铌酸钡钠的温度匹配研究

来源 :中国激光 | 被引量 : 0次 | 上传用户:cqz17
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
本文就BNN主轴截面通光的情形,将温度和角度作为两个独立变量对倍频过程进行了分析,得到谐波功率与温度和角度的近似关系、谐波各方向的折射率随温度的变化关系以及在完全位相匹配情况下温度与角度的关系。实验结果与理论符合得较好。
其他文献
通过分析激光在不同功率密度、不同入射角度打靶条件下的等离子X射线辐射。本文给出了各种元素等离子体喷射图形以及辐射特点。利用激光与物质相互作用原理,对实验结果作了分析。
以6-311 G(3df,3pd)为基组,采用B3LYP方法研究了不同外电场(-0.05~0.05 a.u.)对CHF=CHF基态分子的几何参数、总能量、电偶极矩、电荷分布、最高占据轨道(HOMO)能级、最低占据轨道(LUMO)能级及能隙的影响,在优化构型的基础上,使用相同的基组和同等强度的外电场,采用CIS-DFT方法研究了CHF=CHF分子前8个激发态的激发能 、跃迁波长和振子强度。结果表明:CHF=CHF的几何参数随电场强度大小及方向变化明显。电场由-0.05 a.u.变化至0.05 a.u.时,
Mid-infrared (MIR) integrated photonics has attracted broad interest due to its promising applications in biochemical sensing, environmental monitoring, disease diagnosis, and optical communication. Among MIR integration platforms, germanium-based platfor
Packaging of Distributed feedback (DFB) laser array based on reconstruction-equivalent-chirp (REC) technology is a bridge from chip to system, and influences the practical process of REC chip. In this letter, DFB laser arrays of 4 channel @1 310 nm and 8
A vapor cell provides a well-controlled and stable inner atmosphere for atomic sensors, such as atomic gyroscopes, atomic magnetometers, and atomic clocks, and its hermeticity affects the stability and aging of atomic sensors. We present the micro-fabrica
Single-photon light detection and ranging (lidar) offers single-photon sensitivity and picosecond timing resolution, which is desirable for high-precision three-dimensional (3D) imaging over long distances. Despite important progress, further extending th
期刊
期刊
Germinated brown rice (GBR) is rich in gamma oryzanol which increase its consumption popularity, particularly in the health food market. The objective of this research was to apply the near infrared spectroscopy (NIRS) for evaluation of gamma oryzanol of
基于柯林斯(Collins)积分公式,导出了高斯-谢尔模型(GSM)光束在有色差的分数傅里叶变换(FRFT)系统中的光谱传输表达式,并以Lohmann Ⅱ型系统为例,通过数值计算与分析,研究了色差大小、分数傅里叶变换阶数、以及相对横向坐标对输出面归一化光谱和相对谱移动的影响。研究表明,相对谱移动随FRFT阶数的变化而改变,色差的大小会影响相对谱移动的大小、光谱跃变发生的位置以及光谱跃变量的大小;相对谱移动随色差的变化而改变,在不同阶数的FRFT系统中,相对谱移动随色差的变化规律各不相同。此外,归一化的光谱
We present a sparse Bayesian reconstruction method based on multiple types of a priori information for multispectral bioluminescence tomography (BLT). In the Bayesian approach, five kinds of a priori information are incorporated, reducing the ill-posednes