輻射受激發射 的英文怎麼說
中文拼音 [fúshèshòujīfāshè]
輻射受激發射
英文
stimulated emission of radiation-
Some of the excited atoms undergo radiative deexcitation.
某些受激的原子會發生輻射性退激。However, in the pulse application fields, the output pulse energy from single mode fiber lasers or amplifiers is limited by amplified spontaneous emission ( ase ), nonlinear effect and facet damage
在脈沖激光應用領域中,這類小芯徑光纖放大器和激光器的輸出脈沖能量受限於自發輻射放大、非線性效應以及光纖的端面損傷。In the decades after the 1917 paper, sporadic references to creating stimulated emission appeared, but none of the ideas were pursued
在1917年論文發表后的幾十年內,有些文獻曾零零星星地提到產生受激輻射,但這些想法都沒有被進一步研究。Emission ( by atoms, molecules or ions in a material ) of optical radiation which, for certain wavelengths or restricted regions of the spectrum, is in excess of the radiation due to thermal emission from the material at the same temperature, as a result of these particles being excited by energy other than thermal agitation
原子、分子或離子由於受能量的激發而產生的某一波長或波長范圍內的光輻射,這種光輻射的能量超過了在相同溫度下該材料產生的熱輻射的能量。Theory of semiconductor 、 absorption 、 direct transition 、 indirect transition 、 emission 、 radiation recombination 、 iradiation recombination 、 donor 、 acceptor 、 exciton 、 phonon 、 photon 、 polarition
半導體基本原理、吸收、直接躍遷、間接躍遷、輻射、發光復合、非發光復合、施子、受子、激子、聲子、光子、恆化子。Uygur a acid have the strong blanching effect, however will also destroy the skin surface the sebum membrane, this time the skin will receive factor stimulations and so on ultraviolet radiation, the skin can double protects oneself - - release more melanin, will initiate the more serious pigment precipitation phenomenon
維a酸等成份都有較強的漂白效果,然而也會破壞皮膚表面的皮脂膜,此時皮膚受到紫外線輻射等因素刺激,皮膚會加倍自我保護? ?釋放更多黑色素,引發出更嚴重的色素沉澱現象。We use the laser output ( 320 nm, 200 fs ) of optical parametric amplifier ( opa ) in < wp = 5 > an active passive mode - locked femtosecond ti - sapphire laser operating at a repetition rate of 1khz as a exciting resource to develop optically pumped stimulated emission of zno thin films. when rectangular stripe laser irradiates thin films, optical resonant cavity is naturally formed between two nanocrystallites along with the rectangular laser stripe and planar weveguide confines the light scattering
利用飛秒激光器作為光泵浦激發光源,研究了氧化鋅薄膜的光泵浦受激發射,當條形光斑輻照薄膜樣品時,將沿著光斑條由氧化鋅納米晶面自然地形成光學諧振腔,由於平面介質波導結構限制光散射,所以成功地觀測到二氧化硅襯底上的納米氧化鋅( zno )薄膜的紫外受激發射。We give ptr ' s amplitude and phase signal of one dimension based on the theory of ptr, discuss the ptr ' s signal ' s frequency characteristic, and a method for measuring thermal diffusivity of opaque materials is introduced. then, we study on anisotropic materials " thermal conductivity, the temperature field and thermal conductivity tensor of anisotropic materials is theoretically deduced from the theory of ptr, and is proved by the experiment
從光熱輻射理論出發,推導出一維情況下ptr信號的振幅和位相表達式,討論了光熱信號的頻率特性,介紹了一種用ptr技術測量不透明材料熱擴散系數的優化方法;接著研究分析了各向異性介質受調制激光束輻照下產生的光熱信號,在理論上推導出各向異性介質的溫度場以及熱導率張量並給予一定的實驗驗證。We also experimentally observed the effect of sodium atom - molecular collisions and sodium atom - atom collisions on the line - shape and intensity of fluorescence spectra. in addition, the optically pumped infrared stimulated emission and energy transfer up - conversion process are observed in pr3 + : y2sio5, and with the threshold energy, temperature dependence and divergence angle for the stimulated radiation are measured
此外還研究了摻雜在固體y _ 2sio _ 5中的pr ~ ( 3 + )的光泵紅外受激輻射和能量轉移上轉換,分別測得了紅外受激輻射的閾值能量和發散角,並擬合得出了能量轉移速率。Results showed, after the lymphocytes accept the radiation, the luminescence was enhanced by mcla - a kind of luminescence probe. enhanced luminescence increased with the radiation dose firstly, then descended. this phenomenon is the result of stress reaction of radiated lymphocyte
實驗顯示,淋巴細胞受輻射后,在化學發光探針mcla的作用下,化學發光會增強;被增強的化學發光隨淋巴細胞受輻射的劑量的增大先增強后急劇降低,而這種關系正是淋巴細胞活性與淋巴細胞受輻射后的應激反應的結果。Compared to gan, which is one of the most successful wide - band semiconductor materials at present, zno is promising : high - quality zno with very low defect densities can be synthesized at much lower temperature than gan ; zno can emits light with shorter wavelength than blue light emission from gan ; zno has higher excitonic binding energy ( ~ 60mev for zno, 25mev for gan ), which promises strong photoluminescence from bound excitonic emissions at room temperature ; meanwhile, homogeneous bulk zno is available
和gan相比, zno薄膜具有生長溫度低,激子復合能高( zno : 60mev , gan : 21 25mev ) ,受激輻射閾值較低,能量轉換效率很高等優點。有可能實現室溫下較強的紫外受激發射,制備出性能較好的探測器、發光二極體和激光二極體等光電子器件。Results in the situation of the experiment, stimulation effect have n ' t been found in immunoglobulin and albumin ; stimulation effect of low dose radiation to sod was survey in the dose of 12. 5 cgy ; we also found that there is several dose point from 7. 5 to 30 cgy have stimulation effect to il - 6, meantime and radiation of 7. 5 cgy have adaptive response to il - 6 ; il - 6 increased drastically in the group of 300 cgy of radiation
結果實驗設定條件下,對白蛋白、球蛋白尚未看到低劑量輻射的刺激作用。低劑量輻射對sod的刺激作用發生在12 . 5cgy 。發現在7 . 5到30cgy間,低劑量輻射對il ? 6的刺激作用,存在多個劑量點; 7 . 5cgy能誘導il - 6的適應性反應,受照劑量300cgy時, il ? 6明顯升高,且幅度很大。Apart from x - rays which are emitted by excitation of electron clouds, most of the ionizing radiation come from the
射線是由受激發的電子云射出,而其他的電離輻射主要是由分享友人