首页> 外文会议>Conference on High-Resolution Wavefront Control: Methods, Devices, and Applications IV, Jul 8-9, 2002, Seattle, Washington, USA >New developments in high-resolution liquid crystal spatial light modulators for wavefront control
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New developments in high-resolution liquid crystal spatial light modulators for wavefront control

机译:用于波前控制的高分辨率液晶空间光调制器的新进展

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High resolution devices, using liquid crystal phase modulators, have the ability to correct large phase variations across the aperture. These phase variations are corrected using discrete (pixelated) modulo-2π phase shifts, which simplifies the control scheme by eliminating inter-actuator influence and decreases the response time of the phase modulator by reducing the required stroke. Even with these advantages, modulo-2π phase correction is generally not used if the source is broadband due to degradation from chromatic dispersion. This paper discusses techniques for reducing the angular dispersion using new modulators which are being developed.
机译:使用液晶相位调制器的高分辨率设备具有校正孔径上较大相位变化的能力。这些相位变化可使用离散的(像素化)模2π模相移进行校正,这消除了执行器之间的影响,简化了控制方案,并通过减少了所需的行程来缩短了相位调制器的响应时间。即使具有这些优点,但由于色散的降低,如果光源是宽带的,通常也不会使用模2π相位校正。本文讨论了使用正在开发的新型调制器来减少角度色散的技术。

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