Monday, November 17, 2014

Abstract-Tri-channel single-mode terahertz quantum cascade laser


Tri-channel single-mode terahertz quantum cascade laser

Tao Wang, Jun-Qi Liu, Feng-Qi Liu, Li-Jun Wang, Jin-Chuan Zhang, and Zhan-Guo Wang  »View Author Affiliations
Optics Letters, Vol. 39, Issue 23, pp. 6612-6615 (2014)
We report on a compact THz quantum cascade laser source emitting at, individually controllable, three different wavelengths (92.6, 93.9, and 95.1 μm). This multiwavelength laser array can be used as a prototype of the emission source of THz wavelength division multiplex (WDM) wireless communication system. The source consists of three tapered single-mode distributed feedback (DFB) terahertz quantum cascade lasers fabricated monolithically on a single chip. All array elements feature longitudinal as well as lateral single-mode in the entire injection range. The peak output powers of individual lasers are 42, 73, and 37 mW at 10 K, respectively.
© 2014 Optical Society of America

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