Three-stage MOPA 2 µm fiber laser for ZGP OPO pumping

Lorenz, Dominik; Romano, Clément; Panitzek, Dieter; Forster, Patrick; Schneider, Julian; Büker, Hendrik; Eichhorn, Marc; Kieleck, Christelle

doi:10.1117/12.2610238

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…High peak power nanosecond TDFLs operating at 2μm band have unique applications such as nonlinear frequency conversion [1,2], mid-infrared supercontinuum generation [3] and biomedicine. Compared with the traditional approach of Q-switching, gain-switching is a promising tool due to its compact geometry, narrow linewidth, and convenience in realizing all fiber structures.…”

Section: Introductionmentioning

confidence: 99%

A monolithic 2042nm hybrid pumped gain-switched thulium-doped fiber laser

Ren,

Qi,

et al. 2024

Advanced Fiber Laser Conference (AFL2023)

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We reported a hybrid pumped gain-switched thulium-doped fiber laser (HP-GS-TDFL) at 2042nm in an all-fiber structure. The resonator consists of 0.7m 10/130 single-mode (SM) TDF with a pair of fiber Bragg gratings (FBG) at 2042nm, pumped by a 1550nm nanosecond fiber laser and a 793nm continuous wave (CW) laser diode (LD). Under 1550nm pulse single pump configurations, the GS-TDFL does not reach the lasing threshold at 50kHz and produces <1 μJ energy at 25kHz. Under hybrid pump configurations, the GS-TDFL produces 26μJ energy with 161ns pulse durations at 50kHz and 38μJ energy with 103ns pulse durations at 25kHz. The signal-to-noise ratio (SNR) of the output spectrum at 50kHz is 47dB. The experiment results show that pulses with higher peak power and shorter durations can be obtained by applying the hybrid pump scheme.

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Section: Introductionmentioning

confidence: 99%

A monolithic 2042nm hybrid pumped gain-switched thulium-doped fiber laser

Ren,

Qi,

et al. 2024

Advanced Fiber Laser Conference (AFL2023)

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2.05 μm high-energy thulium-doped fibre amplifier based on backward pumping

Yang,

Zheng,

Huang

et al. 2024

Preprint

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We demonstrate a thulium (Tm)-doped fibre amplifier using a Ho: GdVO4 solid-state laser as the master oscillator operating at 2048.53 nm. In continuous wave (CW) mode, a maximum laser output power of 33.4 W was obtained under a maximum pump power of 151 W injection at 18°C. The slope efficiency of the amplification stage was 19.5%. The output laser wavelength was 2048.57 nm, and the full width at half maximum (FWHM) was 0.14 nm. In Q-switched mode, a maximum single pulse energy of 3.86 mJ was obtained at a pulse repetition frequency (PRF) of 5 kHz with a pulse width of 22.1 ns, corresponding to a peak power of 174.7 kW and an average output power of 19.3 W. No nonlinear optical effects, such as stimulated Raman scattering (SRS) or stimulated Brillouin scattering (SBS) was observed throughout the experiment, and the fibre amplifier output remained stable. Ultimately, the maximum single pulse energy obtained by a 2.05 µm backward-pumped Tm-doped fibre amplifier (TDFA) at a PRF of 5 kHz and a pulse width of 22.1 ns was 3.86 mJ.

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Three-stage MOPA 2 µm fiber laser for ZGP OPO pumping

Cited by 2 publications

References 8 publications

A monolithic 2042nm hybrid pumped gain-switched thulium-doped fiber laser

A monolithic 2042nm hybrid pumped gain-switched thulium-doped fiber laser

2.05 μm high-energy thulium-doped fibre amplifier based on backward pumping

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