q-switching laser q 中文意思是什麼
q-switching laser q
解釋
開關激光器-
It was in this self - q - switching project that a common single mode fiber was connected to er - doped fiber in the fiber laser, in which the sbs process of single mode fiber was used to make the q modulation
本文方案為在摻鉺光纖激光器中的摻鉺光纖後接一普通通信用單模光纖，利用單模光纖的受激布里淵散射效應對光纖激光器實現自調q 。 -
Theoretical result indicated that the self - q - switching in er - doped fiber laser based on sbs process was feasible in mathematics, and the conclusion has been presented that the dynamic characteristics of output pulse by sbs are effected tinily by the length of er - doped fiber in the system
模擬實驗結果表明利用單模光纖的受激布里淵散射效應可在摻鉺光纖激光器系統內穩定形成自調q過程，同時得到sbs產生激光脈沖動態特性受到摻鉺光纖長度改變量影響不大這一結論。 -
With the theoretical and experimental methods, the characters of cr4 + : yag are studied from cr4 + : yag as passive q - switching in nd : yag laser, intracavity frequency - doubling of q - switching laser and dual - wavelength laser, which is based on cr4 + : yag ' s operations of saturable absorption and laser gaining medium. chapter 1 : introducing the cr4 + : yag ' s optical function, the general research situation and the main idea of this thesis
本論文基於cr ~ （ 4 + ） yag晶體既可以作為nd yag激光器的被動調q開關、又可以作為激光增益介質的特點，採用理論和實驗相結合的研究方法，詳細而具體的研究了cr ~ （ 4 + ） yag晶體被動調q 、調q倍頻和雙波長激光輸出的特性。 -
Laser diode pumped solid - state laser ( dpssl ) is an important branch in laser field. continuous wave and pulse operation, q - switching and mode - locking operation have been achieved for dpssl which have a lot of uses in the field of medicine, process and so on
Ld泵浦的全固態激光器（ laserdiodepumpedsolid - statelaser或dpssl ）是激光技術領域的一個重要分支，與傳統激光器相比在重量、體積、電?光轉換效率、使用壽命和穩定性方面更具優越性。 -
In this dissertation, the principle of self - q - switching fiber laser, common kinds of er - doped fiber laser and q - switching technology have been introduced and analyzed. the emphasis of the dissertation was self - q - switching er - doped fiber laser based on stimulated - brillioun - scattering ( sbs ), in which the theoretical analyze and the emulating experiment were studied in detail. the physical model of the self - q - switching process has been presented in this dissertation
本文闡述了自調q光纖激光器的原理，分析了常見的摻鉺光纖激光器及調q技術的基本原理，重點研究了利用受激布里淵散射過程進行自調q的摻鉺光纖激光器，進行了理論分析和模擬實驗研究，給出了這一過程的物理模型。 -
It has been presented in this dissertation that using model of q modulated er - glass laser, through replacing typical number of er - doped fiber and single mode fiber into the model, then the theoretical model of self - q - switching by sbs was established. by emulating experiment, the peak value of output power, repeating frequency, width of pulse have been calculated. the data was calculated repeatedly when the length of er - doped fiber changing
將摻鉺光纖和單模光纖的典型值數據代入該模型中，進行模擬實驗研究得出sbs自調q光纖激光器輸出峰值功率、脈寬、重頻等數據，並在改變摻鉺光纖長度的情況下，再次進行模擬實驗，對上述輸出結果進行了分析。 -
( 3 ) properties of yag laser q - switching by sbs were experimentally investigated, and the laser without back reflective mirror was devised, and laser pulse was obtained at repetition rate ihz and 5hz by optimizing lens focal length, length of cell and position of lens focal. point, resulting quality of pc is ideal
（ 4 ） 、實驗研究了sbs的yag激光器，設計了無後向反射鏡的sbsyag激光器。在泵浦能量17j 、重復頻率分別為1hz 、 5hz時，得到穩定輸出的能量為19mj 、脈寬為10 . 7ns 、光束質量很好的激光脈沖。 -
In this thesis, we used the q - switched nd : yag laser pulse focused by lens to pump the cr ~ ( 4 + ) : mg _ 2sio _ 4 crystal, with the pump laser pulse duration and energy of 30ns and 50 mj separately, and got the laser pulse with center wavelength, pulse duration and energy of 1. 22 m, 8. 2 ns and 10 mj on the best work condition. on the base of zhangguowei s approximation about gain - switching and the parameter of cr ~ ( 4 + ) : mg _ 2sio _ 4 crystal, we calculated the time characteristics of cr ~ ( 4 + ) : mg _ 2sio _ 4 laser pulse with rate equation by numerical method, obtained the conclusion that the laser pulse duration is only related to the pump energy and cavity length : the larger the pump energy is, the narrower the pulse duration is ; the longer the cavity is, the wider the
本論文採用調qnd : yag脈沖激光通過透鏡聚焦后縱向抽運cr ~ （ 4 + ） : mg _ 2sio _ 4晶體，抽運光脈沖寬度為30ns 、能量為50mj ，在較佳工作條件下得到了中心波長為1 . 22 m 、脈寬為8 . 2ns 、能量為10mj的激光脈沖;並在張國威分析增益開關時間特性的近似法基礎上，結合實際的cr ~ （ 4 + ） : mg _ 2sio _ 4激光器的相關參數，從速率方程出發，用數值計算的方法更為精確的模擬了cr ~ （ 4 + ） : mg _ 2sio _ 4激光器輸出激光脈沖的時間特性，得出了激光脈寬只與抽運能量、腔長有關的結論，即抽運能量愈大，脈寬越窄;腔長越長，脈寬則愈寬。
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