Howitt Korea Information Co., Ltd. was established in May 1999, located in Daejeon Metropolitan City, Korea Chang-dong Yuseong No. 59-3, Daedeok Valley Science and Technology Parks famous optical components company, specializing in the production of camera are low pass filter, infrared cut-off filters and gratings, spectroscopic and tape products such as high-tech enterprises in Korea have been successfully listed.

韓國哈威特信息株式會社成立于1999年5月，位于韓國大田廣域市儒城區(qū)長洞59-3號美日韩国产综合一区www，大德谷科技園著名的光學(xué)元器件公司，是專業(yè)生產(chǎn)攝像頭低通濾光片、紅外截止濾光片及光柵欧美精品中文字幕在线视频、分光鏡以及tape等產(chǎn)品的高科技企業(yè)，在韓國已成功上市78摸免费人成视频在线观看。

A new method of inscribing diffraction gratings by using a focused near-IR 800 nm femtosecond laser ablating gold film on glass substrate was reported.

提出了一種新的制備光柵的方法国产AAA免费黄色视频，利用800 nm的飛秒激光掃描蒸鍍在石英玻璃襯底表面的金薄膜，通過燒蝕金薄膜在襯底表面形成衍射光柵免费人成a。

He is made the offering of "kozhakkattais"(Steam cooked Rice-balls encapsulating a mix of jaggery and coconut gratings cooked in ghee).

他是提供了對" kozhakkattais "（蒸米飯球封裝的混合棕櫚糖和椰子光柵煮熟的酥油）欧美性爱精品店。

The influence of groove number of gratings and the optical thickness of the resonant reflector upon linewidth are discussed.

得到光柵照射條紋數(shù)和諧振反射器光學(xué)厚度對線寬的影響，理論和實驗符合黄色视频一、二、三区。

Results of this thesis indicate that the novel polymer DFB gratings fabricated via UV-photopolymerization can achieve high refractive index modulation and low surface relief. Since this method has obvious predominance over other fabricating methods, it is believed to have promising application future in the organic semiconductor lasers.

本論文的研究結(jié)果表明人人干人人射视频，基于紫外光聚合反應(yīng)的新型聚合物光柵可以實現(xiàn)較高的折射率調(diào)制幅度，和很低的表面起伏深度午夜福利120，相比其它有機DFB光柵的制作方法具有明顯的優(yōu)勢操东北妇女视频，因此在有機半導(dǎo)體激光器的制作中具有很好的應(yīng)用前景。

Experimental results show that the refractive index modulation can reach about 0.010; and the depth of surface relief is low to about 0.7~12.4nm, which will be lower than 1nm in the gratings with 200~400nm period(according to the first-order and second-order DFB grating period of organic semiconductor lasers).

實驗結(jié)果表明色屁屁影院www免费看国产馆，折射率調(diào)制幅度較高亚洲色图精品录音，可以達到0.010左右；表面起伏很低男女黄色网站免费，約0.7~12.4nm网站黄色在线，在周期為200~400nm(對應(yīng)于有機半導(dǎo)體激光器的一級和二級DFB光柵周期)的聚合物光柵中，表面起伏深度小于1nm一级片黄片视频。

We expect it will benefit the industry field to break through the optical measuring limits at present by offering some new ideas. Optical measuring research based on moire interferometry has developed for several decades. The main idea of this research is to utilize the moire effect caused by two superimposed gratings of identical or similar spatial frequency. One is the reference grating and it is a virtual grating created by a computer program in this research; The other grating is the image of grating projected on the measured surface by the DLP projector, and this grating will distort because of the different sloped profile of the surface. To superimpose the program-created grating and the captured distorted grating will derive the so-called moire effect. This research combined the basic theory of optical interferometry and moire effect to project the different phases of the projected grating fringes by the phase-shifting method and compute the principal value of arguments between -π,π. In the end, the phase unwrapping program based on discrete Fourier transform of solving PDEs is used to unwrap the phase of the measured surface, and finally the surface profile is derived by the optical measuring system.

以疊紋干涉術(shù)為基礎(chǔ)的光學(xué)檢測研究之發(fā)展早已行之有年国产一线天精品视频，而在本研究中所采用的投影疊紋法(Projection moiré)之主要精神在於藉由兩道空間頻率相近或相同的光柵相互疊加而成的效應(yīng)，其中一道為參考光柵日韩黄色网站AV，而本研究中的參考光柵是以程式產(chǎn)生可調(diào)整不同空間頻率的虛擬光柵农村一级黄色毛片网站；另一道則為投影至待測物表面的光柵影像，而在起伏高度不一的待測表面上的光柵影像會受到待測物表面起伏狀況不同而在觀測方向產(chǎn)生光柵投影條紋影像的歪曲變形真人交，將電腦產(chǎn)生的參考光柵與由影像擷取裝置所獲取投影於待測物表面的光柵影像作疊合国产在线一区二区三区麻豆，便會產(chǎn)生所謂的疊紋效應(yīng)久久久久精品日韩久久久；利用基本的光學(xué)干涉理論與疊紋效應(yīng)結(jié)合，本研究中以相移法來改變投影於待測表面的光柵相位日韩视频第一区，再以相移法的理論反運算出在帶有待測面各點高度資訊之介於-π欧美色中色，π相位主幅角，再以離散傅立葉轉(zhuǎn)換解偏微分方程的相位重建程式還原待測面的相位值国产另类重口调教在线，以得知待測面之表面輪廓欧美A色黄毛一片。

Based on Kogelnik's one-dimensional coupled-wave theory and dispersed Fourier transform, the diffractive characteristic of two pieces of volume phase gratings, which are cascaded and having orthogonal grating vectors for the continuous-wave laser beam, is analyzed.

利用Kogelnik一維耦合波理論，以及離散傅里葉變換欧美国产第页，分析光柵矢量相互正交日韩高清不卡福利片视频，且串聯(lián)級聯(lián)放置的兩透射型體相位光柵對空域任意分布的連續(xù)激光光束的衍射特性；討論其對入射光束的空間低通濾波性能欧美VA免费播放，并具體模擬其對畸變高斯光束空間低通濾波的效果人人摸久久国产精品。

In this thesis, the rigorous coupled wave analysis is used to simulate the overlaid gratings.

本論文是以嚴格耦合波理論來分析疊對光柵的各項參數(shù)。

A fast simulation method for sampled fiber Bragg gratings with periodic index distribution .

折射率周期分布取樣光纖Bragg光柵的快速分析方法11孩岁女精品A片男。