锁模不仅可用损耗调制取得,也可用位相调制来得到。
Mode locking can be induced not only by loss modulation, but also by phase modulation.
从理论上分析了非线性折射率引起的脉冲自位相调制对超短脉冲的影响。
The article theoretically analyzes the impact of self phase modulation caused by nonlinear refractive index on ultrashort pulse.
本文讨论了位相调制彩色编码输出图象的色度、亮度随调制深度变化的规律。
The variation of brightness and chromaticity of output image with modulation depth in phase-modulated colour encoding image is investigated.
提出了一种制作具有预期位相调制度的卤化银乳胶位相型薄全息光栅的方法。
A new method for making a thin silver halide phase holographic grating with an expectation phase modulation is proposed.
本文叙述了用位相调制光外差技术探测光学谐振腔反射特性的原理及实验结果。
The principle and experimental results of phase modulation optical heterodyne detection technique for measuring reflection of optical cavity are described.
从理论上分析光纤陀螺位相调制器及光源不稳定对整机性能特别是对漂移的影响。
The effect of phase modulator of optical fiber gyro and light source stability on overall system property is analyzed.
研究了液晶波前校正器位相调制曲线非线性的校正以及液晶自适应闭环对畸变波前的校正。
The correction of the nonlinearity of the liquid crystal wavefront corrector and the closed loop correction were investigated.
随着对于薄膜位相调制特性要求的提高,该系统将可望在未来的薄膜工业中扮演比较重要的角色。
With the increase of demand for thin film structures with specific phase properties, this white-light spectral interferometer can play an important role in future thin film industry.
而且,利用双狭缝滤波和“交叉滤波”技术能够提取出具有位相调制或者是具有振幅起伏的近场波面。
And the techniques of double-slit filter and "cross-filter" can be used to extract the near field wavefront of the laser beam with phase modulation and amplitude fluctuation.
对投影光栅方法获得的位相调制空间载波图进行二维数字图象处理,实现了散射物体的三维曲面测量。
The shape measuring of a diffuse abject is conducted based on 2-D digital image processing phase modulated fringe pattern acquired by the projection of Ronchi rulings.
采用二元光学位相调制的基本思想,用二元纯位相型光学系统将椭圆高斯型激光束与单模光纤最佳耦合。
Based on the phase modulation of binary optics, the binary phase only masks are used to couple the elliptical Gaussian beam to single mode fiber.
数值模拟了SSD各参量,包括脉冲时间、调制频率、位相调制系数、光栅线色散系数等对束匀滑性能的影响。
The influences oft he parameters of the SSD technique on the beam smoothing performance are numeric ally analyzed.
但由于不同型号的液晶空间光调制器的调制特性,尤其是位相调制特性存在较大的差异,故在实际使用前均需加以测量后才能应用。
Different types of LCSLM have different modulation characteristics, in particular their phase modulation characteristic, so this must be measured before it is used.
利用菲涅耳基尔霍夫衍射积分和非线性近轴波动方程,在远场近似及光学薄近似条件下,得出了位相调制产生“热像”出现的位置及强度满足的解析关系。
According to the Fresnel-Kirchhoff diffraction integral and nonlinear paraxial wave equation, we derive the functional relationship of the intensity of hot image and its location.
波长周期相位相移调制控制也能使混沌激光控制到三周期态和多周期态等。
Chaos is also controlled into periodic state and multi-periodic state by a method of a wavelength periodic modulation.
其次,采用数值计算的方式,分析了输入方波信号与光纤束位相匹配对对比度调制传递函数的影响。
The next, the influence of phase match between input signal and line-array fiber-optic image bundles on the contrast transfer function was analysed digitally.
详细地讨论了有关调制波的若干参数,如波矢量、波长、幅角、位相等。
Several parameters related to modulation wave, such as wave vector, wave length and argument phase etc.
本文介绍一种以液晶空间光调制器作为调制位相信息的衍射元件,获得可变焦长的菲涅耳透镜,以及该元件在光学成像系统中的应用。
A kind of diffraction element modulating phase information by LC space light modulator to get a zoom Fresnel lens, as well as the using of said element to optical imaging system, is introduced.
特点是既可用来观察位相物体,也可把干涉条纹调制在位相连续变化的物体上进行测量。
It can be used to observe phase objects, and the interference fringes can be modulated on the continuously changed phase objects for measurement.
在位相展开区域的边界上,位相展开的路径由像素的强度调制决定。
The path for phase unwrapping is determined by the intensity modulation in the pixels on the boundary of the phase unwrapped areas.
位相全息图一般既有浮雕调制又有折射率调制,它们都会对衍射特性产生影响。
A phase hologram not only has relief modulation but also has refractory index modulation, both modulation will affect the diffraction property of the phase hologram.
通过对CCD采样过程的分析,说明了输入信号与CCD像元位相匹配对调制传递函数(MTF)有影响。
That the phase match between input signal and CCD pixel has influence on the measuring results of MTF is showed by the analysis of the CCD sampling process.
将解调的1位信号值与定位系统调制码逐位进行逻辑组合(例如异或),以产生多个1位相关值。
The demodulated 1-bit signal values are bitwise logically combined (e. g., XORed) with the positioning system modulation code to produce a plurality of 1-bit correlation values.
提出了一种基于条纹调制度分析的位相去包裹新算法。
A novel phase unwrapping algorithm, based on intensity modulation analysis and adaptive threshold is presented.
根据空间光调制器的相位调制作用,提出了一种灰阶纯位相匹配滤波器编码方法。
A kind of coding method of gray-scale phase-only matched filter according to the phase modulation property of the spatial light modulator has presented.
分析了胶片的非线性效应对位相光栅调制深度及编码效果的影响。
The nonlinear effects of the film on the phase modulation depth and encoding results are also analysed.
提出外部光注入半导体激光器混沌相位控制方法,通过周期调制注入光的相位相移将激光器的混沌控制到多种周期状态。
In this paper, a method of chaotic controlling is presented via controlling the phase in semiconductor lasers under to external optical injection.
利用偏振分光棱镜及一维位相型空间光调制器,作者成功地实现了光学CC榕树网络,并给出了任意输入输出对间的连接控制方式。
Optical CC-banyan network has been implemented by using polarizing beam splitters and 1-d phase spatial light modulators, and the routing control between any input-output pair is given.
与传统的计算全息图不同,该方法将全息图平面的纯位相信息加载到空间光调制器上来重建三维漫射体,而没有引入参考光波。
Different from conventional CGHs, the pure-phase information on the hologram plane is loaded on the SLM to reconstruct the 3d diffusive objects without considering the reference wave.
与传统的计算全息图不同,该方法将全息图平面的纯位相信息加载到空间光调制器上来重建三维漫射体,而没有引入参考光波。
Different from conventional CGHs, the pure-phase information on the hologram plane is loaded on the SLM to reconstruct the 3d diffusive objects without considering the reference wave.
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