Title :
Tuning, temporal, and spectral characteristics of the green (λ~549 nm), holmium-doped fluorozirconate glass fiber laser
Author :
Funk, David S. ; Stevens, S.B. ; Wu, S.S. ; Eden, J. Gary
Author_Institution :
Everitt Lab., Illinois Univ., Urbana, IL, USA
fDate :
4/1/1996 12:00:00 AM
Abstract :
The output power, tuning and temporal behavior of the green (539-550 nm), Ho-doped fluorozirconate glass (ZBLAN) fiber laser pumped in the red (λ~643 nm) has been examined in detail. Fibers ranging in length from ~20-86 cm have been studied, and more than 38 mW of output power has been obtained from a 21 cm long fiber for 30% output coupling and 280 mW of absorbed pump power. By inserting two prisms into the optical cavity, the oscillator has been tuned over ~11 mn, and the emission spectrum of the free-running laser has been recorded as a function of pump power at both room temperature and 77 K. The self-pulsing (spiking)behavior of the laser and the influence of depletion of the Ho3+ ground state (5I8) population on the emission spectrum and efficiency of this system are discussed
Keywords :
aluminium compounds; barium compounds; fibre lasers; ground states; holmium; lanthanum compounds; laser accessories; laser beams; laser cavity resonators; laser tuning; laser variables measurement; optical prisms; optical pumping; sodium compounds; zirconium compounds; (5I8) population; 20 to 86 cm; 280 mW; 298 K; 38 mW; 459 nm; 539 to 550 nm; 643 nm; 77 K; Ho-doped fluorozirconate glass laser; Ho3+ ground state; ZBLAN:Ho; ZrF4-BaF2-LaF3-AlF3-NaF:Ho; absorbed pump power; depletion; efficiency; emission spectrum; fiber laser; free-running laser; green region; optical cavity; oscillator; output coupling; output power; prisms; room temperature; self-pulsing behavior; spectral characteristics; spiking behavior; temporal characteristics; tuning; Fiber lasers; Glass; Laser excitation; Laser tuning; Optical pumping; Optical recording; Power generation; Power lasers; Pump lasers; Stimulated emission;
Journal_Title :
Quantum Electronics, IEEE Journal of
