single frequency laser 中文意思是什麼
single frequency laser
解釋
單頻激光器-
1. ) designing and completing the all - solid - state blue laser of single - frequency operation
1 ）設計完成了全固化單頻藍光激光器。 -
Abstract : in view of the crystal structure, this paper repo rts thecharacter of single crystal growth of germanate and the properties as me dium of laser crystal. the study and progress in germanate crystals used as widel y tunable laser crystal, self - doubling - frequency crystal and highly efficient and low pumping threshold laser crystal are introduced
文摘:從晶體結構上分析了鍺酸鹽的單晶生長和作為激光晶體基質的特點，並介紹了鍺酸鹽作為可調諧激光晶體，自倍頻晶體，高轉換效率和低泵浦閾值的激光晶體的研究及進展。 -
The stability output second harmonic generation ( shg ) experiment results of single - longitudinal mode and multi - longitudinal mode with long cavity were explained reasonably with these rate equations. the high polarization of fundamental wave in the isotropic laser media nd : yag with type - i critical phase - matching lbo was studied with the rate equations including polarization of fundamental light. using the polarization function of lbo, a quartz full - wave plate was introduced into the cavity, a kind of birefringent filter by considering the combination of the polarization function of the type - i critical phase - matching doubling frequency crystal lbo and the quartz whole - wave plate was constructed
將腔內多縱模倍頻速率方程推廣應用到準三能級藍光激光器中，分析了一個縱模、兩個縱模、多個縱模時的噪聲情況，合理地解釋了實驗中激光器單縱模運轉以及長腔多縱模運轉時穩定輸出的實驗現象，同時利用該速率方程分析了以各向同性激光晶體nd : yag為工作物質，類臨界相位匹配lbo為倍頻晶體的藍光激光器中基頻光偏振特性，合理利用類臨界相位匹配lbo倍頻晶體的偏振特性與引入的石英晶體全波片構成雙折射濾光片，通過選單頻來抑制噪聲，獲得了藍光低噪聲的穩定輸出。 -
Stable single - frequency and linear - polarization erbium doped fiber ring laser
窄線寬單頻線偏振摻鉺光纖環形腔激光器 -
Laser - diode end - pumped solid - state laser has many advantages, including high efficiency, good beam quality, high frequency stability, narrow line width, long lifetime, compact configuration, convenient for using et al. especially, single - frequency solid - state laser sources are required for many fields of fundamental research and scientific application, such as gravity - wave detection, coherent laser radar, coherent communication and fiber sensing
激光二極體泵浦的固體激光器具有全固態、小型化、效率高、使用方便等優點而受大家的廣泛關注，尤其是實現單頻運轉的全固態激光器以其優良的頻率特性和輸出功率穩定性可廣泛應用在相干信息處理、頻率計量、量子光學、引力波測量和量子信息等研究領域。 -
The position errors are measured by two dimension single - frequency laser interferometer, the pitch and yaw errors are tested using phase shifting interferometer with a resolution of 0. 1nm, the linearity along motion axis is investigated by autocollimator with 0. 01 " uncertainty
利用單頻激光干涉儀測試其運動定位誤差特性，相位偏移干涉法測試運動轉角誤差，光電自準儀測試其運動偏擺誤差。 -
Comparing with the traditional phase - shifted laser range finder, the method could implement the ranging with multifrequency by using single modulated frequency. it could not only solve the contradiction of the range and the precision, but has high degree of accuracy and wide range, simplify the hardware design, and reduce the cost. this paper introduced the theory of phase distance measurement, analyzed various testing methods and expatiated the hardware and the software for the proposal system
與傳統的相位法測距相比，本方法使用單調制頻率實現了多頻測距，有效地解決了相位法測距中測程與測量精度之間的矛盾，具有高精度、大量程、大噪聲容限的特點，而且簡化了硬體設計，降低了成本；其次在數據處理中採用數據加窗函數的方法，提高了方波信號的頻譜解析度，進而提高了測量的精度。 -
The second harmonic produced by a q - switched nd : yag laser with wavelength e = 532 nanometers ( nm ), pulse width 0 nanoseconds ( ns ) and repetition frequency i = 1 hz was used to bombard a highly pure solid hexagonal bn ( h - bn ) target ( 96 % ), with diameter of 2cm. in a vacuum chamber, boron nitride ( bn ) film was deposited on the single - crystal silicon substrate
利用高能脈沖激光（波長= 532nm ，頻率= 1赫茲，脈寬= 10納秒）在常溫下轟擊燒結的高純六方氮化硼（ h - bn ）靶，在真空反應室中將bn薄膜沉積在單晶硅基底上。 -
The self - q - switched pulses of high erbium - doped fabry - perot cavity fiber laser are observed and theoretically analyzed. ( 2 ). utilizing the non - linearity characteristics of single mode fiber - back stimulated brillouin scattering ( bsbs ) and the wavelength - selecting characteristics of fiber gratings, self - q - switched pulses are achieved from a linear cavity erbium - doped fiber laser pumping by a 980nm ld continue wave ( cw ) pumping, the pulse width is 2. 2ns and the repetition frequency of pulses is 64. 5mhz
（ 2 ）利用單模光纖的非線性效應背向受激布里淵散射（ bsbs ）和光纖光柵的選頻特性，採用980nm半導體激光器連續泵浦方式，在線性腔摻鉺光纖激光器中實現了自調q運轉，獲得脈沖寬度（ fwhm ）約為2 . 2ns ，重復頻率為64 . 5mhz的穩定的光脈沖輸出。 -
3. ) designing and completing the cw yvo4 / ktp laser of the whole cavity with watt level. and obtaining the 1. 3w green laser of single - frequency operation, the fluctuations of the laser ' s power is less than 1. 5 % ( 3 hour ), when the laser is free running
3 ）試制了整體腔瓦級連續單頻綠光激光器，獲得1 . 3w穩定的單頻綠光輸出，單頻綠光激光器的長期功率穩定度小於1 . 5 （ 3小時） 。 -
39 % of total conversion efficiency at pump level of 600mw 858nm is obtained experimentaily with our single - resonant, external ring frequency - doubler pumped by tr. sapphite laser at room temperature ( about 21. 50c ). the conversion efficiency is seriously limited by what is called " blura " ( blue light induced infrared absorption ) and thermal effects. yet, up to 137 mw of cw blue light at 429nm at pump level of 565 mw has been achieved and stabilized over a hour when the cavity is locked via pound - drever - hall ( pdh ) technique
泵浦功率為600mw時，由於兩種效應「藍光導致紅外吸收（ bliira ） 」和「熱效應（ thermaleffects ） 」的嚴重影響，室溫下（約21 . 5 ）獲得了39的倍頻轉換效率；採用邊帶鎖頻技術， 565mw的泵浦光獲得137mw的藍光輸出，在沒有外界強烈的干擾下可以鎖定1小時以上而不失鎖。 -
Chapter three, optimal designing of high power single - frequency nd : yvo4 laser cavity
第三章：高功率單頻nd ： yvo _ 4激光器諧振腔的設計。 -
According to the above theoretical analysis, a high power single - frequency nd : yvo4 laser cavity is designed
在本章中，根據理論分析的結果設計了高功率單頻nd ： yvo _ 4激光器的諧振腔。 -
It has been presented in this dissertation that using model of q modulated er - glass laser, through replacing typical number of er - doped fiber and single mode fiber into the model, then the theoretical model of self - q - switching by sbs was established. by emulating experiment, the peak value of output power, repeating frequency, width of pulse have been calculated. the data was calculated repeatedly when the length of er - doped fiber changing
將摻鉺光纖和單模光纖的典型值數據代入該模型中，進行模擬實驗研究得出sbs自調q光纖激光器輸出峰值功率、脈寬、重頻等數據，並在改變摻鉺光纖長度的情況下，再次進行模擬實驗，對上述輸出結果進行了分析。 -
As a method to obtain higher sbs reflectivity by improving the monochromaticity of laser system, the ld end - pumped pulse - microchip laser operated on high - repetition and single - frequency has also been researched. in section v, we revised the previous theoretical model for passive - q - switched laser using cr4 + : nd3 + : yag by introducing the space dependence between the photons and inversion populations in microchip resonator
由於泵浦激光的線寬對sbs反射率有顯著影響，而利用單縱模、高重復頻率運轉的脈沖微片激光器作為dpl系統種子光源來提高激光系統單色性是一種可行的技術方案。 -
In the experiment, we make the curve of the relation of the output light ' s polarization direction and pump light ' s polarization direction. and the result is 8 : 1 of the output light ' s polarization rate, when the pump light is linear polarization. using the above analysis. we design the blue laser of single - frequency operation
測量了輸出激光偏振方向隨泵浦光偏振方向變化的關系曲線，得出用線偏振光泵浦時輸出激光的偏振度大約為8 ： 1 ，加類位相匹配的倍頻晶體后，基頻光的偏振度大於150 ： 1 。 -
The frequency shift is less than 150mhz in one minute when the laser is free running. we provide a theoretical and experimental basis for improving characteristic of high power single - frequency lasers in the future work
從理論與實驗兩方面分析了如何在高泵浦功率下使激光器實現穩定高效的單頻運轉，為高功率連續單頻激光器的優化設計提供了理論與實驗依據。 -
Experiments have demonstrated that, under the condition of constant temperature ( 20 ), the frequency error of double - frequency laser interferometer with two longitudinal modes could be controlled within 10 " 9 even with conditions such as with cool or hot air blowing, it can still be kept within 10 " 7. self - organised fuzzy control methods can be realised in a single - chip processor which contains fuzzy optimisation and self - organisation functions. the above - mentioned system possesses the following advantages : simple
/ znl （式中c為光速， l為諧振腔長， n為空氣折射率，其值約790mhz ） ，原理上對目前可能要求的測量速度都能滿足;它發出的光為一對互相垂直的線偏振光，與塞曼型雙頻激光干涉儀相比，它不用外加軸向磁場及1 / 4波片，因此結構簡單，造價低廉。
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