激光選通 的英文怎麼說

中文拼音 [jīguāngxuǎntōng]
激光選通 英文
laser-gated
  • 激 : Ⅰ動詞1 （水因受到阻礙或震蕩而向上涌） swash; surge; dash 2 （冷水突然刺激身體使得病） fall ill fr...
  • 光 : Ⅰ名詞1 （照耀在物體上、使人能看見物體的一種物質） light; ray 2 （景物） scenery 3 （光彩; 榮譽） ...
  • 選 : Ⅰ動詞1. （挑選） select; choose; pick 2. （選舉） elect Ⅱ名詞（挑選出來編在一起的作品） selections; anthology
  • 通 : 通量詞（用於動作）
  • 激光 : [物理學] laser 激光靶 laser target; 激光報警器 laser avoidance device; 激光玻璃纖維 laser fibre; ...
  1. If the velocity of atoms is near to zero, the light for ces will tend to confine the atoms near to nodes and antinodes. the stability depends on the magnitude of the negative slope of the light force, the depth of the potential well and the momentum diffusion coefficient. it is important to select the parameters, e. g

    如果通過激光冷卻能使原子速度降至很小甚至為零，光壓力的作用將使原子被較穩定地囚禁于激光駐波場的節點和反節點處，其穩定程度取決于該處光壓力曲線負斜率的大小、對應勢能的勢阱深度以及動量擴散系數的大小，因此，如何在實驗中合理選擇激光強度、失諧量等顯得尤為關鍵。
  2. The stability output second harmonic generation ( shg ) experiment results of single - longitudinal mode and multi - longitudinal mode with long cavity were explained reasonably with these rate equations. the high polarization of fundamental wave in the isotropic laser media nd : yag with type - i critical phase - matching lbo was studied with the rate equations including polarization of fundamental light. using the polarization function of lbo, a quartz full - wave plate was introduced into the cavity, a kind of birefringent filter by considering the combination of the polarization function of the type - i critical phase - matching doubling frequency crystal lbo and the quartz whole - wave plate was constructed

    將腔內多縱模倍頻速率方程推廣應用到準三能級藍光激光器中，分析了一個縱模、兩個縱模、多個縱模時的噪聲情況，合理地解釋了實驗中激光器單縱模運轉以及長腔多縱模運轉時穩定輸出的實驗現象，同時利用該速率方程分析了以各向同性激光晶體nd : yag為工作物質，類臨界相位匹配lbo為倍頻晶體的藍光激光器中基頻光偏振特性，合理利用類臨界相位匹配lbo倍頻晶體的偏振特性與引入的石英晶體全波片構成雙折射濾光片，通過選單頻來抑制噪聲，獲得了藍光低噪聲的穩定輸出。
  3. In order to increase the output power, reliability and stabilization, microchannel heatsink which is one of active heatsinks is used to cool high power semiconductor diode laser arrays in the paper

    為了提高激光器的輸出功率、可靠性和穩定性，本論文選取有源熱沉? ?微通道熱沉來冷卻大功率半導體激光器列陣。
  4. Finally, with regression analysis on the simulation results, a regression model is made and the optimal process parameters of laser bonding are found

    然後通過漏選試驗確定影響激光鍵合的主要工藝參數有激光功率、激光掃描速度及鍵合初始溫度。
  5. At present, people usually use birefrigence and quasi - phase - matching methods to achieve higher effiency in the process of conversion. a significant advantage of quasi - phase - matching method is that the interaction is occurred through the largest element of the x ( 2 ) tensor ; the period of optical superlattice can be designed randomly, and any interaction can be matched without walk - off angle ; they are fitted to be used in frequency conversion of lower power especially. the quasi - phase - matching method has some advantages over birefrigence method, improving the efficiency of frequency conversion ; the range of frequency conversion covers its whole transperant wavelength

    由於準相位匹配技術有其獨特的優勢，可以利用非線性光學晶體的最大二階極化張量，如ppln 、 pplt 、 ppktp用的非線性極化張量都是d _ （ 33 ） ，其有效非線性系數高出普通非線性光學介質（如bbo 、 lbo 、 ktp ）一個數量級，而且可以人為靈活設計調制周期，通過周期設計其頻率變換范圍可以覆蓋準相位匹配介質的整個透明波段，選擇無走離效應，解決了常規pm難以解決的問題，拓寬了非線性晶體的應用范圍，極大地提高了頻率轉換效率，已成為非線性光學材料和固體激光器的研究熱點之一。
  6. At first, modeling of these divvies by rate equations to obtain expressions for threshold and slope efficiency is given. on the case of this theory, the large numbers of literatures and datum are consulted, and the laser is home studied. through rationally selecting and improving the reflector surface, ensuring the beam quality, increasing farthest the absorption path, and improving effective pumping frequency ; through designing the water cooler of yag bar, the volume of laser is half the same internal and international production, and the output power is get to the extremum of the same international production

    並在此基礎上查閱了大量文獻和資料，對該種激光器進行了深入的研究，通過對yag棒直徑的合理選取併合理地改進反射鏡面，從而既保證了光束質量又最大限度的增加了吸收長度，有效的提高了泵浦效率；在不影響泵浦的前提下，通過有效縮短yag棒的長度減小輸出損耗；對yag棒的水冷系統進行優化結構設計，使激光器體積減小到國外同類產品體積的一半，而輸出功率已達到國外同類產品的極限值。
  7. The analysis of wavelength selection for space - to - ground laser communication

    空-地激光通信鏈路波長選擇因素分析
  8. The researching work include three aspects : 1 ) after selecting primary material system, the polymer coating process were optimized. the polymer - coated high - temperature alloy powder has been developed on the basis. 2 ) based on sintering and orthogonal experiments, the influence of the prototyping elements on prototyping properties have been initially studied, and the optimal prototyping parameters of this material has been obtained finally

    本文主要研究內容為： （ 1 ）選擇合適的包覆材料體系，對鉬粉的包覆工藝進行了優化實驗，在此基礎上開發了適合於激光燒結成型用覆膜高溫合金粉末材料； （ 2 ）通過激光燒結成型實驗，運用正交實驗方法，系統地研究了燒結工藝參數對成型質量的影響關系，在此基礎上確定了覆膜高溫合金粉末最佳燒結成型工藝參數； （ 3 ）對激光成型件進行了后處理工藝實驗，得到了優化的后處理工藝規程，並製作了合格的后處理樣件。
  9. In order to better detect the image edge information, firstly, non ? linear median filter technology of characteristic direction was applied to filter out the gauss noise ; secondly, ( 3, 1 ) biorthogonal spline wavelet was used as the primitive wavelet filter, adopting lifting scheme to build the most superior biorthogonal wavelet filter, and applying the superior biorthogonal wavelet to the multiresolution wavelet edge detection ; at the same time, floating threshold was defined and applied to the image edge detection, and the image edge position was located accurately

    在激光探測系統中，微弱的回波圖像淹沒在強背景噪聲中，為更好地檢測這類含噪圖像的邊緣信息，首先應用特徵方向非線性中值濾波技術，濾去高斯噪聲；其次，選擇（ 3 ， 1 ）雙正交樣條小波作為原始小波濾波器，採用提升方案構造最優雙正交小波濾波器，應用構造的雙正交小波進行多尺度小波邊緣檢測；同時，通過定義浮動閾值，並應用於圖像邊緣檢測，較準確地定位了邊緣位置。
  10. In order to better detect the image edge information, firstly, non - linear median filter technology of characteristic direction was applied to filter out the gauss noise ; secondly, ( 3, 1 ) biorthogonal spline wavelet was used as the primitive wavelet filter, adopting lifting scheme to build the most superior biorthogonal wavelet filters and applying the superior biorthogonal wavelet to the multiresolution wavelet edge detection ; at the same time, floating threshold was defined and applied to the image edge detection, and the image edge position was located accurately

    在激光探測系統中，微弱的回波圖像淹沒在強背景噪聲中，為更好地檢測這類含噪圖像的邊緣信息，首先應用特徵方向非線性中值濾波技術，濾去高斯噪聲；其次，選擇（ 3 ， 1 ）雙正交樣條小波作為原始小波濾波器，採用提升方案構造最優雙正交小波濾波器，應用構造的雙正交小波進行多尺度小波邊緣檢測；同時，通過定義浮動閾值，並應用於圖像邊緣檢測，較準確地定位了邊緣位置。
  11. Ccd ), light signals from the object is covered by relay scattering when laser beam penetrates through the atmosphere. so the technique of range gate has been used in such system

    當激光通過大氣時，瑞利散射將使得ccd器件接收到的目標回波信號淹沒在噪聲信號之中，因此系統中採用了距離選通技術。
  12. In chapter 3, we studied the effect of gaussian transverse profile for the driving and laser fields on lasing without population inversion ( lwi ) in a closed v - type system and an open v - type system. moreover, we discussed also the effect of the unsaturated gain coefficient, the cavity - damping rate, the ratio of the atomic injection rates and atomic exit rate on the corresponding systems. in chapter 4, we mainly discussed the effect of doppler broadening on the gain, dispersion and the frequency up - conversion of the open v - type lwi system and compared the differences and the same between the open system and the corresponding closed system

    發現： （ 1 ）在考慮doppler展寬的情況下，通過選取合適的實驗室條件（比如合適的原子環境溫度等）可得到合適doppler展寬值，從而使系統獲得最佳增益； （ 2 ）要想實現系統的頻率上轉換，同時又要獲得足夠強的無反轉激光增益，則系統頻率轉換比不能選取的太大； （ 3 ）對于開放系統，比較小的粒子注入速率比與退出速率對產生無反轉激光是有利碩士學位論文摘要的： （ 4 ）由於dopp1oy展寬的存在，當探測場與驅動場的傳播方向相反時，增益在探測場失諧的某一段區域產生振蕩，且振蕩的振幅、頻率失諧范圍的大小與dopper展寬的取值有關。
  13. In the paper, we expound the total structure design of the measuring instrument, the choose of optics principium, the special optical system which consist of f lens, the design of servo control systemic, and the software and hardware design of light - to - current inversion and control of the servo, and the design of sqc statistical quality control and supervisory system. at last, the accurate of laser beam on - line measuring instrument has been analyzed

    本論文完成了檢測儀的總體方案設計，儀器工作原理的選擇，由f透鏡構成的特殊光學系統的確定，伺服機構和伺服控制系統的設計，光電變換及通訊系統的軟、硬體設計， sqc統計質量控制與管理系統的設計，最後對激光在線掃描檢測系統的精度進行了綜合分析。
  14. Based on the result of widely investigating and collecting data, we compared measure - distance laser sensor to measure - distance microwave sensor, in order to choose the right measure - distance with low price sensor which could work well in rain, fog and snow days. in the end, we choose bj - 1 measure - distance laser sensor, which was produced by the second electron and instrument factory in changzhou

    論文階段主要研究內容及取得階段性成果如下： 1 、通過廣泛調研、查詢資料，對激光測距傳感器與微波測距傳感器進行比較，選擇適合在雨、雪、霧等天氣下能滿足系統工作需要並具有優良性價比的測距傳感器。最終選擇了常州第二電子儀器廠的bj ? 1型激光測距傳感器。
  15. We find that there usually exist peaks in the electric derivative curve and optic derivative curve of high power semiconductor laser, these two kinds of peaks are related properly, the peaks with reliability of device. while the peaks with relation with the reliability of device, while the peaks with same direction are usually related to the inner defects, same directin are usually related to the inner defects, carrier leakage and current leakage, so, the device with same direction peaks is usually unreliable one

    （ 2 ） m 、 h值大， b值小的器件是質量和可靠性不好的器件（ 3 ）導數曲線上的峰與光導數曲線上的峰相對應，反向峰通常與器件的可靠性無關，而同向峰的存在於器件的質量和可靠性密切相關，有同向峰的器件通常是質量不好的器件，這類器件老化后特性明顯變差，這意味著導數曲線上的同向峰可以作為高功率半導體激光器可靠性篩選的一個輔助判據。
  16. A normal co - axis he - ne laser tube with bore length l = 190 mm was used. with pid and self - organised fuzzy control, the frequency error could be confined to a 10 ~ 9 level. in addition, preheating time and anti - interference were within requirements

    選用腔長l = 190mm的普通同軸式he一e激光管，採用pid和自組織模糊控制模式可達到10一的穩頻精度效果，並滿足預熱時間和抗干擾要求。
  17. The equivalent cavity model is used to deduce the threshold condition of the ecld, and the expression of the threshold carrier density n ( v ) when ecld is tuned to oscillate at different frequencies has been obtained. using the expression of n ( v ) and the carrier dependent refractive index, the simple basic equation describing the bistable characteristics has been derived after choosing an appropriate reference frequency nf

    通過建立等效腔模型來推導外腔半導體激光器的閾值條件，得到ecld在不同頻率v振蕩所需的閾值載流子密度n （ v ）表達式，利用該表達式及相關的折射率表達式，在選擇合適的參考載流子密度n _ f后，導出了一個描述雙穩所需的基本方程。
  18. It is a good candidate for the high quality photoelectronic and microelectronic devices, such as fiber optical communication lasers, photoelectronic detectors, high electron mobility transistors and electro - optic modulators

    它是制備性能優良的光電子與微電子器件，如光纖通訊激光器、光電探測器、高電子遷移率晶體管、電光調制器等的主要選擇對象之一。
  19. When the sample is irradiated with the laser light of appropriate wavelength, the azo molecules undergo reversible photoinduced anisotropy from trans form to cis form

    通過選擇合適的激光照射樣品，偶氮染料分子結構發生了從反式到順式的可逆分子異構現象。
  20. The lifetime of particles co - doped with li + and na + increased as compared to that of un - doped one. however, the lifetime decreased as co - doped with other dopants. in addition, we also studied that ultraviolet ( uv ) light - induced spectral change in eu3 + - doped aluminosilicate glass and red to blue up - conversion emission of tm3 + -, yb3 + - doped y2o3 nanocrystals

    （ 2 ）在紫外光輻照下， eu ~ （ 3 + ）摻雜的氧化物玻璃電荷遷移帶強度降低，通過研究輻照與激光的功率密度、波長的關系，發現這種變化屬于單光子過程，並具有頻率選擇性。
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