抄録
We developed a deformable mirror whose surface profile is slightly deformed by nine actuators and varies the phase profile of a reflected laser beam. After Fresnel propagation, the complex amplitude of the reflected laser beam is transformed into another complex amplitude whose profile is different from that of the initial laser beam. Thus, the intensity profile of the reflected laser beam is transformed into another intensity profile with conservation of spatial coherency. We achieved reshaping of a circular-cross-section Gaussian laser (He-Ne:633nm) beam into a rectangular-cross-section beam using a deformable mirror for the first time. The wavefront of the transformed laser beam has a profile similar to that predicted by a beam propagation simulation.
