field_pha - get the phase of the field

Calling Sequence

[pha]=field_pha(field_in)

Parameters

• field_in :input field. it must be diffractive wavefront.
• pha : the output phase matrix

Description

get the phase of the field. note the output is 2D matrix.

Examples

	F1=begin(0.01,1e-6);
	F2=gauss(F1,0.004);
	F3=forvard(F2,1);
	pha=field_pha(F3);
	surf(pha);
 

Author

Chen jingyuan,

See Also

unf3 ,   unf4 ,   file_pha ,   field_int ,   field_contents ,