MEMS-based tunable terahertz wire-laser over 330 GHz
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Hu_MEMS-based tunable.pdf
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Author(s)
Qin, Qi
Reno, John L.
Hu, Qing
Date Issued
February 2011
Journal
Optics Letters
Publisher
Optical Society of America
Citation
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
Version
Final published version
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Research Laboratory of Electronics
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DOI of Published Version
https://doi.org/10.1364/OL.36.000692
