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)
http://dx.doi.org/10.1364/OL.39.006612

http://www.opticsinfobase.org/ol/abstract.cfm?uri=ol-39-23-6612

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