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- Optical limiting by using thermal self defocusing[J]. 引用該論文 司金海;劉樹(shù)田;楊淼;楊昆;李淳飛.
- The recipe design,melting and ion exchange process for the defocusing and focusing GRIN fiber lens glasses is studied. 本文對發(fā)散型和聚焦型兩種纖維透鏡玻璃的配方設計、熔制以及離子交換工藝進(jìn)行了研究。
- Photolithographic Fabrication Techniques by Using Defocusing Laser Direct Writing[J]. 引用該論文 李鳳友;盧振武;謝永軍;張殿文;裴蘇;趙晶麗.
- Based on the ABCD matrix and Gaussian beam propagation theory, the Gaussian beam transforming formulas through a parabolic defocusing GRIN fiber lens are derived. 本文根據ABCD矩陣和高斯光束傳播理論,導出高斯激光束經(jīng)拋物型發(fā)散梯度折射率纖維透鏡的變換公式。
- Analyzed is the dependence of the defocusing quantity on the hologram size and the spatial frequency bandwidth of the object. 分析了全息圖尺寸及其記錄的空間頻帶寬度與離焦量的關(guān)系;
- The experiments of measuring convergent beam wavefront with a quadratic grating are carried out.It is found that the defocusing aberration... 由于大功率激光束的不穩定性,其波前變化非?？?所以該方法的實(shí)時(shí)性非常適合于這種波前變化的測量。
- Simulation results show phase-diversity method can accurately retrieve the wavefront and defocusing of one wavelength is optimal. 模擬研究結果表明，相位差法可以較準確的恢復出波前相位，并且最優(yōu)化的離焦波面差為一個(gè)波長(cháng)。
- Both the power control model and linewidth model of the proposed method are established with defocusing amount as the unique variable. 推導了穩定線(xiàn)寬后的光功率控制模型和線(xiàn)寬模型,模型中的變量?jì)H為離焦量,降低了光功率控制的復雜性。
- The primary factors affected welding depth and width have been studied, for example: welding power、speed、defocusing parameter and flow parameter. 進(jìn)行了厚鋼板和汽車(chē)齒輪的激光焊接實(shí)驗,實(shí)際測量了激光功率、焊接速度、離焦量、輔助氣體等工藝參數對焊接質(zhì)量的影響。
- The linear focusing effect and linear defocusing effect on the interaction between spatial solitons have been studied by numerical simulation. 結果表明,線(xiàn)形聚焦效應增強了空間孤子之間的相互作用;
- The present research mainly focuses on detecting the processing stability,assembly quality,defocusing,weld penetration,weld shape,pool and keyhole,etc. 目前實(shí)時(shí)檢測的內容主要有焊接過(guò)程的穩定性、裝配質(zhì)量、離焦量、焊縫熔深和表面形貌、熔池與小孔的形態(tài)等。
- The positions for focusing foci and defocusing foci can be exchanged by turning on or off the coding state of spatial light modulator. 開(kāi)關(guān)SLM的編碼態(tài)，聚焦點(diǎn)和散焦點(diǎn)的位置交換。
- The effects of lighting wavelength, coherent coefficient, aperture number and defocusing to image quality can be studied with this method. 用于研究照明波長(cháng)、相干系數、數值孔徑及離焦等對成象質(zhì)量的影響。
- Important applications of isotropic nonlinear materials are seen in self-focusing, defocusing phenomena, switching systems, etc. 各向同性非線(xiàn)性材料的重要應用包括自聚焦和散焦現象、開(kāi)關(guān)系統等。
- Abstract The El mass sprctra of organophosphorus compounds containing tyraminyl radical were studied by means of high resolution and metastable defocusing MS technique. 摘要 本文在亞穩態(tài)測定和高分辨精確質(zhì)量計算的基礎上,研究了二類(lèi)酪胺基有機磷化合物的質(zhì)譜裂解規律。
- Dual waveband signals in high power laser welding were recorded and analyzed, especially, the law between the signals magnitude and the defocusing was discussed. 記錄和分析了高功率激光焊接中工作區的紫外和紅外信號，著(zhù)重分析了雙波段信號與離焦量變化的對應規律。
- At the same time, the popular culture appearing with the course of modernization exerts the strategies such as conversion focalizing and defocusing etc. to solve the crisis. 同時(shí)隨現代化進(jìn)程而出現的大眾文化運用“轉換”、“聚焦”、“散焦”等策略展開(kāi)了對于時(shí)間危機的拯救。
- Research results show that the incline and defocusing of reflection plane in optical instrument (such as telescope and camera) reduce the intensity of the "Cat"s eye" reflection. 研究結果表明:回波強度受光學(xué)儀器內部反射面傾斜和離焦及光學(xué)鏡頭相對孔徑的影響較大,掃描光束的入射角和物鏡相對孔徑等因素對回波強度也有一定影響。
- By means of a Reyleigh-Ritz optimization procedure, the closed form solutions for the evolution of beams in both defocusing and self-focusing cases can be obtained. 運用瑞利-里茲方法求解其變分方程，分別求出光束在自散焦和自聚焦介質(zhì)中的變分解。
- The studied results showed that,it is direct proportion to laser power,inverse proportion to welding speed and exponential proportion of 4 orders to defocusing distance. 焊接體能量與激光功率成正比、與焊接速度成反比、與離焦量成四階指數關(guān)系,與焦點(diǎn)尺寸成平方關(guān)系。
