fibre structure and increases the system cost. In contrast, passive Q-switching or mode-locking could be preferred, and this is therefore stimulating research on new saturable-absorption materials for passively Q-switched/mode-locked visible fibre lasers.…”

Section: Introductionmentioning

confidence: 99%

Two-dimensional material-based saturable absorbers: towards compact visible-wavelength all-fiber pulsed lasers

et al. 2016

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Passive Q-switching or mode-locking by placing a saturable absorber inside the laser cavity is one of the most effective and popular techniques for pulse generation. However, most of the current saturable absorbers cannot work well in the visible spectral region, which seriously impedes the progress of passively Q-switched/mode-locked visible pulsed fibre lasers. Here, we report a kind of visible saturable absorber-two-dimensional transition-metal dichalcogenides (TMDs, e.g. WS2, MoS2, MoSe2), and successfully demonstrate compact red-light Q-switched praseodymium (Pr(3+))-doped all-fibre lasers. The passive Q-switching operation at 635 nm generates stable laser pulses with ∼200 ns pulse duration, 28.7 nJ pulse energy and repetition rate from 232 to 512 kHz. This achievement is attributed to the ultrafast saturable absorption of these layered TMDs in the visible region, as well as the compact and all-fibre laser-cavity design by coating a dielectric mirror on the fibre end facet. This work may open a new route for next-generation high-performance pulsed laser sources in the visible (even ultraviolet) range.

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Section: Introductionmentioning

confidence: 99%

Two-dimensional material-based saturable absorbers: towards compact visible-wavelength all-fiber pulsed lasers

et al. 2016

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“…AOM [3], Cr-doped crystal [4]) are higher than our laser, as a rising technology, the performance of 2D nanomaterials in visible region could be further improved, like the taper deposition method [19], which demonstrated a GO-based Q-switched laser with pulse energy as high as 6.71 μJ at 2032 nm. Moreover, the most important merit for this technique is to completely ensure the compactness, practicality and cost-effectiveness of the pulsed fiber laser.…”

Section: Resultsmentioning

confidence: 93%

“…The trivalent praseodymium (Pr 3+ ) ions have proven to be one of the best candidates for efficient visible fiber laser [1,2], and there are several techniques for inducing visible pulsed laser operation, such as acousto-optic modulator (AOM) [3] and Cr-doped crystal [4]. Though these solutions are the well-established technology, they would compromise the key benefit of compactness for fiber lasers.…”

Section: Introductionmentioning

confidence: 99%

Passively <inline-formula> <tex-math notation="LaTeX">$Q$ </tex-math> </inline-formula>-Switched Red Pr³⁺-Doped Fiber Laser With Graphene-Oxide Saturable Absorber

Zhong

Caï

et al. 2016

IEEE Photon. Technol. Lett.

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In this paper, a compact Q-switched red (635.7nm) praseodymium (Pr 3+ )-doped fluorozirconate fiber laser using graphene-oxide (GO) as a saturable absorber (SA) is demonstrated experimentally. Furthermore, a silica fiber end coated with a dielectric film was employed to construct the compact resonator. The laser possesses a wide range of pulse repetition rate from 64.1 to 195.3 kHz and the minimum pulse duration of 554 ns. This is the first reported passively Q-switched laser, to the best of our knowledge, at visible region with a GO saturable absorber. The experimental results show that GO can be a promising SA for visible pulsed lasers.Index Terms-Visible laser, Q-switched fiber laser, graphene oxide, Pr-doped fiber laser.

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“…The most challenging part of achieving this goal is the implementation of light sources and modulation devices [4]. For the latter, compared to active mode-locked lasers [9][10][11], passive pulsed lasers based on saturable absorbers (SAs) have advantages in terms of low complexity, low cost, and reliable performance, so further refinement of their related research is important for the development of visible-wavelength pulsed lasers.…”

Section: Introductionmentioning

confidence: 99%

2D Saturable Absorbers for Potential Pulse Generation in the Visible-Wavelength Band

et al. 2023

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Implementing compact, efficient, and reliable passive pulsed lasers at visible wavelengths is attractive. This paper systematically investigated the thickness-dependent optical absorption characteristics of two-dimensional materials, including graphene, transition-metal dichalcogenides, and dye films at the 532 nm wavelength band, and revealed the effects of thickness on different optical absorption parameters. The results suggested that dye films are more suitable for loss-sensitive pulsed lasers and graphene is more suitable for modulation depth-sensitive pulsed lasers, while transition-metal dichalcogenide samples have intermediate performance. It can provide guidance for the rational selection of saturable absorbers in pulsed all-fiber lasers to optimize the optical pulse performance in the visible-wavelength band.

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Wavelength tunable Q-switch laser in visible region with Pr3+-doped fluoride-glass fiber pumped by GaN diode laser

Cited by 22 publications

References 17 publications

Two-dimensional material-based saturable absorbers: towards compact visible-wavelength all-fiber pulsed lasers

Two-dimensional material-based saturable absorbers: towards compact visible-wavelength all-fiber pulsed lasers

Passively <inline-formula> <tex-math notation="LaTeX">$Q$ </tex-math> </inline-formula>-Switched Red Pr³⁺-Doped Fiber Laser With Graphene-Oxide Saturable Absorber

2D Saturable Absorbers for Potential Pulse Generation in the Visible-Wavelength Band

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Wavelength tunable Q-switch laser in visible region with Pr3+-doped fluoride-glass fiber pumped by GaN diode laser

Cited by 22 publications

References 17 publications

Two-dimensional material-based saturable absorbers: towards compact visible-wavelength all-fiber pulsed lasers

Two-dimensional material-based saturable absorbers: towards compact visible-wavelength all-fiber pulsed lasers

Passively <inline-formula> <tex-math notation="LaTeX">$Q$ </tex-math> </inline-formula>-Switched Red Pr3+-Doped Fiber Laser With Graphene-Oxide Saturable Absorber

2D Saturable Absorbers for Potential Pulse Generation in the Visible-Wavelength Band

Contact Info

Product

Resources

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Passively <inline-formula> <tex-math notation="LaTeX">$Q$ </tex-math> </inline-formula>-Switched Red Pr³⁺-Doped Fiber Laser With Graphene-Oxide Saturable Absorber