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| SM ISO690:2012|
DVORNIKOV, Dmitri. High-efficiency 2 μm Tm-doped Fiber Laser. In: NANO-2019: Limits of Nanoscience and Nanotechnologies. 24-27 septembrie 2019, Chişinău. Chișinău, Republica Moldova: 2019, p. 52.
|NANO-2019: Limits of Nanoscience and Nanotechnologies 2019|
Conferința "SPINTECH Summer school “S/F Hybrid Structures for Spintronics”" |
2019, Chişinău, Moldova, 24-27 septembrie 2019
Tm doped fiber laser operating in so called “eye safe” wavelength region and designed in a MOPA configuration has been demonstrated. Large-mode-area fiber design and availability of high-brightness, high-power pump diodes at 795 nm made possible maximum output power of 25 W achieved at incident pump power of 72 W resulting in optical conversion efficiency about 35%. An important factor that led to an interest in 2 μm Tm-doped lasers is significantly broader spectral tunability of Tm-doped fibers compared to Yb-doped fibers, spanning wavelengths from below 1850 nm to beyond 2100 nm, corresponding to more than 200 nm of available bandwidth. This wavelength region covers the water absorption peaks around 1940 nm, making these lasers a valuable tool for precise medical procedures including noninvasive surgery, as well as several atmospheric transmission windows that are useful for remote sensing, laser radar and range-finding.