Table 1.

Performance comparison

	Peak power	Slope efficiency	Single mode/multi mode
3rd order DFB	11 mW	142 mW/A	Single mode
1D corrugated DFB	25 mW	250 mW/A	Single mode
2D–7-fold quasi crystala	67 mW	57 mW/A	Multi mode
2D random lasera	21 mW	18 mW/A	Multi mode
Octonacci quasi crystal laser	190 mW	720 ± 16 mW/A 570 ± 14 mW/A (78 K)	Single mode
Octonacci quasi crystal lasera	240 mW	700 ± 12 mW/A 570 ± 11 mW/A (78 K)	Multi mode

Comparison between the peak output power and slope efficiency of a set of 1D and 2D single-frequency-mode and multimode THz lasers fabricated from the same heterostructure

^aIndicates devices with identical dimensions