According to the result of examination , when using this spatial light modulator steer under a driving voltage of 2100 volt , and made the write light ’ s intensity in 4 . 3 w , the exposure time was 4 sec , in this case , the image can be clearly readout by the he - ne laser in intensity of 1 . 24 w 实验表明,该空间光调制器可以在2100v的电压下,使写入光强为4 . 3 w图像,经过4s的曝光写入器件,并由光强为1 . 24 w氦氖激光读出清晰的图像。
On behalf of pockels effect of electro - optic crystals , or kerr effect , various optical addressed spatial light modulator can be developed to the realize electrically driven spatial light modulation , so as to control such transfer conditions as converging , diverging , defecting and transferring 利用电光晶体的普克尔斯效应或克尔效应可以研制出各种光寻址空间光调制器来进行电驱动下的空间光调制,以此来控制光束的聚散、偏转等传播状态。
After the spatial light modulator was made by the choice material , the expected optic purpose of device designing is validated . and , the influence from each physical factor on optical result turns out in this course , the best working point was made too . it can bring principle reference to the further design and apply of device 继而,作者根据用所选材料制作出的空间光调制器成品,通过实验验证了原理中预期的光学效果,并且得出了各物理参数对光学结果的影响关系,确定出器件最佳的工作点,为器件的进一步改良和实用研究奠定了基础。
A cyclic radial shearing interferometer was used to diagnose the wavefront distortion of a laser system and an lcslm ( liquid crysnd spatial ligh modulator ) was used to control it . some results have been summarized as follows : l . according to the theory of scalar quanity diffeaction and the model of the random gaussian phase screen of low frequency wavefront , the effect of the low frequency wavefront with different rms gradient on the focal spot of a laser beam was studied 本论文在激光光束波前畸变检测和控制上进行了新的探索，主要就空间相位调制环路径向剪切干涉仪以及它对波前畸变的检测和液晶空间光调制器及其对中频段波前畸变的控制进行了研究，其研究的内容和取得的成果如下：一、根据标量衍射理论，结合低频波前畸变的高斯随机位相分布模型，研究了不同均方根梯度低频畸变波前对激光光束焦斑聚焦性的影响，并采用描述中频段波前畸变的功率谱密度概念，模拟计算了它对激光焦斑旁瓣的贡献。
7 . based on our crsi and algorithm and double lcslm , an adaptive optical hardware system which c & n be used to model arbitrary complicated wavefront and the compensation of the wavefront can be accomplished was built . and according to the characteristic of a crs interferogram of a step wavefront produced by an lctv , the pixel - level calibration of this system is implemented 七、采用已建立的空间相位调制环路径向剪切干涉仪及其波前重建算法，和位相调制持性已知的两块液晶空间光调制器，创建了一套用于模拟产生任意畸变波前并加以检测和反馈控制的自适应光学硬件系统，并通过台阶波前对该系统实现了像素级校准。
In this thesis , the basic operation in the optical computation was studied by analyzing the course of laser beams transmitting through a vmm , which is composed of an array of vertical cavity surface - emitting lasers , spherical and cylindrical lens , an array of multiple quantum well spatial light modulators and an array of the detectors 本文研究的光学矢量-矩阵乘法器主要是由垂直腔面发射激光器( vcsel )阵列、球面透镜和柱面透镜组、多量子阱空间光调制器( mqwslm )及ccd阵列构成。作为小尺寸的集成光学器件,必须要考虑衍射的作用。
An optically addressed spatial light modulator ( oa - slm ) made of brd96n and based on its good nonlinear optical characteristics is presented . an experiment study on the mutual conversion of coherent - to - incoherent image is carried out , and the mutual modulation of two spatial light beams can be realized base on the gene - variant br films 基于br膜良好的非线性光学特性，开展了br膜作为一种光寻址的空间光调制器( br - oa - slm )的研究，进行了相干光图像信息与非相干光图像信息的相互转换实验，实现了空间两束光的相互调制。
The influences of recording conditions on the snr of the black - white digital images retrieved from fourier transform holograms were experimentally studied . the holograms were recorded on photoresist plates using an electrical addressed tft - lcslm as a data input device , and a normal ccd camera was applied for detecting reconstructed images 采用电寻址液晶空间光调制器作为存储系统的组页器，常规ccd探测器作为重构图像的检测器件，实验研究了在光刻胶干板上记录黑白二值条纹图像的傅里叶全息图时，记录条件对重构图像信噪比的影响。
Furthermore , the range of measurement of it was pointed out . all the analysis shows that our crsi 1il can be used to measure the spatial mid and low frequency wavefront distortion . 5 . based on our crsi and algorithm , the phase modulation characteristic of an lcslm was measured 五、利用环路径向剪切干涉仪共光路、双光束干涉的特点，全场准确测量了液晶空间光调制器的位相调制特性，并且利用它的位相调制特性实现了台阶位相板畸变波前的补偿，由此证明了液晶空间光调制器可用于控制波前畸变。
The control of the spatial mid frequency wavefront distortion was achieved based on our cri wavefront sensing and lctv wavefront correcting system . the results of our research show that crs interferometer can be used to diagnosing the mid and low frequency wavefront distortion of a laser beam and lcslm can be used to availably controlled it 通过以上研究，说明我们建立的环路径向剪切干涉仪可以用于icf激光驱动器的中低段波前畸变的检测，并且液晶空间光调制器可用于它的前级中存在的中频段波前畸变的校正。
