Title :
Frequency noise of free-running room temperature quantum cascade lasers
Author :
Tombez, L. ; Francesco, J. Di ; Schilt, S. ; Domenico, G. Di ; Hofstetter, D. ; Thomann, P.
Author_Institution :
LT F Lab. Temps- Frequence, Univ. de Neuchatel, Neuchatel, Switzerland
Abstract :
The authors have investigated the frequency noise properties of commercial free-running singlemode quantum cascade laser (QCL) emitting in the 4.6-μm wavelength range and operated in continuous wave mode near room temperature. Using the side of a molecular absorption line in standard single pass direct absorption spectroscopy, the frequency noise measurement was performed by converting the laser frequency fluctuations into intensity fluctuations.
Keywords :
laser modes; laser noise; quantum cascade lasers; continuous wave mode; free running quantum cascade lasers; frequency noise; intensity fluctuation; laser frequency fluctuation; molecular absorption line; single mode quantum cascade laser; single pass direct absorption spectroscopy; temperature 293 K to 298 K; wavelength 4 mum to 6 mum; Frequency measurement; Laser modes; Laser noise; Measurement by laser beam; Noise measurement; Quantum cascade lasers;
Conference_Titel :
Lasers and Electro-Optics Europe (CLEO EUROPE/EQEC), 2011 Conference on and 12th European Quantum Electronics Conference
Conference_Location :
Munich
Print_ISBN :
978-1-4577-0533-5
Electronic_ISBN :
Pending
DOI :
10.1109/CLEOE.2011.5942565
