The white lasers light from source travel with intensity I (z) will go through the DC subtract (Figure 3). The reflection of white laser light have two of variable intensity and phase angle . The photon light will travel look like the AC wave form. The intensity of AC travel rectifier circuit which convert the wave form become linear focus like electrical device converts alternating current (AC) which periodically reverses direction become direct current ( DC current) which flows in only one direction.The process is calling polariton interferometer laser light . Also , when process it will change the angle of define the phase shift and measurement object phase(Figure2). The intensity in the surface will be the sum of intensity of DC subtract and intensity of ac time with function of cos ( ) angle and the phase shift(Figure 2)