Title :
Vertical-cavity surface-emitting lasers in the 8-μm midinfrared spectral range with continuous-wave and pulsed emission
Author :
Fürst, Jens ; Schwarzl, Thomas ; Böberl, Michaela ; Pascher, Harald ; Springholz, Gunther ; Heiss, Wolfgang
Author_Institution :
Experimentalphys. I, Bayreuth Univ., Germany
Abstract :
Continuous-wave (CW) as well as pulsed-laser emission from a midinfrared (λ=7.92 μm) IV-VI vertical-cavity surface-emitting laser at 1.8 K is presented. The high-finesse microcavity, containing PbSe as an active medium, was optically pumped with a carbon monoxide laser at a wavelength of 5.28 μm (1894 cm-1) in either CW or Q-switched mode. The maximum achieved CW power was 4.8 mW and pulsed peak powers were up to 23 W. Linewidths are considerably narrower than 0.10 cm-1, corresponding to 0.6 nm.
Keywords :
IV-VI semiconductors; Q-switching; infrared spectra; laser cavity resonators; laser modes; lead compounds; microcavities; optical pulse generation; optical pumping; semiconductor lasers; spectral line narrowing; surface emitting lasers; 1.8 K; 4.8 mW; 5.28 mum; 7.92 mum; 8 mum; BaF2; CO; CW mode; PbSe; PbSe-Pb0.94Eu0.06Se-EuSe-BaF2; Q-switched mode; active medium; carbon monoxide laser; continuous-wave emission; high-finesse microcavity; midinfrared spectral range; optical pumping; pulsed-laser emission; spectral linewidths; vertical-cavity surface-emitting lasers; Laser excitation; Laser modes; Microcavities; Optical pulses; Optical pumping; Optical surface waves; Pump lasers; Stimulated emission; Surface emitting lasers; Vertical cavity surface emitting lasers; Laser resonators; lead alloys; lead compounds; microresonators; optical pumping; optical resonators; semiconductor lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2004.831634
