Effective mode selector for tunable terahertz wire lasers
Author(s)Qin, Qi; Han, Ningren; Kao, Tsung-Yu; Reno, John L.; Hu, Qing; Kao, Tsung-Yu; ... Show more Show less
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We demonstrate an effective mode selector design that enables a terahertz quantum cascade wire laser to have a robust single-mode operation at frequencies much lower than the gain peak. This is achieved by selectively guiding the undesired modes into a lossy session while keeping the desired lasing mode largely unperturbed. The large mode discrimination obtained by this mode selector is necessary to further extend the tuning range to the lower half of the gain curve. Additionally, the connectors of this mode selector conveniently provide electrical bias to the wire lasers without degrading the lasing performance.
DepartmentMassachusetts Institute of Technology. Department of Electrical Engineering and Computer Science; Massachusetts Institute of Technology. Research Laboratory of Electronics
Optical Society of America
Qin, Qi, Ningren Han, Tsung-Yu Kao, John L. Reno, and Qing Hu. “Effective Mode Selector for Tunable Terahertz Wire Lasers.” Optics Letters 38, no. 4 (February 15, 2013): 407. © 2013 Optical Society of America.
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