unfold_phase - unfolds the phase of a field (or difractive wavefront)

Calling Sequence

[pha_out]=unfold_phase(num,pha_in,koeff,rad[,type])

Parameters

• num : the dimension of the field
• pha_in :input phase matrix of the field. it must be num*num matrix.
• pha_out : the output phase matrix
• koeff : the coefficient to multiply the phase, it may be necessary to translate the phase into dimensional units
• rad : the radius of blackening aperture. relative to grid size
• type : a identifier to demonstrate the base function (unf3 or unf4) to use.if default then unf3 used.

Description

unfolds the phase by the function unf3 of LightPipes.

Examples

	f1=begin(0.01,1e-6,60);
	f2=lens(f1,5);
	pha=field_pha(f2);
	pha1=unfold_phase(60,pha,1,0.01);
	pha2=unfold_phase(60,pha,1,0.01,1);

	xbasc();drawlater();
	subplot(1,3,1);surf(pha);
	subplot(1,3,2);surf(pha1);
	subplot(1,3,3);surf(pha2);
	drawnow();
 

Author

Chen jingyuan,

See Also

field_pha ,   file_pha ,