腔內激光調制 的英文怎麼說
中文拼音 [qiāngnèijīguāngdiàozhì]
腔內激光調制
英文
intracavity laser modulation- 腔 : 名詞1. (動物體內空的部分) cavity; chamber 2. (話) speech 3. (樂曲的調子) tune; pitch 4. (說話的腔調) accent; tone
- 內 : 名詞1. (內部; 里頭; 里邊) inner; inside; within 2. (妻子或妻子的親屬) one's wife or her relatives 3. (姓氏) a surname
- 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) ...
- 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...
- 制 : Ⅰ動詞1 (製造) make; manufacture 2 (擬訂; 規定) draw up; establish 3 (用強力約束; 限定; 管束...
- 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; ...
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For phonetic signal modulation, if the pass band range of the band pass filter ( bpf ) is 300hz - 3400hz, the anti - noise properties of laser are approximately independent of bias current and parameters of the cavity ; when the pass band range of bpf increases to a certain degree, modulating bias current and parameters of the cavity can improve the anti - noise properties of laser
對語音調制情況,如帶通濾波器的通帶范圍取為300hz - 3400hz ,則激光器的抗噪聲性能基本不依賴于偏置電流和腔內參數;當帶通濾波器的通帶范圍增大到一定程度,調整偏置電流和腔內參數可以實現半導體激光器的高抗噪聲性能。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。When a portion of light emitted from a laser source is reflected or scattered back into the laser cavity by an external target, the reflected light will mix with the light inside the cavity, causing a modulation of the laser output power
激光自混合效應是指激光器輸出的光被外部物體反射或散射后,其中一部分光又反饋回激光器的諧振腔,反饋光攜帶了外部物體的信息。與腔內光相混合后,會調制激光器的輸出,稱為自混合效應。Fiber lasers are very sensitive to environmental perturbations such as temperature fluctuations and mechanical vibrations due to their relatively long cavity length when the external environment changing. the cavity drifting produceing the phase noise and amplitude noise, this can cause the output pulse unstablely
但由於主動鎖模光纖激光器腔內有較長的光纖,而光纖的長度極易因外界環境的影響而發生漂移,因而調制頻率和腔長很難保持匹配。Both can be operated in stable dual - wavelength mode due to the polarization hole burning or switch between two wavelengths at room temperature, only by simple adjustment of a polarization controller
僅僅通過調整腔內偏振控制器的狀態,就可使激光器工作在任意一個單波長或雙波長同時輸出的模式。The wavelengths are specified by two bragg gratings in pm fibers. the proposed laser can be designed to operate in stable four - wavelength or wavelength switching modes only by simple adjustment of two polarization controllers. two moire bragg gratings in pm fibers are respectively fabricated successfully through stretching and double, triplicate
4 .在2 , 3工作的基礎上,在連續光輸出的激光器諧振腔內加入調制器進行主動鎖模,分別得到了基於側向應力作用下的光纖光柵、單個保偏光纖光柵、兩個保偏光纖光柵進行選頻的多波長的鎖模光纖激光器。The results of numerical simulation show that for various kinds of noise without modulation the anti - noise properties and the output quality of laser can be improved by selecting appropriately bias current and parameters of the cavity
數值模擬的結果表明,對于無調制時的各種噪聲,適當選取偏置電流和腔內參數可以提高微腔半導體激光器的抗噪聲性能或激光輸出的質量。分享友人