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Optics Letters

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  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 12 — Jun. 15, 2014
  • pp: 3480–3483

Broadband all-electronically tunable MEMS terahertz quantum cascade lasers

Ningren Han, Alexander de Geofroy, David P. Burghoff, Chun Wang I. Chan, Alan Wei Min Lee, John L. Reno, and Qing Hu  »View Author Affiliations


Optics Letters, Vol. 39, Issue 12, pp. 3480-3483 (2014)
http://dx.doi.org/10.1364/OL.39.003480


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Abstract

In this work, we demonstrate all-electronically tunable terahertz quantum cascade lasers (THz QCLs) with MEMS tuner structures. A two-stage MEMS tuner device is fabricated by a commercial open-foundry process performed by the company MEMSCAP. This provides an inexpensive, rapid, and reliable approach for MEMS tuner fabrication for THz QCLs with a high-precision alignment scheme. In order to electronically actuate the MEMS tuner device, an open-loop cryogenic piezo nanopositioning stage is integrated with the device chip. Our experimental result shows that at least 240 GHz of single-mode continuous electronic tuning can be achieved in cryogenic environments (4K) without mode hopping. This provides an important step toward realizing turn-key bench-top tunable THz coherent sources for spectroscopic and coherent tomography applications.

© 2014 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(230.4685) Optical devices : Optical microelectromechanical devices

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: April 28, 2014
Manuscript Accepted: May 7, 2014
Published: June 5, 2014

Virtual Issues
Vol. 9, Iss. 8 Virtual Journal for Biomedical Optics

Citation
Ningren Han, Alexander de Geofroy, David P. Burghoff, Chun Wang I. Chan, Alan Wei Min Lee, John L. Reno, and Qing Hu, "Broadband all-electronically tunable MEMS terahertz quantum cascade lasers," Opt. Lett. 39, 3480-3483 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-12-3480


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References

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