Figure 8. Temperature distribution (blue line) and temperature gradient (black line) at line y = 0 (coordinate origin is at the center of the METH structure).
(a) Point-like METH driven at a current level of 65 mA. Temperature gradient peak-to-peak distance = 10 μm, temperature FWHM = 50.1 μm. (b) 50 μm long METH driven at a current level of 30 mA. Temperature gradient peak-to-peak distance = 55 μm, temperature FWHM = 71.7 μm. (c) Power density on point-like METH at 65 mA. (d) Power density in 50-μm long METH driven at 30 mA.