Title :
Carrier dynamics investigation in a quantum cascade laser using Mid-IR femtosecond pulses
Author :
Liu, Sheng ; Lalanne, Elaine ; Johnson, Anthony ; Liu, Peter Q. ; Gmachl, Claire
Author_Institution :
Dept. of Phys., Univ. of Maryland, Baltimore County, Baltimore, MD, USA
Abstract :
In a room temperature 4.5 μm QCL resonantly pumped with fs Mid-IR pulses, we observe an ultrafast gain recovery within the first 200 fs, gain oscillation within the 1 ps and a slower gain recovery of lifetime ~2-3 ps.
Keywords :
high-speed optical techniques; optical pumping; quantum cascade lasers; carrier dynamics investigation; mid-IR femtosecond pulses; quantum cascade laser; time 1 ps; time 2 ps to 3 ps; time 200 fs; wavelength 4.5 mum; Optical pulses; Optical pumping; Optical superlattices; Probes; Quantum cascade lasers; Stimulated emission; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2011 Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4577-1223-4
