Title :
Analysis of sub-picosecond mid-infrared pulse propagation in a quantum cascade laser below and above threshold
Author :
Parz, W. ; Pfaffli, O. ; Muller, Tim ; Darmo, J. ; Austerer, M. ; Strasser, G. ; Unterrainer, K. ; Wilson, L.R. ; Cockburn, J.W. ; Krysa, A.B. ; Roberts, J.S.
Author_Institution :
Centre for Micro & Nano Struct., Vienna Univ. of Technol., Vienna, Austria
Abstract :
Spectroscopy done on the light emitted by quantum cascade lasers (QCLs) provides only limited information on the optical , thermal, and temporal properties in such a laser. We study such lasers by time domain electric field spectroscopy of sub-picosecond pulse trains propagating through the QCL cavity. This is done by generating broadband mid-infrared pulses by phase matched difference frequency mixing in a 30 mum thick GaSe crystal.
Keywords :
gallium compounds; optical properties; optical pulse generation; quantum cascade lasers; GaSe; QCL cavity; frequency mixing; mid-infrared pulse propagation; optical properties; phase matched difference; pulse generation; quantum cascade laser; sub-picosecond pulse propagation; temporal properties; thermal properties; time domain electric field spectroscopy; Gas lasers; Nonlinear optics; Optical frequency conversion; Optical mixing; Optical propagation; Optical pulse generation; Optical pulses; Quantum cascade lasers; Spectroscopy; Stimulated emission;
Conference_Titel :
Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-4079-5
Electronic_ISBN :
978-1-4244-4080-1
DOI :
10.1109/CLEOE-EQEC.2009.5191922
