MEMS-based tunable terahertz wire-laser over 330 GHz
Author(s)Qin, Qi; Reno, John L.; Hu, Qing
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We demonstrate continuous tuning of a terahertz quantum cascade wire laser over a broad range of ~ 330 GHz ( ~ 8.6% of the 3.85 THz center frequency) with single-mode operation. Tuning is achieved with a narrow laser ridge ( ~ λ[subscript o]/8 ) and a moveable MEMS (microelectromechanical systems) side object (plunger) to manipulate the transverse optical mode. The frictionless MEMS plunger enables continuous and reversible tuning. We demonstrate ~ 30 GHz redshift tuning using a silicon plunger and ~ 300 GHz blueshift tuning using a metal plunger. The blueshift tuning range is limited by the bandwidth of the gain medium rather than the tuning mechanism.
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, John L. Reno, and Qing Hu. “MEMS-Based Tunable Terahertz Wire-Laser over 330 GHz.” Optics Letters 36, no. 5 (March 1, 2011): 692. © 2011 Optical Society of America
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