laser bandwidth 中文意思是什麼
laser bandwidth
解釋
激光帶寬-
For liquid xe aerosol spray target, important lpp characteristics, such as laser - to - euv conversion efficiency, euv radiation absorption, debris production by target material erosion or deposition, are studied in detail, a 13. 4nm conversion efficiency of 0. 75 % into 2 % bandwidth and 2 steradian emission solid angle is achieved at 0. 5mm laser - nozzle distance
在實驗上，建成了一套高光譜解析度和高靈敏度的軟x射線脈沖輻射測量裝置。測量了co _ 2 、 o _ 2 、 cf _ 4 、 kr和xe液體微滴噴射靶lpp光源在6 20nm波段的軟x射線輻射光譜。 -
Due to its wide bandwidth, krf laser beam is ready to be homogenized by a method called induced spatial incoherence ( isi ) to generate uniform illumination on target, which is critical to eos measurements. a long pulse is also preferred to get a " cold " acceleration of flyer in impact experiments
在激光能量30焦耳、脈沖長度50ns 、焦斑直徑300um 、聚焦功率密度8 . 5 10 ~ （ 11 ） w cm ~ 2的條件下，考察了激光對飛片的加速效果、飛片的平面性與聚焦激光的平面性之間的關系。 -
The conclusions are as follows : the ultrasonic intensity is proportion to the laser intensity ; the ultrasonic induced by a laser line source has much more advantages than by a laser point source, such as stronger energy, higher snr, more directivity and shape ; the intensity of cfpi ' s output signal is linear with ultrasonic vibration velocity, and is effected by incidence angle and scattered angle ; snr will increase by reducing cfpi ' s bandwidth, reducing incidence angle, increasing cavity ' s length and reflectivity
在分析點光源激勵聲表面波機理的基礎上，求出了線光源激勵的超聲振動的位移表達式，發現線光源激勵的近場區表面波具有波形好，信噪比高，指向性好，幅度強等特點。通過理論推導，得出共焦fabry - perot干涉儀的輸出光強除了與樣品表面的振動速度成正比，並與入射角和散射角有關；適當減小cfpi的帶寬，增加腔長，增大鏡面反射率，或者減小檢測入射角都可以提高系統的信噪比。 -
In this paper, a new theoretical model is established for optical fiber pumped by broadband laser. using the new model, we have analyzed the influence of longitudinal - mode number, bandwidth and line - width of pumping source on sbs reflectivity, and pointed out the monochromaticity of pumping laser has obvious affect on optical fiber conjugator
成功解釋了激光線寬、縱模間隔與數目對光纖中sbs過程的影響，並通過數值計算分析了sbs閾值、反射率、相對穩定性、保真度等性能參數隨著注入激光能量、脈寬以及光纖長度、芯徑的變化趨勢。 -
Abstract : by using the pulse - sequence model ， the inverse problem of amplification of broad - spectral - bandwidth laser pulse has been studied ， i. e. ， to find the initial input temporal pulse profile ， spatial profile ， spectral distribution and fluence from the required output temporal ， spatial pulse profile ， spectral distribution and fluence as well as the given amplifier parameters
文摘:採用脈沖分割模型，研究了寬頻帶激光脈沖放大的逆問題，即由所要求的輸出激光脈沖時間、空間波形、光譜分佈和能量密度，並給定放大器參數情況下，求輸入激光脈沖時間波形、空間、光譜分佈。 -
Broad - area laser diode with 0. 02 nm bandwidth and diffraction limited output due to double external cavity feedback
帶寬近衍射極限輸出的雙外腔反饋半導體激光器 -
Based on the character of the eof gain at 1550 nm, a laser diode ( ld ) worked at 980 nm and acted as the pumping source, a eof employed as gain medium, and a fiber grating used as reflector, an ring - cavity all - fiber laser worked at 1562. 5 nm was demonstrated with an output power of 2. 0 mw and a bandwidth of 0
本文主要基於摻鉺光纖在1550nm波段的增益特性，利用帶尾纖的980nm半導體激光器作為泵浦源，鉺光纖作為增益介質，布拉格光纖光柵作為諧振腔反射鏡，實現了波長為1562 . 5nm的環形腔光纖激光器，得到了2mw的激光輸出。 -
The modulation bandwidth and the relaxation oscillation frequencies of the laser are quite different at different injection powers and wavelengths
發現在不同的注入光強度和波長下，激光器的調制帶寬和弛豫振蕩峰頻率會發生變化。 -
Computer technology and internet communication have been developed rapidly since the end of 20th century, which made a lager communication bandwidth was demanded synchronously. in the circumstances, the wavelength division multiplexing ( wdm ) technology was brought forward and applied widely, whereas, the development of wdm systems put forward a series of advanced qualifications about laser sources of optical communication
20世紀末以來，計算機與網路通信技術得到飛速發展，對網路帶寬的需求也隨之不斷增長，波分復用技術因適應這種需求而得到迅速推廣，同時也給通信激光源的性能帶來更高的要求。 -
Under the proper condition, the maximum locking bandwidth of the slave laser is approximately 4. 7ghz
在一定的條件下，測得從激光器鎖頻范圍最大約為4 . 7ghz 。 -
Meanwhile, with the development of wdm / dwdm communication systems, more and more attention is paid on the edfas with broader bandwidth, good gain and noise feature, and gain clamping, etc. according to the tianjin natural science foundation project : intelligent fiber amplifiers and light sources, the tianjin natural science foundation project : ( c + l ) broadband fiber amplifier and the nankai - delta ( tianjin ) project : development of gain flattened erbium - doped fiber amplifiers, this dissertation is mainly focused on the study of novel gain - clamped edfa, light sources, multi - wavelength fiber laser and variable optical attenuator for gain - clamped usage, gain and noise improvement of edfa, and broadband edfa
Wdm / dwdm通信系統的發展又需要edfa具有更大的帶寬、優良的增益和噪聲特性和增益控制等功能。基於上面的情況，並結合天津市重點基金項目? ?智能光纖放大器光源的研究、天津市重點基金項目? ? （ c + l ）超寬帶摻雜光纖放大器和南開-達爾泰（天津）項目? ?開發增益平坦的摻鉺光纖放大器等課題，論文主要圍繞新型增益控制edfa 、增益控制用光源、多波長激光器及可調光衰減器、 edfa性能優化和超寬帶edfa等方面進行了理論和實驗研究。
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