| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To compute, in a short time period, phase conversion quantities of laser beams that a spatial optical modulator converts. <P>SOLUTION: A laser beam intensity pattern-forming device includes; a first laser beam source; a first phase conversion means which converts spatial phase distributions of laser beams from the first laser beam source according to phase control information; a first Fourier conversion means which optically fourier-converts the laser beams converted by the first phase conversion means and outputs them; and a spatial light phase distribution computation part which computes the spatial phase distributions which the first phase conversion means converts. The spatial light phase distribution computation part includes a repeated computation-based computation loop which comprises a second laser beam source, a second phase conversion means, a second Fourier conversion means, a first phase detection means, a third laser beam source, an intensity conversion means, a third phase conversion means, an inverse Fourier conversion means, a second phase detection means and a phase-controlling means. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
