laser threshold 中文意思是什麼
laser threshold
解釋
激光閾值-
Test method for normal pulse lasing threshold and slope efficiency of nd : yag laser rods
摻釹釔鋁石榴石激光棒長脈沖激光閾值及斜率效率的測量方法 -
Test method for continuous lasing threshold, slope efficiency and output power of nd : yag laser rods
摻釹釔鋁石榴石激光棒連續激光閾值斜率效率和輸出功率的測量方法 -
The high - power semiconductor quantum well ( qw ) laser is a kind of luminescence device with superior performance, it has longe - lived, low threshold current density, high efficiency, high luminosity and excellent monochromatic, coherence, directionality, etc. the high - power semiconductor laser is widely applied to the fields, such as military, industrial machining, communication, information processing, medical treatment, etc. the material ' s epitaxy is the foundation of the whole laser ' s fabricating, and it has important influence on the optics and electricity performance about the laser
大功率半導體量子阱激光器是一種性能優越的發光器件，具有壽命長、閾值電流密度低、效率高、亮度高以及良好的單色性、相干性、方向性等特點，廣泛應用於軍事、工業加工、通信及信息處理、醫療保健等領域。材料的外延生長是整個激光器器件製作的基礎，對器件的光學和電學性能有著重要的影響，生長不出優質的材料體系，獲得高性能的器件就無從談起，因此，材料的外延生長便成為了整個半導體激光器製作過程之中的重中之重。 -
Accoding to experiment, found that trepanning can obtain the holes of little taper, high roundness, using laser drilling of nearby the last energy threshold gained the holes of high quality
最終得出:在工件上打大孔徑的孔時，採用旋切打孔的方法可以得到了圓度高、錐度小的孔質量。 -
This paper summarized several main research methods on this topic in our country, including " the determinant of laser - induced - damage of thin film by the scan of transmission and reflectance method ", " study of the phenomena on laser - induced thin film damage by photo - acoustic method " and " the measurement of damage threshold on optical thin film by diffusion method ", etc
本文總結了目前國內幾種主要的研究方法，包括用透射反射掃描法檢測光學薄膜的激光損傷，用光聲法測定光學薄膜的破壞閾值，以及用散射法來測量光學薄膜的損傷閾值等。 -
The effects of air ' s absorption of heat, scatter, turbulent and thermal blooming on the laser beam transmitting under the air breakdown threshold value are analysed when laser transmit in the air and the result can be used designing of the laser system
摘要系統分析了激光在大氣中傳輸時在擊穿閾值以內，由於大氣汽溶膠的吸收、散射、大氣湍流、大氣熱暈等線性非線性問題對光束控制系統的影響，為激光系統提供指導。 -
In this thesis, we demonstrate the study of si - based light emitting materials and its importance in si - based photonics integration. we discussed mainly the gain, differential gain, threshold current of si - based quantum - dot laser and the dependence of threshold current on temperature from discrete energy level of three - dimension confined quantum - dot and state density distribution of 5 - function
本文闡述了si基光發射材料的研究進展及它在硅基光電子集成中的重要地位，從三維受限量子點的分立能級和函數狀的態密度分佈入手，著重討論了si基量子點激光器的增益、微分增益、閾值電流及閾值電流的溫度特性。 -
The laser damage threshold of the ybyp _ xv _ ( 1 - x ) o _ 4determined by nd : yag laser, which showed a decreasing tendency with the increase of the dopant concentration
利用nd : yag激光器測試晶體的激光損傷閾值，隨著摻雜離子濃度的增大，激光損傷光功率密度呈減小趨勢。 -
Abstract : in view of the crystal structure, this paper repo rts thecharacter of single crystal growth of germanate and the properties as me dium of laser crystal. the study and progress in germanate crystals used as widel y tunable laser crystal, self - doubling - frequency crystal and highly efficient and low pumping threshold laser crystal are introduced
文摘:從晶體結構上分析了鍺酸鹽的單晶生長和作為激光晶體基質的特點，並介紹了鍺酸鹽作為可調諧激光晶體，自倍頻晶體，高轉換效率和低泵浦閾值的激光晶體的研究及進展。 -
At first, bubble flow image is acquired using laser and incandescence lamp respectively as light source and using ccd. according to different optics - dispersion character, threshold segmentation method is proposed to identify gas from the gas - water flow, which make steadfast base for further calculate void fraction. the precision of threshold directly affect the calculate precision of void fraction
文中分別採用激光片光源和影視燈照明，採用逐行掃描數字ccd攝像機獲取氣泡的流動圖像；根據氣泡和水對光的反射特性不同，提出採用閾值法識別圖像中的氣泡和水，從而為進一步計算摻氣濃度打下堅實的基礎。 -
Lasers and laser - related equipment - determination of laser - induced damage threshold of optical surfaces - s - on - 1 test
激光和激光相關設備.光表面激光導至損傷閾值的測定. s - on - 1試驗 -
Because of their fine extinction ratio and high anti - light - damage threshold value, laser - polarizing prisms are popular among workers in science and technology field
激光偏光棱鏡，以其優良的消光比性能和高抗光損傷閾值性能，倍受科技工作者歡迎。 -
Finally, the optical quality of ( nd3 +, yb3 + ) : yp0. 1v0. 9o4 crystals including the optical uniformity, the optical damage threshold and the laser performance was tested and identified
並對晶體的光學質量進行品質鑒定，測試了其光學均勻性、光損傷閾值和激光性能。 -
By using laser machining device, laser cleaning experiments of gold _ plating thin film on optical glass surface have been studied, laser cleaning threshold and damage threshold of gold _ plating thin film have been obtained
利用激光加工機對光學玻璃表面的鍍金薄膜進行了激光清洗試驗，獲得了鍍金薄膜的激光清洗閾值和損傷閾值。 -
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。 -
The character of fiber laser spectrum is measured by optical spectrum analyzer. the experiment approves the relationship of loss, threshold and lasing wavelength, which is that the higher loss, the higher threshold, and the shorter lasing wavelength
我們用光譜儀測量了激光光譜特性，實驗研究了腔損耗及閾值和激射波長的關系，即損耗越大閾值越高，激射波長越短。 -
As the injection current is increased above the threshold value (10. 7-24), the laser oscillation intensity builds up.
當注入電流增加到由式（107-24）表示的閾值以上時，激光振蕩強度就會增長。 -
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。 -
The rate equation formalism is used to develop the concepts of laser threshold, population inversion and modulation response
比例方程式形式用來生成雷射臨界點、能態數反轉與調變反應的概念。 -
The laser threshold decreases from 4. 7w ( without external cavity ) to 3. 6w ( with external cavity ). with the cavity of output from zero - order diffractive beam applying to solid - state pyrromethene 567 ( p567 ), tunable range of about 70nm from 543 - 610nm, the largest range reported as we know, had been achieved. and the highest slope efficiency of 17. 2 % was obtained at 583nm wavelength
在使用光柵一級反饋、零級輸出可調諧腔的可調諧實驗中，得到了調諧范圍近70nm （ 543 610nm ）的激光輸出，此結果在已知報道的激光調諧范圍中是最寬的，輸出波長為583nm時得到最高斜效率17 . 2 。
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