Psat vs. Power

P-11, 20 um, 1T,0.8m

P-13, 20 um, 1T,0.8m

P-13, 10 um, 430 mT,1.92m

P-11, 10 um, 500 mT, 0.9m

It seems there is linear dependence of Psat on Power.

We don’t believe it, Should not Psat be constant?

An Open question!!!