Title :
Spectroscopy of the relaxation dynamics in Tm-Ho-fiber lasers
Author :
Orsila, L. ; Kivistö, S. ; Herda, R. ; Okhotnikov, O.G.
Author_Institution :
Tampere Univ. of Technol., Tampere
Abstract :
Recent studies discover important parameters of thulium doped fiber. Particularly, the dependence of the emission efficiency on the doping level and transition cross section have been determined. Adding holmium as a co-dopant was shown to increase the pump absorption and to extend the thulium gain spectrum to longer wavelengths. The properties of host material and co-doping affect strongly the gain broadening and are used as an instrumental in designing the optical amplifiers, tunable and mode-locked laser systems.
Keywords :
carrier relaxation time; doping profiles; fibre lasers; holmium; infrared spectra; laser beams; laser transitions; optical materials; spectral line broadening; thulium; JkJk:Tm,Ho; absorption spectrum; co-doping effect; doping level; gain broadening; pump absorption; thulium gain spectrum; thulium-holmium codoped fiber lasers; transition cross section; Absorption; Doping; Fiber lasers; Instruments; Laser transitions; Optical design; Optical materials; Pump lasers; Spectroscopy; Stimulated emission;
Conference_Titel :
Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-0931-0
Electronic_ISBN :
978-1-4244-0931-0
DOI :
10.1109/CLEOE-IQEC.2007.4386196
