Title :
Instantaneous power and threshold in continuous wave quantum cascade lasers
Author :
Hoffman, Anthony J. ; Braun, Phillip X. ; Escarra, Matthew D. ; Howard, Scott S. ; Franz, Kale J. ; Wang, Xiaojun ; Fan, Jen-Yu ; Gmachl, Claire
Author_Institution :
Dept. of Electr. Eng., Princeton Univ., Princeton, NJ, USA
Abstract :
Using low-duty cycle pulses superimposed on a DC current, we determine the type of power roll-over and obtain the instantaneous threshold current, current efficiency and core temperature of a quantum-cascade laser in continuous wave operation.
Keywords :
optical pulse generation; quantum cascade lasers; DC current; continuous wave operation; continuous wave quantum cascade lasers; core temperature; current efficiency; instantaneous power; low-duty cycle pulses; power roll-over; threshold current; Current measurement; Laser modes; Optical pulses; Power generation; Power lasers; Pulse measurements; Quantum cascade lasers; Semiconductor lasers; Temperature; Threshold current; (140.5965) Semiconductor lasers, quantum cascade; (140.6810) Thermal effects;
Conference_Titel :
Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-55752-869-8
Electronic_ISBN :
978-1-55752-869-8
