laser excitation 中文意思是什麼

laser excitation 解釋
激光激發
  • 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...
  • excitation : n. 1. 刺激，興奮，激發，鼓舞。2. 【物理學】激發；【電學】激勵、勵磁。3. 【植物；植物學】激感（現象）。
  1. ( 2 ) the emission spectra of laser ablation metal copper plasma were measured. the detailed mechanism of plume emission of cu plasma was qualitatively explained using a simple model based on excitation of atom and ion in plume arising from inelastic collision between the elemental species and electron with high kinetic energy. under the local thermal equilibrium model, the electronic temperature of copper plasma was deduced to be in the 104 scale by its emission lines

    （ 2 ） cu等離子體光譜：在420 570nm波長范圍內觀測了激光燒蝕cu等離子體的光譜和各發射譜線在等離子體中的空間分佈；比較了激光能量對cu等離子體發射光譜、電子溫度的影響；用局部熱力學平衡（ lte ）近似，測得cu等離子體的電子溫度為104k數量級；在不同背景氣壓下，觀測了激光燒蝕cu等離子體光譜的空間分佈。
  2. The he - ne laser with the wavelength of 632. 8nm, when was interacting on the pd wire, which loading ratio is 0. 6, we gain the apparent " excess heat " by the excitation

    而且，在he - ne激光器發出的波長為632 . 8nm激光的照射作用下，在充氫率為0 . 6時，曾一度觀測出明顯的「過熱」現象。
  3. In order to improve the output quality of th e laser, we brought forward the concept of double pre - ionization, which is beneficial for the effective excitation of the laser media in the resonator

    為了提高激光器輸出性能，我們提出了有利於腔內介質有效激發的雙預電離概念。
  4. Therefore, either reinforcing the pre - ionization or eliminating the harmful impurity is propitious to increasing the effective excitation of the laser media in the resonator so as to increase the output power

    因此增強預電離和消除有害雜質均有利於提高腔內激光介質的有效激發進而提高激光器輸出功率。
  5. The present thesis is devoted to improving the excitation of the laser media ( gas mixture ) in the resonator of the high - average - power tea co2 laser by means of reinforcing the pre - ionization and eliminating the harmful impurity

    本文正是從提高預電離及清除混合氣中的雜質這兩個方面研究改善高平均功率teaco _ 2激光器腔內介質（混合氣體）的激發性能的。
  6. Under high air pressure, a critical problem for the normal discharge is whether enough pre - ionization can be achieved in the laser media or not. however, the cycling pumping oil steam emerging during the flow of the gas mixture and the vapor infiltrating from outside have a strong absorption of the infrared light or a role of counteracting the excitation

    在高氣壓條件下能否正常放電，關鍵問題是主電極間的激光介質能否獲得足夠的預電離；而混合氣流動過程中出現的循環泵油蒸汽，及從外界滲透的水蒸汽等都對紅外光有相當強的吸收作用或消激發作用。
  7. The coherent excitation property of a two - level atom with a hyperfine structure in narrow band laser field

    窄帶激光與能級具有超精細結構的二能級原子的相干激發
  8. The components of the tangential stretch mode of swtns are assigned, the variational curve of the value of ig / id changed with laser power is obtained at 632. 8nm excitation, the vibration of d mode is assigned renewedly

    對單壁碳納米管的正切拉伸模的成分進行了歸屬，在632 . 8nm激發波長下得到了ig / io值的隨激光功率變化曲線。重新對d模的振動進行了歸屬。
  9. In addition, from the angle of removing the negative gain media in the cycling gas and the excitation - counteracting media, we put forward the eliminating the impurity by using of the non - uniform stationary electrical field and the swirling electrical field so as to improve the effective excitation of the laser media

    本文還從清除循環氣體中負增益介質以及消激發介質的角度來改善激光介質的有效激發，提出了使用非均勻靜電場和渦旋電場清除雜質的方案。理論分析與部分實驗驗證表明，這兩種方案都能有效地清除混合氣中的雜質。
  10. Proof of distributed feedback was the tuning of the laser wavelength over 130°a by changing the grating period, and the absence of shift in wavelength with increasing excitation current.

    存在分佈反饋的證據是，改變光柵周期可使激光波長在130A范圍內變化以及波長不隨激發電流的增大而移動。
  11. The method for analyzing the excitation spectral structure of diatomic molecule with laser induced fluorescence

    激光誘導雙原子分子熒光激發譜結構的分析方法
  12. In part three, the normal raman and resonant raman scattering spectra of single - walled carbon nanotubes are measured at 457. 5nm and 632. 8nm laser excitation wavelength. by theoretical analysis, the diameter distributions of swnts were obtained, style and configuration parameter were speculated furtherly

    研究了在兩種不同激發波長下的單壁碳納米管的拉曼光譜，用457 . 5nm和632 . 8nrn兩種不同的激發光分別測得了單壁碳納米管的正常拉曼光譜和共振拉曼光譜。
  13. In the third section, i. e. chapter five, the normal raman spectra of nil2, cul2, pdl2 powder are studied under the excitation of laser with the wavelength of 632. 8nm and aqueous silver colloid is prepared by pulsed laser ablation, from which the surface enhanced raman spectra of the three compounds are obtained. after preliminary assignment, the identical and different features of vibration of the compounds due to the different central metal atoms are analyzed

    第三部分，即論文的第五章，我們以632 . 8nln為激發波長研究了nilz 、 culz和pdl :三種新型金屬有機化合物粉末的正常拉曼光譜，並且以脈沖激光刻蝕法制備了水銀膠，以其為襯底研究了三種化合物溶液在其上的表面增強拉曼光譜，通過對其拉曼光譜進行了初步指認，了解由於中心原子的不同，三種金屬有機化合物分子振動的相同和區別。
  14. Secondly, the third order nonlinear optical properties of these compounds are studied under the excitation of ps pulsed laser with the wavelength of 1064nm using z - scan technique, nonlinear refractive indices and nonlinear absorption coefficients are calculated according to the z - scan experiment curves of the compounds. all the three compounds have self defocusing characters and two photon absorptions. lastly, nonlinear refraction and absorption properties of these compounds are studied by z - scan technique under the excitation of ps pulsed laser with the wavelength of 532nm the self defocusing and reverse saturation absorption are found in these compounds

    根據實驗曲線計算了它們在1064nm下的三階非線性折射率和非線性吸收系數，三種化合物都具有自聚焦特性，並且在該波長下，三種化合物均具有雙光子吸收，最後，以皮秒脈沖的532nm為激發波長，採用z掃描方法，研究了三種金屬有機化合物的非線性折射和非線性吸收性質，在該波長下三種化合物仍然表現為自聚焦特性，且其吸收為反飽和吸收。
  15. In the second section, i. e. chapter two, three and four, firstly, the thermal induced third order nonlinear optical characters of three organometallic complexes ( nil2, cul2, pdl2 ) are studied by the z - scan technique, thermaloptical coefficients of the three compounds excited under different laser wavelengths are calculated the results show that the thermaloptical coefficients are dependent on excitation wavelengths, the absorptions under these wavelengths and molecular structures of these compounds

    第二部分，即論文的第二、三、四章，首先，我們利用連續激光的457 . 5nm 、 488nm 、 514 . 5nm三個波長z掃描方法研究了nil _ 2 、 cul _ 2 、 pdl _ 2三種新型化合物的熱致三階非線性光學特性，分別計算了三種化合物在各個波長的熱光系數。結果表明，其熱光系數與激發波長、在該波長下的吸收、及化合物結構都有一定關系。
  16. The main content and important results of this thesis are as following : a series of er + - doped borosilicate glasses were prepared by varying the composition. absorption spectra of four glasses were measured. 1. 51uminescence under the excitation of a 978nm ld and visible luminescence with a 488ar + laser were observed

    測量了樣品的吸收光譜，在978nmld低功率激發下，均觀測到了系列玻璃樣品中er ~ （ 3 + ）的1 . 5 m近紅外發射，在488nmar ~ +激光激發下，觀測到了可見區發光。
  17. We also report the uv - visible optical absorption spectra of these colloids. to the metal plate prepared simultaneously, the measurement result of sem and afm of this plate is also reported and the roughness of the silver plate surface is about 60nm. both the colloids and the nano - scale metal surface can become the very perfect sers substrates. rhodamine b, a kind of strong fluorescence laser dye, with gold colloidal surface, has been studied by surface - enhanced raman spectroscopy ( sers ) with near - infrared ( nir ) excitation in the presence of the halide ions ( cf, br -, f )

    利用透射電子顯微鏡（ tem ） ，對膠體粒子的尺寸大小及形態進行了觀測，表明這些膠體為粒徑介於5 35nm的納米體系，並對該膠體體系進行了紫外?可見吸收光譜的研究；在制備出金屬膠體的同時，經過激光照射后的金屬表面為納米量級的粗糙表面，對該表面進行了掃描電鏡（ sem ）及原子力顯微鏡（ afm ）的測量，結果顯示該表面的粗糙度平均為60nm 。
  18. The second part is about co2 lasers. we first discuss the mechanisms of population inversion, including excitations and relaxations ( electron collision excitation, resonance transition excitation impacted by excited n2 molecules, the relaxation of both the lower - upper laser levels and the lowest level of co2 )

    首先，討論了二氧化碳激光粒子數的反轉機理，包括電子碰撞激勵、激發態n2分子等共振轉換激勵過程，激光上下能級co2 （ 00 1 ， 10 0 ）以及最低能級co2 （ 0110 ）的弛豫過程等幾個方面
  19. In former stl instruments, a laser beam with a gaussian distributed intensity was commonly used as the excitation source. nevertheless, the output of a high power laser is usually a superposition of multi - modes rather than a gaussian distribution ( tem00 ). therefore, it is very convenient to add an aperture to get a top - hat beam

    以前的表面熱透鏡裝置中，多使用高斯光束作為激勵光，但由於高功率激光器一般為多模輸出，要獲得嚴格的基模高斯光束比較困難，而平頂光束可以通過在激光器前加一定大小的光闌實現，降低了對激光光束質量的要求，更有利於實際的測量。
  20. Measurements had been performed under a ps laser excitation at 1064nm and 532nm using the z - scan technique. the real part of x ( 3 ) showed positive nonlinearity for both measured wavelength. nonlinear absorption evidently existed that attributed to saturation absorption process

    在1064lun和532run激光波長下，多孔硅的實部均為一個正值，樣品存在明顯的非線性吸收，這種吸收與飽和吸收相對應。
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