laser band 中文意思是什麼
laser band
解釋
激光輻射帶-
It is transparent in a region from the visible to the infrared range ( 0. 45 - 13 ? m ) and has a fitful birefringence and a large nonlinear coefficient. aggas2 crystal can be made to be octonary device, difference - frequence device and parametric oscillator, and laser sources of different frequences in 1. 8 - 11 ? m band can be provided
其紅外透波范圍寬（ 0 . 45 - 13 m ） ，具有適宜的雙折射率和大的非線性系數，可製成倍頻、差頻和光參量振蕩器件，在1 . 8 - 11 m范圍內可提供多種頻率的激光光源。 -
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。 -
Some phenomena were observed when the hgcdte ( pc, pv ) detectors were irradiated by off - band cw co _ ( 2 ) laser which are much different from that when irradiated by in - band light. the irradiation of the off - band light can have a very strong disturbing effect on the detectors. a one - dimensional model is employed to do some work of qualitative and quantitative analysis for the experimental results
以波長為10 . 6 m的co _ 2激光為光源，進行hgcdte （ pc 、 pv ）光電探測器的激光輻照實驗研究，發現探測器對于波段外輻照激光的響應與其對波段內輻照激光的響應大不相同，這種波段外激光的輻照足以對探測器造成很強的干擾。 -
With the development of science and technology, more and more oxide crystals are synthesized by more and more advanced technique, the new oxide crystals are incessantly synthesized and the new characters of oxide crystals are incessantly founded. corundum dopped with impurity not only is cherished because of it ' s beautiful appearance, but also is used in the fields such as electrotechnics, mechanism, laser, the optic apparatus and the underlay of semiconductor. sapphire dopped with ti3 + is the best material of the tunable solid laser. zno crystal is material of the direct gap semiconductor ( the width of forbidden band : 3. 37ev ). the excited emission in zno crystal at room temperature has been found, so the ultraviolet luminescence in zno semiconductor can be acquired at room temperature
含有少量雜質的剛玉晶體（ - al _ 2o _ 3 ）不僅由於其色澤艷麗成為人們珍愛的名貴寶石，而且由於它具有的優異性能，被廣泛應用於電工、機械、激光器，光學器件和半導體襯底材料。鈦藍寶石是目前最優異的固體寬帶調諧激光材料，用於製作飛秒脈沖可調諧激光器。氧化鋅晶體是直接帶隙寬禁帶半導體材料（禁帶寬度3 . 37ev ） ，現已發現具有室溫下受激發射特性，有可能實現室溫下半導體紫外發光。 -
The laser crystal also presents other attractive features, such as strong and broad absorption band, makes this laser medium to be an excellent candidate for efficient diode pumping without temperature controlling
該晶體可摻入較高濃度的yb離子（ 0 . 5 ? 10 ） ，且不存在濃度猝滅。 -
The laser acquisition, pointing and tracking ( apt ) technology of high precision and large band - width is the key technology of space laser communication
高精度、寬帶寬的激光捕獲、對準和跟蹤技術（簡稱apt ）是空間激光通信的一個關鍵技術。 -
Narrow - band ir laser reflector
窄帶紅外激光反射器 -
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 -
It has a broader absorption band at 808 nm which is emitted by laser diode ( ld ). therefore, nd : cngg is suitable for ld pumping, the ld pumped all solid - state lasers can be made by using nd : cngg. in this study, nd : cngg single crystals of 25mm in diameter and above 80mm in length were successfully grown by the automatically pulling method from the melt
摻釹鈣鈮鎵石榴石（簡稱nd : cngg ）是一種新型激光晶體，該晶體熔點低（ 1470 ） ，具有無序結構，在通用的808nm半導體激光二極體（ ld ）發射波長區有寬吸收帶，因此很適合ld泵浦，可做成ld泵浦全固態激光器。 -
An experimental system of 1. 55um - band external - cavity diode laser system with more than 50nm mode - hop free tunable range is reported. 3
55 m大范圍無跳模調諧外腔半導體檄光器實驗系統，實現了大於50nm的無跳模調諧輸出。 -
In an age of stale uninspiring music, without digital music storage or laser lights, a band called " the eagles " with their straightforward rhythm and sincere emotion used the simplest style to deliver their music
在那個音樂飄搖的年代，沒有數字元素和鐳射光效，一支名為「老鷹」的合唱團，憑借著率性的節奏與真實的感性，用最簡單的方式傳遞著音樂。 -
The thermovision 2000s long - wave, narrow band qwip 320 x 240 fpa delivers high thermal sensitivity in both warm and cold climates and makes the system resistant to existing laser
Thermovision 2000採用320 x 240像素長波窄波段的焦平面的探測器。在溫暖和寒冷的天氣下具有很高的熱靈敏度，確保系統能夠抵抗現有的激光攻擊性武器。 -
As the key component of multiplexer / demultiplexer, optical filter technology has been fueling great interest with the emergence of wide range tunable laser source, all - wave fiber, and wide band optical amplifiers, which is promoting dwdm to a leading edge of optical fiber communication
隨著寬可調諧激光光源、全波光纖和超寬帶光放大器的出現，密集波分復用日益成為光纖通信的主流技術，作為復用/解復用器核心的光濾波技術備受關注。 -
Zinc oxide as a wide band - gap ( 3. 3ev ) compound semiconductor with wurtzite crystal structure, is gaining importance for the possible application as a semiconductor laser, due to its ultraviolet emission at room temperature
寬禁帶zno半導體為直接帶隙材料，具有六方結構，較高的激子束縛能（ 60mev ） ，室溫下帶隙寬度為3 . 3ev 。 -
Based on the requirement and target of the projects, firstly, pcf bragg grating are investigated theoretically and experimentally. moreover, the effects of filling high refractive index material ( nematic liquid crystal, nlc ) in pcfs on the transmission mechanism and propagation properties are studied by using plane - wave method and finite - element method ( fem ), farther, several novel pcfs are proposed and designed. lastly, we propose and demonstrate a clad - pumped er3 + / yb3 + - codoped fiber laser, which integrate all performances of broad - band tunable wavelength, uniform output power spectrum, high repeat frequency and high average power to together
本論文選題于國家973 、 863以及國家自然科學基金等項目，結合課題的要求和主要目標，在對光子晶體光纖（ pcfs ）傳輸特性研究的基礎上，首先對光子晶體光纖光柵進行了理論和實驗研究;然後，採用平面波展開法和有限單元法分析了在光纖的空氣孔中填充高折射率液晶對光纖傳導機制和傳輸特性的影響，提出並設計了幾種新型光子晶體光纖;最後，提出並研製成功連續可調諧、輸出功率譜均衡的全光纖化、高功率包層泵浦鉺鐿共摻光纖激光器實驗樣機。 -
The first ytterbium - doped yttrium - aluminum garnet ( yb : yag ) laser action was reported back in 1965 using a lamp - pumped rod at 77 k. because of poor spectral overlap of the lamp with the the trivalent ytterbium ion ( yb3 + ) absorption band, the efficiency was very low. lamp - pumped nd : yag lasers fared better due to the multiple pump bands of neodymium
但yb3 +離子的泵浦吸收帶與閃光燈光譜匹配很差，導致其激光效率很低;而nd : yag的激活離子（ nd3 + ）有多個泵浦帶與閃光燈光譜匹配，較好適應了燈泵浦的需要，長期占據了固體激光器的主導地位。 -
Furthermore, as the high - power co2 laser is widely used, especially the development of the research on co2 laser propagating in atmosphere and window material in infrared band, the research on the surface thermal distortion in optical thin film irradiated by 10. 6 m laser is more and more important
而且，隨著高功率co _ 2激光器應用的日益廣泛，特別是國內外有關co _ 2激光大氣傳輸研究工作的進展以及紅外波段窗口材料的研究，使10 . 6 m激光輻照下光學薄膜熱畸變和微弱吸收研究具有重要意義。 -
At the same time, the possibility of using nonlinear optics in widening the detecting wave band of hartmann - shack wavefront sensor is exploringly discussed. adaptive optics guarantees the beam quality of laser projecting system. beam cleanup, atmospheric turbulence compensation and correction of any disturbance and fabrication error in the light way are required to promise a near diffraction beam, but normal adaptive optics system can only correction one of them
自適應光學進行光束大氣傳輸波前畸變校正時，要求系統必須能進行光束凈化和校正大氣湍流造成的波前畸變，並且能夠同時有效地克服發射系統製造誤差、重力變形以及光路內部氣體擾動的影響，得到接近衍射極限的輸出激光光束。 -
This thesis describes some work on improving the performance of lasers, which i have carried out during the past three years. follows are the main points : 1. both littrow and littman set - up of 800nm - band external - cavity diode laser systems are studied
本論文本著追蹤發展、面向應用、有所創新的原則，在改善激光器性能方面做了一些工作，主要包括： （ 1 ）對800nm波段littrow和littman結構的弱耦合可調諧外腔半導體激光器進行了實驗研究。 -
Thirdly, we developed a spectrometer for spectrum diagnosis of soft x - ray pulse sources, and used it to measure spectra of liquid o2, co2, cf4, kr and xe spray target lpp sources in 6 - 20nm band for 8x 10uw / cm2 laser irradiance the results coincide with cowan calculation fairly well
其次，利用低溫製冷技術研製出一臺可連續控溫的液體微滴噴射靶lpp光源。光源具有連續和脈沖噴射兩種工作模式，能使用多種氣?液相變溫度高於液氮溫度的非腐蝕性氣體工作。
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