Franczyk M, Stępień R, Pysz D, Kujawa I, Buczyński R. Phosphate Yb3+ doped air-cladding photonic crystal fibers for laser applications. Photonics Lett. Pol. [Internet]. 2014 Mar. 31 [cited 2024 Apr. 27];6(1):pp. 47-49. Available from: https://photonics.pl/PLP/index.php/letters/article/view/6-17