Narrow-linewidth Q-switched DBR laser on Ytterbium-doped glass

Ouslimani, Hana; Bastard, Lionel; Broquin, Jean-Emmanuel

doi:10.1016/j.ceramint.2015.03.076

Cited by 10 publications

(6 citation statements)

References 15 publications

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“…Narrow linewidth lasers are widely utilized in a variety of applications, including optical communication, coherent beam combination, coherent Doppler LIDAR, sensing, spectroscopy, highresolution measurement, and so on [1][2][3][4][5][6]. Among the different types of lasers, fiber lasers have a great advantage in achieving narrow linewidth emission, due to the variety of filters that can be designed to restrict the number of lasing modes flexibly.…”

Section: Introductionmentioning

confidence: 99%

Observation of Q-switched and continuous wave regimes with mode-hopping in Er-doped fiber lasers incorporating a dynamic population grating

Wen¹,

Fan²,

Wang³

et al. 2023

Preprint

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Dynamic population gratings (DPGs) in rare-earth doped fibers are prevalent devices in fiber lasers for the production of single-longitudinal-mode emission, Q-switched pulses, and wavelength self-sweeping regimes. This study presents a transition from Q-switched state to continuous wave (CW) state, accompanying irregular mode-hopping, in an erbium-doped fiber laser with a heavily-doped DPG centered at 1549.95 nm. Our results demonstrate that the transition between these two states can be achieved by adjusting the pump power. The repetition frequency of the Q-switched pulse increases monotonically with the increasing pump power, while the pulse duration initially narrows and then expands because the reduced peak intensity weakens the nonlinear effect. Additionally, modulation peaks are evident on both the Q-switched pulse train and the CW background, which are induced by the irregular mode-hopping caused by the DPG. Furthermore, we observe that the central wavelength fluctuates within a range of 0.05 nm. These results provide valuable insight into the DPG effect in heavily-doped fibers.

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Section: Introductionmentioning

confidence: 99%

Observation of Q-switched and continuous wave regimes with mode-hopping in Er-doped fiber lasers incorporating a dynamic population grating

Wen¹,

Fan²,

Wang³

et al. 2023

Preprint

View full text Add to dashboard Cite

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“…Due to their characteristics of a short pulse duration and high peak power, Q-switched lasers are widely used in optical communication, detection, and sensing [1][2][3][4] and have been extensively investigated in recent years [5][6][7]. In some specific applications, such as nonlinear frequency conversion, biomedicine, and coherent detection, short-pulse lasers with narrow bandwidths have an excellent performance and attractiveness [8][9][10][11]. However, laser operation with both a narrow bandwidth and a short pulse is challenging.…”

Section: Introductionmentioning

confidence: 99%

A Linearly Polarized Wavelength-Tunable Q-Switched Fiber Laser with a Narrow Spectral Bandwidth of 112 MHz

Zhu

Yang

Liu

et al. 2023

Sensors

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A tunable and narrow-bandwidth Q-switched ytterbium-doped fiber (YDF) laser is investigated in this paper. The non-pumped YDF acts as a saturable absorber and, together with a Sagnac loop mirror, provides a dynamic spectral-filtering grating to achieve a narrow-linewidth Q-switched output. By adjusting an etalon-based tunable fiber filter, a tunable wavelength from 1027 nm to 1033 nm is obtained. When the pump power is 1.75 W, the Q-switched laser pulses with a pulse energy of 10.45 nJ, and a repetition frequency of 11.98 kHz and spectral linewidth of 112 MHz are obtained. This work paves the way for the generation narrow-linewidth Q-switched lasers with tunable wavelengths in conventional ytterbium, erbium, and thulium fiber bands to address critical applications such as coherent detection, biomedicine, and nonlinear frequency conversion.

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“…[1]. Besides, nonlinear frequency conversion [2], Doppler LIDAR [3] and coherent beam combinations [4,5] require that narrow bandwidths of the short pulses to elevate the conversion efficiency, measurement accuracy and beam quality. Generally, a Qswitching and a band-limited element are both necessary to achieve, separately, a Q-switched pulse emission and a narrow spectral bandwidth effect.…”

Section: Introductionmentioning

confidence: 99%

Narrow bandwidth Q-switched Erbium-doped fiber laser based on dynamic saturable absorption filtering effect

Wen,

Wang,

Chen

et al. 2020

Preprint

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We proposed a narrow spectral bandwidth Erbium-doped fiber (EDF) laser Q-switched by a homemade saturable dynamic induced grating (SDIG) which is introduced via reforming the structure of a fiber saturable absorbers FSA with a piece of EDF and a fiber Bragg grating. The SDIG integrates both saturable absorption and spectral filtering effect simultaneously, which was confirmed through theoretical analysis and experimental results for the first time, to the best of our knowledge. Further study verified that the spectral width of the Q-switched emissions is decided by the length of the SDIG and the input power of the pump source. The Q-switched pulse with the narrowest spectral width of about 29.1 pm achieved in this work is the narrowest bandwidth pulse in the domain of the FSA Q-switched fiber lasers when the length of SDIG and pump power are 20 cm and 250 mW, respectively. Our method provides a simple way to obtain the Q-switched pulses with narrow bandwidths, which have promising applications for nonlinear frequency conversion, Doppler LIDAR and coherent beam combinations.

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Narrow-linewidth Q-switched DBR laser on Ytterbium-doped glass

Cited by 10 publications

References 15 publications

Observation of Q-switched and continuous wave regimes with mode-hopping in Er-doped fiber lasers incorporating a dynamic population grating

Observation of Q-switched and continuous wave regimes with mode-hopping in Er-doped fiber lasers incorporating a dynamic population grating

A Linearly Polarized Wavelength-Tunable Q-Switched Fiber Laser with a Narrow Spectral Bandwidth of 112 MHz

Narrow bandwidth Q-switched Erbium-doped fiber laser based on dynamic saturable absorption filtering effect

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