2.8  µm passively Q-switched Er:ZBLAN fiber laser with an Sb saturable absorber mirror

Wang, Jintao; Wei, Jincheng; Liu, Wenjun; Yan, Peiguang; Guo, Chunyu; Ye, Chuanxiang; Xia, Lin; Ruan, Shuangchen

doi:10.1364/ao.402227

Cited by 14 publications

(3 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To date, graphene-based SAs have been employed in midinfrared pulsed lasers to generate ultrashort pulses [28][29][30][31][32]. However, graphene SAs are always prepared by the following routes: embedment in a polyvinyl alcohol film [33], liquid phase exfoliation (LPE) [34][35][36], pulsed laser deposition [37,38], solution-deposition on mirrors or calcium fluoride (CaF 2 ) substrate [39], and metal catalyzed chemical vapor deposition (CVD) and transfer [19]. However, these methods could introduce impurities or molecular functional groups which affect the quality of graphene film and cause the optical loss in the mid-infrared.…”

Section: Introductionmentioning

confidence: 99%

PECVD-derived graphene saturable absorber mirror for 2.8 μm pulsed Er:ZBLAN fiber laser

Jin¹,

Chang²,

Li³

et al. 2022

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

Graphene has been emerging as an ideal mid-infrared saturable absorber (SA) due to its broadband absorption, ultrafast nonlinear optical response, high stability and thermal tolerance. However, the current routes (e. g. chemical vapour deposition and spin coating) for constructing graphene SAs is suffering from the limited flexibility in substrate choice and the introduction of impurities during transfer process, resulting in poor film quality and unstable laser modulation. Here, we demonstrate a high-quality graphene saturable absorber mirror (GSAM) grown directly on calcium fluoride (CaF2) substrate by a low-temperature plasma enhanced chemical vapor deposition (PECVD) method for mid-infrared pulse modulation. The controllable growth of high-quality graphene film on the nickel-modified CaF2 substrate is realized by adjusting the growth time and hydrocarbon ratio during PECVD process. Consequently, the GSAM shows excellent nonlinear optical absorption with the modulation depth of 11.2 %. By inserting the GSAM into a Er:ZBLAN fiber laser, a stable passive Q-switched (QS) operation can be achieved with an average output power of 142 mW and a pulse width of 300.2 ns. The slope efficiency of QS laser is up to 17.4 % and the peak power is 7.76 W. Our strategy paves the way for developing high quality and modulation stability GSAM towards industrial applications of pulsed mid-infrared lasers.

show abstract

Section: Introductionmentioning

confidence: 99%

PECVD-derived graphene saturable absorber mirror for 2.8 μm pulsed Er:ZBLAN fiber laser

Jin¹,

Chang²,

Li³

et al. 2022

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

show abstract

“…To achieve pulsed operation, gain-switching and Q-switching of Er:ZBLAN fiber laser are investigated [8][9][10][11][12][13]. Whereas, the duration of output pulse is very sensitive to pump parameters, which makes it pretty difficult to precisely control or widely tune the output duration in those two pulsed methods [14,15]. In our previous work, we numerically proposed a bias-pump technique to keep the temporal shape of output pulse stable well in Ybdoped fiber laser [16,17].…”

Section: Introductionmentioning

confidence: 99%

Duration-controllable mid-infrared pulse from bias-pumped Er:ZBLAN fiber laser

Wang¹,

Qin²,

Luo³

et al. 2021

Laser Phys.

View full text Add to dashboard Cite

We experimentally demonstrate the generation of duration-controllable pulses at 2.8 µm based on bias-pump technique for the first time. Bias-pumped by a 976 nm continuous-wave (CW)-pulsed combined laser, duration-controllable pulses are produced from an Er:ZBLAN fiber laser and the duration is entirely determined by the duration of pump pulse. Numerical simulations agree with experimental results well, and further predict that the temporal profile of output pulse from bias-pumped Er:ZBLAN fiber laser can also be identical with that of pump pulse under certain conditions. The pump-controlled mid-infrared pulse may have more applications in various areas due to its manageable temporal characteristics.

show abstract

“…Antimonene, a group-VA elemental layered material similar to black phosphorus with a hexagonal lattice has been widely noticed recently. − Interestingly, the band structure of antimony experiences a transition from semiconductor to topological semimetal depending on the antimonene thickness (Figure ). In general, monolayer antimonene is a semiconductor with an indirect bandgap; however, it becomes a topological semimetal for multiple layers because of the existing topological surface states and the strong interlayer coupling effect. , In the band structure of multilayer antimonene, the Weyl node just locates at the Fermi surface, forming a Fermi point.…”

mentioning

confidence: 99%

Pushing Optical Switch into Deep Mid-Infrared Region: Band Theory, Characterization, and Performance of Topological Semimetal Antimonene

Hai

Xie

et al. 2021

ACS Nano

View full text Add to dashboard Cite

The existing pulsed laser technologies and devices are mainly in the infrared spectral region below 3 μm so far. However, longer-wavelength pulsed lasers operating in the deep mid-infrared region (3–20 μm) are desirable for atmosphere spectroscopy, remote sensing, laser lidar, and free-space optical communications. Currently, the lack of reliable optical switches is the main limitation for developing pulsed lasers in the deep mid-infrared region. Here, we demonstrate that topological semimetal antimonene possesses an ultrabroadband optical switch characteristic covering from 2 μm to beyond 10 μm. Especially, the topological semimetal antimonene shows a very low saturable energy fluence (only 3–15 nJ cm–2 beyond 3 μm) and an ultrafast recovery time of ps level. We also demonstrate stable Q-switching in fiber lasers at 2 and 3.5 μm by using topological semimetal antimonene as passive optical switches. Combined with the high environmental stability and easy fabrication, topological semimetal antimonene offers a promising optical switch that extends pulsed lasers into deep mid-infrared region.

show abstract

2.8 µm passively Q-switched Er:ZBLAN fiber laser with an Sb saturable absorber mirror

Cited by 14 publications

References 41 publications

PECVD-derived graphene saturable absorber mirror for 2.8 μm pulsed Er:ZBLAN fiber laser

PECVD-derived graphene saturable absorber mirror for 2.8 μm pulsed Er:ZBLAN fiber laser

Duration-controllable mid-infrared pulse from bias-pumped Er:ZBLAN fiber laser

Pushing Optical Switch into Deep Mid-Infrared Region: Band Theory, Characterization, and Performance of Topological Semimetal Antimonene

Contact Info

Product

Resources

About