調頻激光器 的英文怎麼說

中文拼音 [diàobīnjīguāngqì]
調頻激光器 英文
fm laser
  • 調 : Ⅰ動詞1 （配合得均勻合適） harmonize; suit well; fit in perfectly 2 （使配合得均勻合適） mix; adju...
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 激 : Ⅰ動詞1 （水因受到阻礙或震蕩而向上涌） swash; surge; dash 2 （冷水突然刺激身體使得病） fall ill fr...
  • 光 : Ⅰ名詞1 （照耀在物體上、使人能看見物體的一種物質） light; ray 2 （景物） scenery 3 （光彩; 榮譽） ...
  • 器 : 名詞1. （器具） implement; utensil; ware 2. （器官） organ 3. （度量; 才能） capacity; talent 4. （姓氏） a surname
  • 調頻 : frequency modulation （fm）; frequency adjustment調頻磁帶錄音機 f m magnetic tape recorder; 調頻...
  • 激光器 : [光學] （光激射器） laser （縮自 light amplification by stimulated emission of radiation）; optic...
  • 激光 : [物理學] laser 激光靶 laser target; 激光報警器 laser avoidance device; 激光玻璃纖維 laser fibre; ...
  1. For micro - cavity semiconductor laser, station model is proposed in this paper and its steady - state and instantaneous characteristics when the coupling efficiency of spontaneous emission into a lasing mode is equal to 1 are analysised. for current noise, sp noise, noise, p noise, as well as current modulation, sp modulation, modulation and p modulation, using small - signal approximation, we derive the laser ' s corresponding transfer functions. and we calculate their signal - to - noise ratio ( snr ) gain in various parameters through frequency domain analysis in the premiss of large input snr

    本文對于微腔半導體激光器，提出站模型，能夠較直觀簡潔地分析微腔半導體激光器的穩態和瞬態特性，利用此模型對具有重要實用價值的= 1的微腔半導體激光器進行了討論；對于電流i噪聲、自發發射壽命_ （ sp ）噪聲、自發發射因子噪聲、光子壽命_ p噪聲，以及電流調制、 _ （ sp ）調制、調制、 _ p調制，在小信號近似下，得到了相應的激光器的傳遞函數；在大信噪比的前提下，對激光器進行了頻域分析，分別計算了它們在不同參數下的信噪比增益，分析了其抗噪聲性能。
  2. It is a very good linear - polarization laser, and its output is characterized by obvious optical bistability

    Jskhz以下，實現了真正意義上的可調諧環形腔單頻激光器。
  3. At present, people usually use birefrigence and quasi - phase - matching methods to achieve higher effiency in the process of conversion. a significant advantage of quasi - phase - matching method is that the interaction is occurred through the largest element of the x ( 2 ) tensor ; the period of optical superlattice can be designed randomly, and any interaction can be matched without walk - off angle ; they are fitted to be used in frequency conversion of lower power especially. the quasi - phase - matching method has some advantages over birefrigence method, improving the efficiency of frequency conversion ; the range of frequency conversion covers its whole transperant wavelength

    由於準相位匹配技術有其獨特的優勢，可以利用非線性光學晶體的最大二階極化張量，如ppln 、 pplt 、 ppktp用的非線性極化張量都是d _ （ 33 ） ，其有效非線性系數高出普通非線性光學介質（如bbo 、 lbo 、 ktp ）一個數量級，而且可以人為靈活設計調制周期，通過周期設計其頻率變換范圍可以覆蓋準相位匹配介質的整個透明波段，選擇無走離效應，解決了常規pm難以解決的問題，拓寬了非線性晶體的應用范圍，極大地提高了頻率轉換效率，已成為非線性光學材料和固體激光器的研究熱點之一。
  4. Traditional laser iff has poor security because of low frequency of laser beam coded pulse. this can be greatly improved when the pulses are modulated by continuous wave laser, but the power of this laser beam output is so low that it ’ s difficult to be detected and received by laser warning subsystem

    傳統的激光敵我識別器激光編碼脈沖頻率低，通信保密性差，使用連續波激光器經調制后激光編碼脈沖頻率高，保密性好，但輸出激光功率較低，難以達到激光告警分機探測接收的要求。
  5. The main limitation of a intensity - modulated - continuous - wave laser rangefinder is the leakage distortion created by the high frequency current source which modulates the laser diode

    在調強連續波激光測距系統中，調制激光器的高頻電流源產生的泄漏干擾是影響測距精度的主要因素。
  6. Some researches about frequency doubling are made, and two methods to improve intensity of second frequency generation are given. we realized q - switched 532 nm laser, by using nd : gdvo4 as laser crystal, using cr4 + : yag as saturable absorber, using ktp as intra - cavity frequency doubling crystal. average power of 109mw, repetition of 40khz, pulse width of 30ns, pulse energy of 2. 6uj, peak power of 91w are obtained

    4 .對倍頻理論進行研究和分析:討論兩種提高二次諧波功率密度的方一法;實驗匕在國內首次實現ld端面泵浦nd : gdvo4 / ktp ，用cr4 + : yag作為可飽和吸收片的綠光激光器，腔內倍頻得到了平均功率為109mw 、重復頻率為40khz 、脈寬為3ons 、單脈沖能量為2 . 6閃、峰值功率為glw的調q綠光輸出。
  7. Using fiber grating to substitute traditional wavelength - selecting components, the 8nm tuning range is realized at a repetition frequency of 2. 5ghz. ( 5 ). the wavelength - tuning methods of an active mode - locked fiber laser using a ld as a modulator are researched, and two tuning methods including temperature tuning

    （ 4 ）對主動鎖模光纖激光器的波長調節技術進行了研究，用光纖光柵代替傳統的波長選擇器件實現了主動鎖模光纖激光器的波長調諧，並獲得了波長連續調諧范圍達8nm 、重復頻率2 . 5ghz的穩定的光脈沖輸出。
  8. A comprehensive theory is presented for fm spectroscopy of doppler - broadened molecular iodine absorption lines. the relationship betwcen fm spectroscopy and modulation frequency and modulation index has been studied. the whole circuit for thc frcquency stabilized laser system has been developed

    建立了多普勒加寬碘分子線性吸收fm光譜的一般理論，對fm光譜與調制頻率和調制度的關系進行了研究；並研製了532nmnd : yvo _ 4 / ktp碘吸收穩頻激光器的電路系統；提出了虛擬激光穩頻技術的概念。
  9. The rf discharge excited waveguide co2 laser has been the suitable light source of lidar, because of its low volume, high efficiency and the particular wavelength

    由於射頻激勵波導co _ 2激光器體積小、效率高、調諧范圍寬、波長正處于大氣透射窗口等獨特優勢，它已成為激光雷達等應用的理想光源。
  10. The prerequisite of actively mode - locked fiber laser stable work is that the modulation signal frequency must be the integral multiple to the cavity resonance frequency

    主動鎖模光纖激光器穩定工作的前提條件之一是調制信號頻率應為腔內縱模間隔的整數倍。
  11. We advance, for the first time to our knowledge, that efficient self - pumped phase conjugation performed with an ceibatioa crystal with low repetition ( lhz - 10hz ) nanosecond pulses from a q - switched nd : yag laser. phase conjugation reflectivity as high as 21. 5 % were obtained at an incident angle of 50. 3

    首次獲得了低脈沖重復率（ 1hz ）的調q倍頻nd ： yag激光器作用於ce ： batio _ 3浙江大學碩士學位論文晶體，產生自泵浦位相共軛（ sppc ）作用的實驗結果。
  12. With double - frequency technique and q switch technique the laser delivers a laser pulse of 532 - nm in wavelength, 5 - ns in pulse width, 35 - mj in energy and 2 - cm in coherent length

    所用激光器為nd : yag脈沖激光器，採用了調q和二倍頻技術，波長為0 . 532 、脈沖寬度為7ns 、相干長度為2cm ，能量為35mj 。
  13. The nonlinear reverse saturable absorption measurements of composite materials were performed with a frequency - doubled q switched nd : yag laser. appreciable effect of optical limiting was observed in the experiments

    用yag倍頻調q脈沖激光器測試了復合材料的非線性反飽和吸收性質，發現材料具有明顯的光限幅效應。
  14. Theoretical model of self - mixing interference in a linear frequency modulated laserdiode is presented by using the dynamic theory of semiconductor laser with weak external optical feedback. the characteristics of oscillation frequency shift and output power changes of the laser diode are analyzed by using the theoretical model. the absolute distance from front facet of laser diode to target can be found by measuring spectrum of output power of the laser diode

    使用半導體激光器在弱反饋條件下的動力學理論，建立了線性調頻半導體激光器的自混頻干涉理論模型.基於該模型，分析了激光器振蕩頻率偏移與輸出功率變化特性.通過測量激光器輸出功率譜，可以得到激光器前端面與被測目標之間的距離
  15. The basic principle and characteristics of optical frequency conversion technology based on the photonic crystals are firstly summarized in the paper ; then, the current developments of frequency conversion of photonic crystals are also presented ; finally, its importance are pointed out in the tunable laser and other application fields

    摘要文章首先介紹了光子晶體光學頻率變換技術的基本原理和技術特點；然後簡述光子晶體光學頻率變換技術研究進展情況；最後指出了光子晶體變頻技術在可調諧激光器和其它領域中的應用前景。
  16. A diode pumped cr4 +, nd3 + : yag crystal self - q - switched laser is demonstrated with fiber coupled ld and the imaging system. the pulse laser with 1064 nm wavelength is obtained. the maximum average output power is 3. 36 w, and the pulse duration is 65 ns, and the repetition rate is 87 khz, the opto - optical efficiency is 15. 3 %, the slope efficiency is 23. 8 %

    用光纖耦合輸出的ld ，通過成像系統會聚，對二極體泵浦的自調q激光器進行了實驗研究，得到了平均功率3 . 36w ，脈沖寬度65ns ，重復頻率87khz的1064nm脈沖激光。
  17. ( 3 ) ln the fourth chapter of this dissertation, a tunable single - longitudinal - mode erbium doped fiber ring laser is achieved by using the very narrow bandpass characteristics of the self written grating formed in a section of erbium doped flber withoat undergoing pumping by stable standing wave in it. tl1e tunable laser ' s wavelength tuning range is 40nm, from l 523. 79llm to l563. 92nm

    三、在本文第四章，利用駐波干涉和飽和吸收誘發的自寫入光纖光柵的窄帶濾波特性及反射波長自適應特性，研製成可調諧摻鉺光纖環形腔單頻激光器，其波長連續可調諧范圍達40nm （ 1523 . 79nm ?安激大學碩士學位論文摘要1563
  18. The intracavity photon density and initial population inversion density are assumed to be gaussian distributions instead of plan wave assumption, based on this assumption, the rate equations of diode - pumped intracavity - frequency - doubled passively q - switched laser are modified. through solving these space - dependent rate equations numerically, the results under different assumption are compared. 5

    將腔內光子密度和初始反轉粒子數的平面波近似修正為高斯分佈近似，獨立地導出描述二極體泵浦內腔倍頻-被動調q激光器的速率方程，並通過數值求解該方程比較了兩種近似下脈沖特性的不同； 5 .實驗驗證了2中提出的實驗方案，並對實驗結果進行了分析。
  19. In this paper, we have studied the theory and experiment of intelligent wide - band tunable laser around beijing natural science foundation proposed program and developed two testing laser system

    本文圍繞著北京市自然科學基金項目，對智能化寬頻帶可調諧激光器進行了理論和實驗兩方面的研究，並初步研製出兩臺實驗樣機。
  20. In the experiments, the phenomenon of the fringe frequency doubled we observed, ha hind that the resolution of the optical feedback system we doubled and the sensitivity of din optical feedback system we also improved after the modes competition between both the polarized light beams

    結果表明，光回饋系統解析度提高了1倍，同時利用雙頻激光器兩垂直偏振光間的模競爭，使得倍頻條紋的調制幅度明顯增大，從而使得光回饋系統的靈敏度大大提高。
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