Watt-level passively mode-locked Er^3+-doped ZBLAN fiber laser at 28  μm

Tang, Pinghua; Qin, Zhipeng; Liu, Jun; Zhao, Chujun; Xie, Guoqiang; Wen, Shuangchun; Qian, Liejia

doi:10.1364/ol.40.004855

Cited by 83 publications

(34 citation statements)

References 25 publications

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“…The simple adjustment of the mid-infrared optical switch is expected to greatly facilitate more thorough studies of pulsation regimes of various mid-infrared lasers. It should be noted that, although the technical characteristics of the demonstrated mode-locked laser are similar to those enabled by SESAMs or low-dimensional materials (such as graphene and black phosphorus)5657585960, Cd 3 As 2 possesses advantages in terms of scaling to longer mid-infrared wavelength as well as flexibility in customizing the relaxation time.…”

Section: Resultsmentioning

confidence: 99%

A robust and tuneable mid-infrared optical switch enabled by bulk Dirac fermions

Zhu¹,

Wang²,

Meng³

et al. 2017

Nat Commun

183

115

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Pulsed lasers operating in the mid-infrared (3–20 μm) are important for a wide range of applications in sensing, spectroscopy, imaging and communications. Despite recent advances with mid-infrared gain platforms, the lack of a capable pulse generation mechanism remains a significant technological challenge. Here we show that bulk Dirac fermions in molecular beam epitaxy grown crystalline Cd3As2, a three-dimensional topological Dirac semimetal, constitutes an exceptional ultrafast optical switching mechanism for the mid-infrared. Significantly, we show robust and effective tuning of the scattering channels of Dirac fermions via an element doping approach, where photocarrier relaxation times are found flexibly controlled over an order of magnitude (from 8 ps to 800 fs at 4.5 μm). Our findings reveal the strong impact of Cr doping on ultrafast optical properties in Cd3As2 and open up the long sought parameter space crucial for the development of compact and high-performance mid-infrared ultrafast sources.

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Section: Resultsmentioning

confidence: 99%

A robust and tuneable mid-infrared optical switch enabled by bulk Dirac fermions

Zhu¹,

Wang²,

Meng³

et al. 2017

Nat Commun

183

115

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“…Compared to gain-switched and Q-switched lasers, mode-locked lasers offer much higher peak powers and shorter pulse durations in the ps-or fs-level that are in great demand for a wide variety of applications such as mid-IR nonlinear wavelength conversion and medical surgery, where high-energy/peak power is essential, and shorter pulses are preferred. So far, many mode-locked fiber lasers operating at ~3 μm have been reported, mainly based on nonlinear polarization evolution (NPE) technology [32,33] or saturable absorbers such as semiconductor saturable absorber mirror (SESAM) [34][35][36][37], Fe 2+ : ZnSe [38], and two-dimensional materials [39][40][41]. Femtosecond fluoride fiber lasers operating at ~3 µm based on nonlinear polarization evolution (NPE) with an average power of 44 mW and 206 mW were demonstrated [32,33].…”

Section: Introductionmentioning

confidence: 99%

34 nm-wavelength-tunable picosecond Ho^3+/Pr^3+-codoped ZBLAN fiber laser

Chen¹,

He²,

Luo³

et al. 2017

Opt. Express

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We propose and demonstrate a broadly wavelength-tunable mode-locked Ho/Pr-codoped ZBLAN fiber laser operating in the 3 μm mid-infrared spectral region based on a semiconductor saturable absorber mirror. Wavelength selection is realized by rotating a plane ruled grating. The fiber laser exhibits stable continuous-wave mode-locking operation over a wide wavelength tuning range of 34 nm (2842.2 nm~2876.2 nm), with a 10.17 MHz repetition rate and 22 ps pulse duration. Stable mode-locked pulses can be maintained until the launched pump power of 1.25 W. Maximum average output power of 127.7 mW and the corresponding pulse energy of 12.56 nJ are achieved. To the best of our knowledge, this is the first demonstration of a wavelength-tunable mode-locked fiber laser operating in the 3 μm spectral region. Such simple, robust, and versatile mid-infrared picosecond laser source can find various applications in laser surgery, spectroscopy, and nonlinear frequency conversion.

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“…Fortunately, mid-IR gain fibers that constitute the main element in a mid-IR fiber laser have been developed in recent years. Typical mid-IR gain fibers, such as rare-earth-ion doped fluoride and chalcogenide-based fibers with good mid-IR transparency and high lasing efficiency, can be fabricated [4][5] and utilized in the high-power fiber lasers at around ~3 μm [6][7][8][9][10][11][12].…”

mentioning

confidence: 99%

Widely Wavelength-Tunable Mid-Infrared Fluoride Fiber Lasers

Liu

Huang

et al. 2018

IEEE J. Select. Topics Quantum Electron.

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Abstract-We demonstrate widely wavelength-tunable continuous-wave (CW) and Q-switched Er 3+ -doped ZBLAN fluoride fiber lasers operating around 3 μm enabled by a volume Bragg grating (VBG). In the CW operation regime, a total wavelength tuning range of over 160 nm spanning from 2694 nm to 2854 nm has been achieved. For the Q-switched mode of operation, a slightly modified resonator configuration, incorporating a passive Q-switcher, topological insulator Bi2Te3 nanosheets, can produce stable pulse trains with a pulse width of 880 ns at a repetition rate of 81 kHz, while maintaining a wavelength tuning range of 62 nm from 2762 nm to 2824 nm through adjusting the VBG. In both operation regimes, the output spectral width is measured to be <0.3 nm (FWHM) over the whole tuning range. Our work both demonstrates the great wavelength-tuning potential of the Er 3+ -doped fluoride fiber laser, and also paves a way for the development of a range of high performance mid-infrared laser sources.Index Terms-Mid-infrared, wavelength tunable, Q-switched, topological insulator, fiber lasers.

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Watt-level passively mode-locked Er^3+-doped ZBLAN fiber laser at 28 μm

Cited by 83 publications

References 25 publications

A robust and tuneable mid-infrared optical switch enabled by bulk Dirac fermions

A robust and tuneable mid-infrared optical switch enabled by bulk Dirac fermions

34 nm-wavelength-tunable picosecond Ho^3+/Pr^3+-codoped ZBLAN fiber laser

Widely Wavelength-Tunable Mid-Infrared Fluoride Fiber Lasers

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