Abstract-Y coupled terahertz quantum cascade lasers

http://arxiv.org/abs/1206.0972

Owen P. Marshall, Subhasish Chakraborty, Md. Khairuzzaman, Harvey E. Beere, David A. Ritchie

(Submitted on 5 Jun 2012)

Abstract: Here we demonstrate a Y coupled terahertz (THz) quantum cascade laser (QCL) system. The two THz QCLs working around 2.85 THz are driven by independent electrical pulsers. Total peak THz output power of the Y system, with both arms being driven synchronously, is found to be more than the linear sum of the peak powers from the individual arms; 10.4 mW compared with 9.6 mW (4.7 mW + 4.9 mW). Furthermore, we demonstrate that the emission spectra of this coupled system are significantly different to that of either arm alone, or to the linear combination of their individual spectra.

Comments:	9 pages, 3 figures
Subjects:	Optics (physics.optics); Other Condensed Matter (cond-mat.other)
Cite as:	arXiv:1206.0972v1 [physics.optics]

Submission history

From: Subhasish Chakraborty [view email]
[v1] Tue, 5 Jun 2012 15:53:34 GMT (1026kb