![]() An 11.4 W combined 980 nm ASE power is obtained with a 9.3% slope efficiency and an 18 dB suppression of the ASE around 1030 nm. By optimizing the active fiber length and the angle cleaving of the output fiber facet, a 10 W all-fiber superfluorescent source operating near 980 nm is demonstrated for the first time, to the best of our knowledge. Ren, Yankun Cao, Jianqiu Ying, Hanyuan Chen, Heng Pan, Zhiyong Du, Shaojun Chen, JinbaoĪ high-power all-fiber superfluorescent source operating near 980 nm is experimentally studied with the help of a large-core distributed side-coupled cladding-pumped Yb-doped fiber. At the launched pump power of 2.15 W, the Brillouin fiber laser generates maximum output power of 1.4 W with a slope efficiency of 79% and the optical signal-to-noise ratio of 77 dB.Įxperimental study on high-power all-fiber superfluorescent source operating near 980 nm By optimizing the length of the Brillouin ring cavity to 10 m, stable singlefrequency Brillouin fiber laser is obtained with 3 kHz linewidth owing to the linewidth narrowing effect. The Brillouin fiber laser is pumped by the amplified laser with a linewidth of 33 kHz and an output power of 2.61 W limited by the damage threshold of the optical isolator. The high-power single-frequency fiber laser is one-stage master-oscillator power amplifier with the maximum output power of 10.33 W, the signal-to-noise ratio of 50 dB and the slope efficiency of 46%. The Brillouin laser system consists of a high-power single-frequency fiber laser and a single-pass Brillouin ring cavity. We demonstrate a high-power, high signal-to-noise ratio single-frequency 1 μm Brillouin all-fiber laser with high slope efficiency. Wang, Jing Hou, Yubin Zhang, Qian Jin, Dongchen Sun, Ruoyu Shi, Hongxing Liu, Jiang Wang, Pu High power, high signal-to-noise ratio single-frequency 1μm Brillouin all-fiber laser The RIN reaches - 160 dBc/Hz between 3 and 20 kHz. Using an optimized servo actuator to directly control the driving current of the pump laser diode, we obtain a large feedback bandwidth of up to 1.3 MHz. Special care has been taken in the study of relative intensity noise (RIN) and its reduction. Here, a linearly polarized high-power ultra-low noise all-fiber laser is demonstrated at a power level of 100 W. Robust, compact all-fiber lasers represent one of the most promising technologies to replace the current laser sources in use based on injection-locked ring resonators or multi-stage solid-state amplifiers. High-power ultra-low noise single-mode single-frequency lasers are in great demand for interferometric metrology. Zhao, Jian Guiraud, Germain Pierre, Christophe Floissat, Florian Casanova, Alexis Hreibi, Ali Chaibi, Walid Traynor, Nicholas Boullet, Johan Santarelli, Giorgio High-power all-fiber ultra-low noise laser Future improvements of thulium fiber lasers are possible due to the extremely wide gain-bandwidth of the active medium and the rapid growth of 2-μm fiber components production. The developed fiber laser could be employed for welding, cutting and marking of thermoplastics in industry, minimally invasive surgery in medicine or sensors in lidar systems. Further increasing of the output power is possible using various power scaling techniques, for example, coherent combination of several Tm-doped fiber lasers. The measured beam quality factor is less than 1.4. ![]() The achieved output power is 60 W with a slope efficiency of 46%. In this work we present an all-fiber narrowband CW laser in near fundamental mode operation based on a Tm-doped double-clad active fiber pumped by 793 nm laser diodes with a central wavelength stabilized at 2039 nm by a fiber Bragg grating. High-power Tm-doped fiber lasers are greatly suitable for various applications, such as material processing, medicine, environmental monitoring and topography. ![]() High-power thulium-doped fiber laser in an all-fiber configurationīaravets, Yauhen Todorov, Filip Honzatko, Pavel ![]()
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