Title :
Room temperature stimulated emission from a CdTe/CdMgTe superlattice laser structure in the red spectral range
Author :
Bacher, G. ; Forchel, A. ; Waag, A. ; Landwehr, G.
Author_Institution :
Wurzburg Univ., Germany
Abstract :
We have investigated the optical response of a red emitting CdTe/CdMgTe laser structure after optical excitation. For the first time, stimulated emission has been observed in this material system at room temperature, demonstrating the potential for the development of CdTe/CdMgTe laser structures in the visible spectral range. An analysis of our experimental data yields a threshold carrier density of about 3.5/spl middot/10/sup 12/ cm/sup /spl minus/2/ and a net gain coefficient of about 95 cm/sup /spl minus/1/ at T=300 K.<>
Keywords :
II-VI semiconductors; cadmium compounds; carrier density; laser transitions; magnesium compounds; semiconductor lasers; semiconductor superlattices; stimulated emission; 300 K; CdTe-CdMgTe; CdTe/CdMgTe superlattice laser structure; net gain coefficient; optical excitation; optical response; red emitting CdTe/CdMgTe laser structure; red spectral range; room temperature; room temperature stimulated emission; stimulated emission; threshold carrier density; visible spectral range; Laser excitation; Molecular beam epitaxial growth; Optical buffering; Optical harmonic generation; Optical pulses; Optical pumping; Optical superlattices; Pump lasers; Stimulated emission; Temperature;
Journal_Title :
Photonics Technology Letters, IEEE
