Table 1 Performance comparison.

From: Full-color enhanced second harmonic generation using rainbow trapping in ultrathin hyperbolic metamaterials

References

EF

\({\eta }^{(2\omega )}\)

Peak pump intensity (GW/cm2)

Average pump power (mW)

10 dB Bandwidth (nm)

15

NA

5.4 × 10−10

NA

150

N/A

16

10,000

2 × 10−5

3.4

11.4

~1010–1070

19

10,000

6 × 10−5

3.4

11.4

~970–1000

22

1700

3 × 10−7

60

NA

~780–806

23

NA

NA

0.3

47.1

~750–855

25

300

2 × 10−6

<63.7

0.8

~770–860

Our work

535

1.13 × 10−6

~8.73

8.80

800–1300