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[会议论文] 作者：ChangheZhou;,
来源：The 4th Advances in Optoelectronics and Micro/nano-optics (A 年份：2014
Deep-etched gratings mean that the depth of grating grooves is optimized that novel functions can be obtained,such as polarization beam splitting,wide-band...
[期刊论文] 作者：ChangheZhou,
来源：ChineseOpticsLetters 年份：2005
This paper summarized the recent research results of Changhe Zhou's group of Information Optics Lab in Shanghai Institute of Optics and Fine Mechanics (SIOM). The first is about the Talbot self-imaging research. We have found the symmetry r......
Measuring ultrashort optical pulses using multi-shot second harmonic generation frequency resolved o
[期刊论文] 作者：EnwenDai,ChangheZhou,
来源：ChineseOpticsLetters 年份：2005
Frequency resolved optical gating (FROG), is an effective technique for characterizing the ultrafast laser pulses. The multi-shot second harmonic generation (SHG) FROG is the most sensitive one in different FROGs. In this paper we use this ......
[期刊论文] 作者：CaihuiDi,ChangheZhou,
来源：ChineseOpticsLetters 年份：2005
We present two novel 1*N dynamic optical couplers that are based on Dammann gratings to achieve dynamic optical coupled technology. One is presented by employing a specially designed Dammann grating that consists of the Dammann-grating area......
[期刊论文] 作者：ChangheZhou，XinZHAO，LirenLiu,
来源：黑龙江科技学院学报 年份：2003
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7...
[期刊论文] 作者：WugangCao,JianyongMa,ChangheZhou,
来源：ChineseOpticsLetters 年份：2012
An ultra broad band polarizer that operates in the telecommunication wavelength band is proposed. This device, which consists of a single suspended germanium resonant grating layer, is designed using the inverse mathematical method and the ......
[期刊论文] 作者：ChangheZhou,XinZhao,LirenLiu,
来源：光学学报 年份：2003
...
[期刊论文] 作者：YunqingLu,ChangheZhou,HongxinLuo,
来源：ChineseOpticsLetters 年份：2005
Talbot effect of a grating with different flaws is analyzed with the finite-difference time-domain (FDTD) method. The FDTD method can show the exact near-field distribution of different flaws in a high-density grating, which is impossible t......
[期刊论文] 作者：YanyanZhang,ChangheZhou,ShunquanWang,HuayiRu,
来源：ChineseOpticsLetters 年份：2005
We describe high-efficiency diffraction gratings fabricated in fused silica at the wavelength of 632.8 nm by rigorous coupled-wave analysis (RCWA). High-density holographic gratings, if the groove density falls within the range of 1575-1630......
[期刊论文] 作者：WeiWang,ChangheZhou,EnwenDai,WenjunLiu,
来源：ChineseOpticsLetters 年份：2005
Experimental investigation of Talbot self-imaging effect of an amplitude grating under illumination of femtosecond laser pulse -- the FemtoTalbot effect is reported. Theoretical analyzed results show that Talbot images under illumination of......
[期刊论文] 作者：ShunquanWang,ChangheZhou,HuayiRu,YanyanZhang,
来源：ChineseOpticsLetters 年份：2005
Inductively coupled plasma (ICP) technology is a new advanced version of dry-etching technology compared with the widely used method of reactive ion etching (RIE). Plasma processing of the ICP technology is complicated due to the mixed reac......
[期刊论文] 作者：W.K.Cheung,PeterTsang,T.C.Poon,ChangheZhou,
来源：ChineseOpticsLetters 年份：2011
Past research has demonstrated that digital Fresnel holograms can be binarized in a non-iterative manner by downsampling the source image with a grid lattice prior to the hologram generation process. The reconstructed image of a hologram th......
[期刊论文] 作者：JunjieYu,ChaofengMiao,JunWu,ChangheZhou,
来源：PhotonicsResearch 年份：2020
Perfect optical vortices (POVs) provide a solution to address the challenge induced by strong dependence of classical optical vortices on their carried topological charges. However, traditional POVs are all shaped into bright rings with a s......
[期刊论文] 作者：ChangchengXiang,ChangheZhou,WeiJia,JunWu,
来源：ChineseOpticsLetters 年份：2018
A single-groove grating for five-port TE-polarization beam splitting under normal incidence at the wavelength of 1550 nm is presented. The transmitted diffraction efficiency of the gratings is over 94.5% with uniformity better than 2%. A ph......
[期刊论文] 作者：WenjunLiu,ChangheZhou,YanyanZhang,WeiWang,
来源：ChineseOpticsLetters 年份：2005
The interference patterns produced by Gaussian-shaped broad-bandwidth femtosecond pulsed laser sources are derived. The interference pattern contains both spatial and temporal properties of laser beam. Interference intensity dependent on th......
[期刊论文] 作者：KunLiu,ChangheZhou,ShaoqingWang,ShengbinWei,XinFan,
来源：ChineseOpticsLetters 年份：2015
For manufacturing a fine optical glass lens, it is important to obtain a 3D profile of a semi-finished product with a rough surface. We develop an active binocular 3D scanning setup to measure the 3D profile of a rough surface optical eleme......
[期刊论文] 作者：XinFan,ChangheZhou,ShaoqingWang,ChaoLi,andBoquanYang,
来源：ChineseOpticsLetters 年份：2016
Face recognition technology has great prospects for practical applications. Three-dimensional (3D) human faces are becoming more and more important in consideration of the limits of two-dimensional face recognition. We propose an active bin......
[期刊论文] 作者：JunjiangHu,LeiZhang,WeiChen,ChangheZhou,LiliHu,
来源：ChineseOpticsLetters 年份：2012
Nd-doped phosphate glass is the dominant amplifier material used in solid state high average power laser systems. Surface imperfection and subsurface damage (SSD) of the glass, resulting from the optical fabrication process, limit the incre......
[期刊论文] 作者：XiaohuiSun,ChangheZhou,HuayiRu,YanyanZhang,BingkunYu,
来源：ChineseOpticsLetters 年份：2004
We report a laser writing system for fabrication of diffractive optical elements with He-Cd laser. The wavelength of the light source is 441.6 nm. The output beam is collimated into parallel light with uniform intensity distribution after p......
[期刊论文] 作者：FengZhu,JianyongMa,WeiHuang,JinWang,ChangheZhou,
来源：ChineseOpticsLetters 年份：2014
Scanning Dammann lithography (SDL) is proposed and implemented, which uses a Dammann grating to generate multiple beams with sharp step boundary for writing large-sized gratings efficiently. One of the most attractive advantages is that thi......
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