BEAM-SHAPING DEVICE

摘要

A beam shaping device includes a first phase modulation unit including a phase-modulation type SLM, and displaying a first phase pattern for modulating a phase of input light, a second phase modulation unit including a phase-modulation type SLM, being optically coupled to the first phase modulation unit, and displaying a second phase pattern for further modulating a phase of light phase-modulated by the first phase modulation unit, and a control unit providing the first and second phase patterns to the first and second phase modulation units, respectively. The first and second phase patterns are phase patterns for approximating an intensity distribution and a phase distribution of light output from the second phase modulation unit, to predetermined distributions.

主权项

1. A beam shaping device comprising:
a first phase modulation unit including a phase-modulation type spatial light modulator, and displaying a first phase pattern for modulating a phase of input light; a second phase modulation unit including a phase-modulation type spatial light modulator, being optically coupled to the first phase modulation unit, and displaying a second phase pattern for further modulating a phase of light phase-modulated by the first phase modulation unit; and a control unit configured to provide the first phase pattern and the second phase pattern to the first phase modulation unit and the second phase modulation unit, respectively, wherein the first phase pattern and the second phase pattern are phase patterns for approximating an intensity distribution and a phase distribution of light output from the second phase modulation unit, to predetermined distributions.