Thulium sensitised holmium-doped CW fluoride fibre laser of high efficiency

作者： R.M. Percival , D. Szebesta , S.T. Davey , N.A. Swain , T.A. King

DOI: 10.1049/EL:19921433

关键词: Optoelectronics 、 Optics 、 Optical pumping 、 Laser 、 Fluoride 、 Holmium 、 Fiber laser 、 Absorption (electromagnetic radiation) 、 Materials science 、 Optical fiber 、 Thulium

摘要: CW operation of extremely high efficiency has been observed from the 2.024 μm transition holmium in a Tm: Ho codoped singlemode fluoride fibre laser. By pumping into thulium absorption between 820 and 830 nm, output powers 250 mW maximum slope efficiencies 60 % were observed. These results suggest that pump quantum, photon conversion 150 75 respectively, are readily attainable.