set_dwf_timestamp - set the timestamp of a diffractive wavefront .
set the timestamp of the input wavefront .
F1=begin(1,1e-6,100); F2=circ_ap(F1,0.5); dwf_fits(F2,"f2"); F3=set_dwf_timestamp(F2,1); dwf_fits(F3,"f3");
Chen jingyuan, Gan guangyong (IAPCM, Beijing,China.)
begin , pl_wave , sp_wave , set_dwf_frame ,