Title :
Room temperature operation of distributed feedback AlGaAs/GaAs quantum cascade lasers
Author :
Schrenk, W. ; Anders, Solveig ; Gornik, E. ; Strasser, G.
Author_Institution :
Festkorperelektronik, Univ. Wien, Austria
Abstract :
Summary form only given. We present our latest results on the improvement of GaAs based chirped superlattice QCLs. The active material of our structure consists of 40 periods of an AlGaAs/GaAs chirped superlattice with an Al content of 45% in the barriers and is designed for an emission wavelength of 12.5 /spl mu/m. The emission spectra were measured with a Fourier transform spectrometer and the optical power was measured with a calibrated thermopile detector. The DFB lasers show single mode emission in pulsed operation.
Keywords :
Fourier transform spectra; III-V semiconductors; aluminium compounds; distributed feedback lasers; gallium arsenide; laser modes; laser variables measurement; quantum cascade lasers; semiconductor superlattices; 12.5 micron; AlGaAs-GaAs; AlGaAs/GaAs chirped superlattice; AlGaAs/GaAs quantum cascade lasers; DFB lasers; Fourier transform spectrometer; GaAs based chirped superlattice QCLs; calibrated thermopile detector; distributed feedback lasers; emission spectra; pulsed operation; room temperature operation; single mode emission; Chirp; Distributed feedback devices; Fourier transforms; Gallium arsenide; Optical materials; Power measurement; Quantum cascade lasers; Superlattices; Temperature; Wavelength measurement;
Conference_Titel :
Lasers and Electro-Optics, 2002. CLEO '02. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Long Beach, CA, USA
Print_ISBN :
1-55752-706-7
DOI :
10.1109/CLEO.2002.1033554
