1) Grating period
光栅周期
1.
The single beam s coupling efficiency is the key to the combined output power in incoherent fiber laser beam combination system,which is affected by focal length of lens,grating period and light spot radius.
单光束耦合效率是决定非相干组束系统输出功率的关键,它受到透镜焦距、光栅周期和光斑半径等参数的影响。
2.
Though theoretic analysis and numerical simulations,it has been proved that the precise control of deviation angles of central laser beam and combining beam plays an important role in increasing the diffraction efficiency,higher diffraction efficiency correspond to larger grating period and smaller grating thickness.
通过理论分析和数值仿真,结果表明对中心激光入射角偏移及组束光角偏移的精确控制是提高光栅衍射效率的光健,高的衍射效率对应较大的光栅周期和较小的光栅厚度。
3.
Through theoretical analysis and numerical simulations,it is proved that the lower lateral off-set,defocusing and lens focus,and the higher grating period would be advantageous,also an optimum spot radius exists which corresponds to a maximum value of coupling efficiency.
理论分析及仿真研究结果表明,较小的高斯模场纵向偏移、离焦度和透镜焦距,较大的光栅周期对提高耦合效率是有利的,并且还存在最佳的光斑半径。
2) 2-d grating
周期光栅
1.
Calculation and analysis of 2-d grating for long-wavelength GaAs QWIPs;
长波GaAs QWIP二维周期光栅的耦合效率研究
3) chirped gratings
变周期光栅
4) long period grating
长周期光栅
1.
Recent progress on imprinting technologies and applications of photonic crystal fiber long period gratings;
光子晶体光纤长周期光栅制作技术与应用最新进展
2.
The transmission spectrum of long period grating was analized by a combination of coupled mode theory and transfer matrix method.
用耦合模方法和传输矩阵法相结合对长周期光栅的传输光谱特性进行了研究， 提出了用相移长周期光栅使双峰的增益谱线平坦化。
3.
Theoretical and experimental study on how to pack long period gratings has been made.
对于长周期光栅 ,谐振波长阶数越高 ,封装材料折射率对其特性的影响越大 ;封装材料折射率小于包层时 ,随封装材料折射率增大 ,波长减小 ;封装材料折射率大于包层时 ,波长向长波长移动 1。
5) long-period fiber grating
长周期光栅
1.
Then the progress and values of the research into long-period fiber grating are discussed.
本论文首先综述了光纤光栅的发展、结构、分类及布拉格光栅和长周期光栅研究及其应用情况，进而指出级联长周期光栅的研究现状及研究意义。
6) quasi-periodic grating
准周期光栅
补充资料：凹面光栅
分子式：
CAS号：
性质：又称罗兰光栅（Rolland grating）。它的作用是使光既衍射又聚焦。因而凹面光栅摄谱仪只需光栅、狭缝及感光板三部分。它可减少吸收现象，只存在光栅面一次反射的光损失，且无色差。可用于远紫外及远红外光谱区域。
CAS号：
性质：又称罗兰光栅（Rolland grating）。它的作用是使光既衍射又聚焦。因而凹面光栅摄谱仪只需光栅、狭缝及感光板三部分。它可减少吸收现象，只存在光栅面一次反射的光损失，且无色差。可用于远紫外及远红外光谱区域。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条