laser power density 中文意思是什麼

laser power density 解釋
激光功率密度
  • 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...
  • power : n 1 力，力量；能力；體力，精力；（生理）機能；〈常 pl 〉才能。2 勢力，權力，權限；威力；政權；權...
  • density : n. 1. 稠密；濃厚。2. 【物理學】濃度；密度；比重。3. 愚鈍，昏庸。
  1. The feasibility and some advantages of employment of sil have been discussed. the numerical aperture are calculated when laser pulse is defocusing. in contrast with traditional microscopy objective, the employment of solid immersion lens can effectively increase the numerical aperture of the recording system ; thereby it can increase the volumetric density and decrease the demand of the incident laser power

    當脈沖聚焦點相對于固體浸沒透鏡底面離焦時，對系統的有效數值孔徑進行了計算，結果表明採用固體浸沒透鏡離焦的方式進行記錄，系統的有效數值孔徑最低可增大到固體浸沒透鏡插入前的折射率倍，其數值孔徑的理論極限值為存儲介質的折射率。
  2. 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。
  3. Experimental study on that 532nm 、 1064nm 、 1319nm 5khz frequency pw laser irradiate the ccd respectively. with the data of experiment, the thresholds of laser power density that induce ccd saturation, crosstalk and irreparability damage were calculated. the phenomenon that 532nm 5khz laser can induce part of ccd functional damage but absolutely damage was found

    根據實驗數據計算了532nm 、 1064nm高重頻脈沖激光使ccd出現飽和、串擾以及被破壞的功率密度閾值;實驗發現一定功率密度的高重頻532nm脈沖激光可以使ccd局部損傷而不致整體破壞;實驗進一步證實了1319nm激光不能使可見光ccd產生響應。
  4. Since the introduction of high - power short - pluse lasers well, there has developed a strong interest in the high - density high - temperature plasmas produced by the interaction of intense laser light with matter

    自從高能短脈沖激光被很好地應用以來，人們對激光作用在物質上所產生的高密度熱等離子體表現出了強烈的興趣。
  5. Elemental analysis based on the emission from plasma generated by focusing a powerful laser beam on a solid sample surface is known as laser - induced breakdown spectroscopy ( libs ). when the power density of laser on the sample surface is high enough, the sample is vaporized, and the neutral and ionic species are formed in excited states

    利用聚焦的強激光束入射固體靶表面產生激光等離子體，對等離子體中原子和離子發射譜進行雜質元素分析，這一過程叫做激光誘導擊穿譜（ laser - inducedbreakdownspectroscopy ） ，簡稱（ libs ） 。
  6. In this experiment, a neodymium glass laser is used to study the effects of the operating voltage, power density, the height from the observed location of the plasma to the surface of the sample, the location of the sample, the gas composition and the pressure on the intensity and quality of the spectrum

    本文採用高能量釹玻璃激光器，研究了激光器工作電壓、功率密度、等離子體的觀測高度、樣品位置、環境氣體及氣壓對等離子體的譜線強度及譜線質量的影響，獲得了最佳的實驗條件，並測量了金屬分析樣品中某些元素的含量。
  7. The relationships between the laser performance index, such as laser power densities, pulse energy and energy densities, and the diameter of holes have been set up, and a experience formula between the energy density and the diameter of holes has been established by the regression method, based on the experiment results

    在此基礎上，本文對微噴帶激光打孔機的性能進行了試驗研究，得到了激光功率密度、激光脈沖能量和激光能量密度對打孔孔徑的影響關系。通過數據回歸的方法，建立了激光能量密度與孔徑之間的半經驗公式。
  8. The results showed that the processing parameters ( such as laser power, the diameter of laser, scanning speed of laser beam, ratio of overlapping ) are important to acquire a perfect component. furthermore, in order to assure geometric properties ( accuracy, surface finish ), the structure of the off - axial powder nozzle was improved to avoid the oxidation of the molten pool. the density metal test sample of rene95 high - temperature alloy was made by lsf through optimizing the processing parameters

    本文對激光立體成形的工藝特性進行了深入系統的研究，發現如果要獲得理想的成形效果，就必須對成形過程中的工藝參數進行精密控制，例如激光功率、激光光斑大小、光束掃描速度、搭接率等；同時為了保證成形件有較高的尺寸精度和表面質量，必須對成形零件的氧化問題進行控制，通過改進側向送粉噴嘴的結構設計，成形件的表面氧化問題得到適度控制。
  9. 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。
  10. The optimized experimental conditions are determined and the densities of some elements in the mental alloy standard samples are measured. the experimental results shows that the spectral intensity of the plasma enhances significantly with the increase of the operating voltage and the power density. ( 1 ) to the steel ally sample, the emission intensities of the spectra reach to the maximum values when the laser operating voltage is 1600v and the argon pressure is 600 torr. under the same pressure, the spectral intensity of the plasma in the argon atmosphere is stronger than that in the air. when the argon pressure is 320 to rr, the signal - noise ration is about 5 times than that which the argon pressure is 700 torr, but the temperature of plasma is less about 1000k

    （ 1 ）對于光譜標鋼準樣品，當激光器工作電壓為1600v 、氬氣壓力為600乇時，譜線強度達到最大，並且在相同壓強下，氬氣中的等離子體與空氣中的等離子體相比，其輻射強度明顯增強；氬氣壓力為320乇時的譜線信背比約為600乇條件下的5倍，而等離子體溫度卻下降了近1000k ，即等離子體溫度隨環境氣壓的增大而增大；當激光束的焦斑在樣品表面上下移動時，激光誘導量、等離子體的激發溫度、譜線強度都呈不對稱性分佈，其最大值對應的焦斑位置都位於樣品表面之下0 . 4mm左右。
  11. In detail, the major work that have been done are as follows : l. irradiated by the 1. 06 m 1. 319 m 3. 8 m laser respectively, when the incident laser power density is between the saturation threshold and the damage threshold, the vibrating phenomenon and the zero - output phenomenon can be seen in the pv - type detectors " response curve

    論文的主要工作有： 1分別用波長為1 . 06 m 、 1 . 319 m 、 3 . 8 m的激光輻照光伏型（ pv ） hgcdte探測器，實驗發現，當輻照激光的功率密度大於其飽和閾值而小於其破壞閾值時，探測器的輸出存在「振蕩現象」和「零壓輸出現象」 。
  12. Cubic nitride boron ( c - bn ) films have been prepared at room temperature ( 25 ) by radio frequency plasma enhanced pulsed laser deposition ( rf - pepld ), assisted with substrate negative bias. in this paper, we primarily studied the effect of laser energy density, radio frequency power, substrate bias and depositing time on the growth of c - bn films, and analyzed the formation process and mechanism of c - bn films deposited by rf - pepld method at room temperature

    本文採用偏壓輔助射頻等離子體增強脈沖激光沉積（ rf - pepld ）方法在常溫下（ 25 ）制備立方氮化硼（ c - bn ）薄膜，初步研究了薄膜沉積參數：激光能量密度、射頻功率、基底負偏壓和鍍膜時間對立方氮化硼薄膜生長的影響，並分析了常溫下用rf - pepld方法沉積立方氮化硼薄膜的形成過程和機理。
  13. Presently, the laser pulse from the high power ultrashort laser system is several femtoseconds in duration, tw ( or pw ) level in peak power, 1020 w / cm2 ( or 1021 w / cm2 ) in focusing power density, according electric field is much stronger than coulomb field in atoms

    目前，高功率超短脈沖激光放大系統輸出的激光，脈寬達到幾個飛秒，峰值功率達到太瓦甚至拍瓦量級，聚焦功率密度達10 ~ 20w cm ~ 2 ，甚至1021w cm2 ，相應的電場比原子內庫侖場強得多。
  14. After obtaining optimized laser frequency 5hz accepted - pulse - times 10 / second by experiments, laser power density increased little by little is focused on study

    實驗在優化頻率為5hz ，受光次數10次秒時，重點研究了激光能量密度由小到大對晶化性能的影響。
  15. ( 3 ) influence of laser power density on atomic emission intensity is investigated

    （ 3 ）研究了激光的輻射功率密度對libs信號強度的影響。
  16. I find that the crystallization performance is the best at laser power density 300mj / cm2. it means crystallization degree is the best, grains are the most uniformity and film stress is the least

    實驗發現在能量密度為300mj cm ~ 2時晶化性能較好，即晶化度最高，晶粒最大且均勻，薄膜應力最小。
  17. Experimental study on that 1064nm 、 1319nm cw laser irradiate the visible light linear array ccd respectively. with the data of experiment, the thresholds of laser power density that make the ccd saturation, crosstalk and thermal saturation were calculated

    通過實驗獲得了1064nm連續激光使ccd成像系統光飽和、串擾、熱飽和的功率密度閾值;分析了線陣ccd的橫向光飽和效應;初步證實了可見光ccd對1319nm激光的不響應特性。
  18. The detectors " major response to the irradiation of in - band light is optical effect, while thermal effect can be seen when the incident laser power density is somewhat higher ; when irradiated by off - band light, the detectors " major response is thermal effect

    實驗發現，探測器對波段內激光的響應主要表現為光效應，當輻照激光的功率密度比較大的時候，還會有熱效應出現；而探測器對波段外激光的響應特性則主要表現為熱效應。
  19. Because p - si is of more special characteristics, comparing to a - si and c - si, firstly, i set forth electrical features of p - si film and acknowledge profoundly electrical mechanism of p - si film. then three parameters of laser annealing, including laser frequency -, accepted - pulse - times and laser power density are studied how to influence crystallization of p - si

    因為多晶硅和非晶硅及晶體硅相比具有更獨特的特點，所以我們先闡述了多晶硅薄膜的電學特點，對多晶硅的導電機理有了深刻的了解；然後研究了激光頻率、受光次數和激光功率密度三個參數對晶化多晶硅的影響。
  20. In order to obtain the laser beam with better beam quality, less spot diameter and higher power density in laser manufacturing ( lm ), gaussian beam used in lm was transmitted and transformed

    摘要為了獲得光束質量較好、光斑尺寸較小、功率密度較高的、適合激光加工的激光束，對激光加工中的高斯光束進行傳輸與變換。
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