Core-pumped femtosecond Nd:fiber laser at 910 and 935  nm

Gao, Xiang; Zong, Weijian; Chen, Bingying; Zhang, Jian; Li, Chen; Liu, Yizhou; Wang, Aimin; Song, Yanrong; Zhang, Zhigang

doi:10.1364/ol.39.004404

Cited by 31 publications

(16 citation statements)

References 15 publications

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“…Its core numerical aperture (NA, ~0.14) has been designed to match with the standard single-mode fiber (SMF), e.g., the Nufern 1060-xp and Corning HI 1060. Typically, NDF exhibits a strong emission at around 1060 nm, and thus the NDF cavity easily oscillates at 1060 nm rather than 900 nm [16,17]. The NDF used here has a W-type refractive index profile, and more detailed information can be found iXblue.…”

Section: The Swept Source At 932 Nm (Ss@932nm)mentioning

confidence: 99%

Ultrafast time-stretch imaging at 932 nm through a new highly-dispersive fiber

Wei

Kong

et al. 2016

Biomed. Opt. Express

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Abstract:Optical glass fiber has played a key role in the development of modern optical communication and attracted the biotechnology researcher's great attention because of its properties, such as the wide bandwidth, low attenuation and superior flexibility. For ultrafast optical imaging, particularly, it has been utilized to perform MHz time-stretch imaging with diffraction-limited resolutions, which is also known as serial time-encoded amplified microscopy (STEAM). Unfortunately, time-stretch imaging with dispersive fibers has so far mostly been demonstrated at the optical communication window of 1.5 μm due to lack of efficient dispersive optical fibers operating at the shorter wavelengths, particularly at the biofavorable window, i.e., <1.0 μm. Through fiber-optic engineering, here we demonstrate a 7.6-MHz dual-color time-stretch optical imaging at bio-favorable wavelengths of 932 nm and 466 nm. The sensitivity at such a high speed is experimentally identified in a slow data-streaming manner. To the best of our knowledge, this is the first time that all-optical time-stretch imaging at ultrahigh speed, high sensitivity and high chirping rate (>1 ns/nm) has been demonstrated at a bio-favorable wavelength window through fiber-optic engineering.

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Section: The Swept Source At 932 Nm (Ss@932nm)mentioning

confidence: 99%

Ultrafast time-stretch imaging at 932 nm through a new highly-dispersive fiber

Wei

Kong

et al. 2016

Biomed. Opt. Express

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“…Recently, few techniques were utilized to generate ultrashort pulses below 1 μm: femtosecond Yb-doped fiber laser amplification with optical parametric oscillator [16], [17], nonlinear frequency shift in a high-nonlinearity fiber [18], [19], frequency doubling of the 1.8-1.9 μm ultrafast laser emission [20], fiber-optic Cherenkov radiation technique inside a short piece of photonic crystal fiber [21] and direct generation using the neodymium-doped fiber (Nd-fiber) quasi-three-level F3/2 -4 I9/2 transition [22]- [31]. The last one is preferred due to its robustness and simplicity.…”

Section: Introductionmentioning

confidence: 99%

“…Second, grating pair with adjacent collimators with limited aperture size was implemented, causing strong spectrum filtering at 1060 nm and forced the laser to work at ∼900 nm [24], [26]. Another approach to suppress the strong laser oscillation at ∼1064 nm is to insert into the cavity a short-pass dichroic mirror with high transmission at ∼900 nm and high reflectivity at ∼1064 nm [22], [23]. Rusu et al have utilized original semiconducting saturable absorber mirror (SESAM) including 20 pairs of AlAs -Al0.2Ga0.8As quarter-wave layers and forming a distributed Bragg reflector with 100-nm reflection bandwidth (860-960 nm) to suppress emission at 1064 nm [27].…”

Section: Introductionmentioning

confidence: 99%

Nd-Doped Polarization Maintaining All-Fiber Laser With Dissipative Soliton Resonance Mode-Locking at 905 nm

Mkrtchyan

Gladush

Melkumov

et al. 2021

J. Lightwave Technol.

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Moving the fiber laser emission to the region below one micron may provide a cheaper, more compact and robust alternatives to the existing solid state lasers. Here, for the first time we report a neodymium mode-locked fiber laser emitting at 905 nm in the all-fiber polarization maintaining configuration. We obtain a self-starting pulse generation in nonlinear amplifying loop mirror (NALM) cavity configuration. To suppress a dominant emission at 1064 nm corresponding to a 4-level laser scheme, we use an active fiber -920/1064 division multiplexeractive fiber sandwich-like sequence in the NALM loop. A rectangular shape dissipative soliton had nJ energy, 30 pm spectral width and 80 ÷ 430 ps width linearly depending on the pump power. Excellent agreement with numerical simulation allowed us to recover pulse shape and width for the pulses out of autocorrelation window.

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“…Qian et al [3] demonstrated a passively mode-locked neodymium-doped oscillator featuring a W-type fiber operating at 930 nm with a pulse energy of 2.2 nJ and a pulse duration of 126 fs. Gao et al [4] reported a core-pumped all-normal dispersion mode-locked Nd-doped fiber laser at 910 and 935 nm with a pulse energy of 1.3 nJ and a pulse duration of 198 fs. Recently, Chen et al [5] demonstrated 4.4-nJ 114-fs pulses at ~910 nm using an optimized Nd-doped fiber amplifier, as well as 17-nJ 220-fs pulses at 930 nm [6].…”

Section: Introductionmentioning

confidence: 99%

Broadband and Tunable 920-nm Femtosecond Pulse Generated by an All-Fiber Er:Fiber Laser System

Qian

Luo²,

Qiu

et al. 2021

IEEE Access

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Fiber-optic Cherenkov radiation (FOCR) is a promising nonlinear process that is widely used for nonlinear wavelength conversion. In this study, an all-fiber 920-nm femtosecond pulse source is experimentally demonstrated by using Cherenkov radiation. The 4-nJ 150-fs 1550-nm amplified seed pulse source ensures highly efficient 920-nm pulse generation. Cherenkov radiation is stimulated by inputting the high-energy ultrashort pulse to a highly nonlinear fiber. The dispersion values of the highly nonlinear fiber (HNLF) are carefully chosen to generate CR pulses at 920 nm. The generated pulse has a 150-pJ single pulse energy and a 232-fs pulse duration. The typical 30-nm bandwidth can support a sub-50-fs transformlimited pulse duration. The pump current can be adjusted to tune the central wavelength of the pulse source over 905-930 nm. This very simple approach can generate 920-nm femtosecond pulses. The wavelength range is useful for a wide range of applications, such as two-photon microscopy (TPM) in bio-imaging and so on.

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Core-pumped femtosecond Nd:fiber laser at 910 and 935 nm

Cited by 31 publications

References 15 publications

Ultrafast time-stretch imaging at 932 nm through a new highly-dispersive fiber

Ultrafast time-stretch imaging at 932 nm through a new highly-dispersive fiber

Nd-Doped Polarization Maintaining All-Fiber Laser With Dissipative Soliton Resonance Mode-Locking at 905 nm

Broadband and Tunable 920-nm Femtosecond Pulse Generated by an All-Fiber Er:Fiber Laser System

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