laser cavity 中文意思是什麼

laser cavity 解釋
激光空腔諧振器
  • laser : n 鐳射激光,受激發射光,激光;萊塞;激光器,光激射器 ( = light amplification by stimulated emis...
  • cavity : n. 1. 【解剖學】穴,窩,盂,腔,空腔;【醫學】(空)洞。2. 【物理學】模槽;氣蝕區;空腔諧振器;【原子能】(反應堆中的)小室,暗盒。
  1. Two - dichroic - mirror cavity yb3 - doped double - clad fiber laser

    雙包層光纖激光器
  2. The ring laser gyro ( rlg ) is a new photoelectric inertia sensor based on the optic interference theory. it uses the difference between the frequency of the two beams of light, which run in the opposite direction in the resonant cavity, to measure the carrier ’ s rotate speed and the orientation in the inertial space

    環形激光陀螺儀( ringlasergyro ,簡稱rlg )是以光學干涉原理為基礎發展起來的新型光電慣性敏感儀器,它利用環形諧振腔內順、逆運行的兩束光的諧振頻率差來測量載體對于慣性空間的轉速和方位。
  3. Laser fusion cavity

    激光聚變腔
  4. According to the guidline, two nd : yag lasers have been designed and set up, one is end - pumped by lower output power ld using a selfoc micro lens, and the other is end - pumped by high output power ld using a pair of lenses are designed, and the characteristics such as output power and power stabilization of both solid - state lasers are investigated. thirdly, when an empty liquid crystal cell is inserted in the cavity of the nd : yag laser pumped by high power ld, the laser can operates in single axial mode. finally, according to the relationship between the laser output power and the longnitudinal a ld - end - pumped nd : yag laser sensor for displacement measurement has been investigated theoretically and demonstrated experimently, the results indicate that when the mean radius of pumping inside the laser cavity is far less than that of the oscilating laser mode, the exponential of the output power is a gauss function of the longitudinal positon of focused spot of ld pumping beam, both the measurement range and the sensitivity are dependent on the incident pumping power, as the incident pumping power is increased, the measurement range is enlarged and the sensitivity is improve d

    本文首先介紹了ld泵浦nd : yag激光器的發展狀況、主要特性及其應用,從四能級速率方程出發,推導了ld泵浦nd : yag激光器的閾值、輸出功率和斜效率的表達式,並簡述了激光器的工作原理、結構型式和倍頻方法;其次,以空間相關的速率方程為基礎,提出了ld端面泵浦nd : yag激光器的設計方法,給出了一定泵浦耦合方式下,振蕩光模尺寸、最佳輸出耦合率、泵浦光模尺寸、泵浦光焦斑位置等參數的選取依據,以此為依據,設計了自聚焦透鏡耦合小功率ld泵浦nd : yag激光器和透鏡組耦合高功率ld泵浦nd : yag激光器,對激光器的輸出功率和功率穩定性等特性進行了實驗研究;再次,在帶尾纖輸出的高功率ld泵浦nd : yag激光腔內插入一隻空液晶盒,觀察到了激光器以單縱模運轉;最後,根據泵浦光焦斑端面位置對激光輸出功率的影響規律,提出了ld端面泵浦nd : yag激光位移傳感新方法,並進行了理論和實驗研究,研究結果表明:當激光晶體內泵浦光平均光斑半徑遠小於振西安理工大學碩士學位論文蕩光束腰半徑時,激光輸出功率的自然指數與泵浦光焦斑的縱向位置成高斯變化規律,測量范圍和靈敏度依賴于泵浦功率,隨著泵浦功率的增加,測量范圍擴大,靈敏度提高,當端面泵浦功率為7 . 24w (最大輸出功率為1 . 926w )時,激光位移傳感器的測量范圍和靈敏度分別是13 . 045mm和0 . 148mw / pm 。
  5. We firstly summarize the development of yb - doped fiber lasers, pumping methods and the applications of high - power fiber lasers. 2. considering the scattering loss, we deduce the relationships between laser performances of yb - doped double - clad fiber laser and parameters of laser cavity from the steady state rate equations, numerically analysis the changes of laser performances, such as laser power with the parameters of laser cavity, including output mirror reflectivity, optimum length of double clad fiber

    研究主要內容包括如下幾個方面:一、首先對摻鐿光纖及摻鐿光纖激光器的發展狀況、包層泵浦技術和高功率光纖激光器的應用等進行了綜述;二、在前人對高功率雙包層光纖激光器的理論基礎上,在考慮了光纖散射損耗因子的情況對光纖激光器理論進行了推導,給出了準解析解,進一步完善了理論分析。
  6. Stray light inside multi - pass laser cavity of the sg - iii prototype module

    多通放大器腔內雜散光
  7. Cylindrical laser cavity

    圓柱形激光諧振腔
  8. This paper studies the diffuser ' s influence on the fadw ' s running properties experimentally including the inner wall and outer wall of diffuser and the backpressure of the diffuser. to prevent the gas of fadw from leaking into the laser cavity because of the effect of layer and turbulence the leak - proof flakes are designed. first the method of the leak - proof flake design is studied and then its influence on the properties of fadw is studied experimentally

    實驗研究了擴壓器對fadw工作性能的影響,提出了擴壓器結構和超音速噴管相對布局參考數據;研究了氣動窗口側壁防漏片的結構對氣動窗口性能的影響,並給出其工程設計方法;同時還研究了擴壓器不同的背壓對整個fadw作性能的影響,據此提出了擴壓器與引射器結合的設計方案,從而為大壓比、高性能的fadw的設計提供了進一步設計參考方法。
  9. The laser give out 10. 7mw green light, pumped 900mw. we observed it for 40 hours, the noise of green power is lower than 1 %. we optimized the laser cavity later

    激光器工作在相互平行的多縱模模式下,在900mw的泵浦輸入功率下得到倍頻光功率為10 . 7mw , 40小時連續輸出光功率噪聲1 。
  10. Selective absorption of electromagnetic wave. adw employing gases which do n ' t absorb the laser energy can form a gas urtain " whose pressure of the two sides is equal to the low pressure of laser cavity and the ambient circumstance pressure respectively so it can isolate the higher pressure ambient air from entrancing into the laser cavity and maintain the hel ' s running normally

    氣動窗口利用對激光器輸出波長沒有任何吸收作用的特殊氣體作為窗口工作介質,並根據氣體動力學部分相關原理,能生成一個具有與激光腔低壓和環境大氣高壓相匹配的壓力梯度、並把激光器低壓工作介質和外界大氣相隔離的「氣幕」 ,從而保證高能激光器的正常工作。
  11. The analyses given in this paper to quasi - three - level for 946 nm laser are complete. the relation between 946 nm laser transmission and optimal crystal length has been derived from the rate equations describing the population inversion and the photon density in the laser cavity in the steady - state case. the minimal claims to coating have been given on the base of contrasting 946 nm transmission with 1064 nm transmission in the condition of different cavity losses and how the pump beam radius in the laser crystal and optimal crystal length affect the laser threshold and output power of 946 nm laser has been given as well

    對產生946nm譜線的準三能級結構給出了較為完整的分析,利用激光諧振腔處于穩態時的速率方程,導出了準三能級nd : yag946nm起振時,透射損耗與最佳激光晶體長度的關系,在與1064nm透射損耗相比較的基礎上,給出了不同的腔損耗情況下的最低鍍膜要求,並且給出了激光閾值、輸出功率和最佳激光晶體長度及泵光光斑大小的關系,這為設計室溫下高效運轉的946nm激光器的提供了理論基礎,這種分析方法對研究此類低增益,準三能級或三能級激光系統輸出特性有借鑒意義。
  12. When a portion of light emitted from a laser source is reflected or scattered back into the laser cavity by an external target, the reflected light will mix with the light inside the cavity, causing a modulation of the laser output power

    激光自混合效應是指激光器輸出的光被外部物體反射或散射后,其中一部分光又反饋回激光器的諧振腔,反饋光攜帶了外部物體的信息。與腔內光相混合后,會調制激光器的輸出,稱為自混合效應。
  13. The frequency of the slave laser is not locked to the master laser when the polarization direction of the injected laser is perpendicular to the polarization direction of the slave laser which is free - running. the slave laser frequency shifts toward low frequency because of thermal effect in the slave laser cavity induced by the injected laser

    當注入光偏振方向與從激光器輸出光偏振方向垂直時,從激光器頻率不會被鎖定到主激光器頻率上,但由於外部光注入引起的從激光器腔內熱效應,使得從激光器頻率向低頻方向移動。
  14. Based on the rate - equation theory of four - level system, the expressions of threshold pump power, output power and slope efficiency are given. the influence of space distribution of pump light ( the position of focusing point, dimension of pumping light and divergence angle ) to the output characteristics are also discussed. then, by investigating the effects of thermal effect of laser crystal on the size of laser cavity mode, we obtain the mode - matching principle of high power laser diode end - pumped solid - state lasers

    其中,在泵浦光的空間分佈變量中我們分別考慮了泵浦光聚焦后的腰斑大小、聚焦腰斑在增益介質中的位置以及泵浦光在介質中發散角的影響;然後我們研究了在高泵浦功率下激光晶體因吸收泵浦光而產生的熱效應所導致的熱透鏡效應以及熱致衍射損耗,通過分析它們對振蕩激光腔模尺寸的影響,得到了高功率半導體激光二極體端面泵浦固體激光器模式匹配的要求,為高功率連續單頻nd : yvo _ 4激光器的優化設計提供了理論依據。
  15. First, some principle that should be considered in building a laser cavity was discussed based on the rate equation of four - level laser model. then, the thermal lens effect of nd : yvo4 crystal was analyzed and estimated theoretically. the laser cavity was designed by considering the thermal lens effect and the optimal transmission was estimated

    首先在理論上通過四能級激光器速率方程,討論了激光器設計上需要注意的一些原則,然後分析了nd : yvo _ 4晶體的熱透鏡效應,理論上估算了其熱焦距的大小,並且在腔型設計中給予了考慮。
  16. Chapter three, optimal designing of high power single - frequency nd : yvo4 laser cavity

    第三章:高功率單頻nd : yvo _ 4激光器諧振腔的設計。
  17. According to the above theoretical analysis, a high power single - frequency nd : yvo4 laser cavity is designed

    在本章中,根據理論分析的結果設計了高功率單頻nd : yvo _ 4激光器的諧振腔。
  18. In this part, the development and prospect of laser diode end pumped solid - stats laser is briefly introduced chapter two : design and optimization of the laser cavity

    對激光二極體端面泵浦的固體激光器目前的發展做一簡單介紹。第二部分,腔型設計與優化。
  19. 2. considering the energy level structure and the spectrum characteristics of yb3 + ion, we deduce the relationships between laser performances of yb3 + - doped double clad fiber laser and parameters of laser cavity from the steady state rate equations with a new model

    2 .討論了yb3 +離子的能級結構和光譜特性,並從穩態速率方程,結合諧振腔結構特點採用ido kelson和amos hardy的模型,給出了雙包層光纖激光器的輸出特性與激光器諧振腔結構參數的關系準解析表達式。
  20. Three parts ( 6 chapters ) are included in this dissertation except the 1 st and 6th chapters. the first part ( the 2nd, 3rd and 4th chapters ) is the theory for analyzing and designing resonators with diffraction optical elements by use of a matrix eigenvalue method. the eigen modes and diffraction loss for a laser cavity have been obtained by this method

    本論文主要包括三個部分共八章,除第一章緒論和第八章總結外,主要內容如下:第一部分(第二、三、四章)主要討論和分析了決定激光光束的輸出特性和光束參量的激光諧振腔,闡述和建立了矩陣本徵值方法分析和設計激光諧振腔的系統理論。
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