Diode pumped solid - state q - switched laser is a good source of pulse laser with high peak power and high repetition rate 而ld泵浦的固體調q激光器是產生高峰值功率脈沖激光的優質光源。
Cr + : yag as absorber is a very small device , so it is very simple and convenient , which suits to small - sized passively q - switched lasers 它作為一種即插即用型被動調q元件,簡單、方便,非常適合激光器的小型化。
We have researched the theory and experiment on q - switch lasers based on high power diode end - pumped nd : yag crystal to suit the requirement of photoelectric resisting 我們針對光電對抗的應用要求對大功率ld泵浦的調qnd : yag激光器進行了相當深入的研究。
Laser - diode ( ld ) pumped passive q - switched laser can supply this kind of pulses and have the advantages of simplicity , compactness , high efficiency and low cost 激光二極管( ld )泵浦的被動調q激光器能夠提供這種脈沖,而且具有結構緊湊、效率高、價格便宜等優點。
( 3 ) without driving signal , all fiber q - switched lasers can achieve self q - switched pulse , measuring the effect of different pumped power to self q - switched and giving reasonable theory analysis ( 3 )全光纖調q激光器,在沒有驅動信號的情況下,得到自調q脈沖,測量了在不同泵浦功率條件下對自調q現象的影響,并從理論上給予了合理的分析。
Diode pumped solid state lasers ( dpssl ) have become the central focus of the field of lasers due to their many advantages such as high efficiency , stability , good quality of light beam , compactness , long time and etc . diode - pumped passively q - switched laser is much efficient to obtain narrow pulse width and high peak power 激光二極管泵浦的全固態激光器( diodepumpedsolidstatelasers , dpssl )具有效率高、穩定性好、光束質量好、結構緊湊、壽命長等優點。
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,對二極管泵浦的自調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。
With the theoretical and experimental methods , the characters of cr4 + : yag are studied from cr4 + : yag as passive q - switching in nd : yag laser , intracavity frequency - doubling of q - switching laser and dual - wavelength laser , which is based on cr4 + : yag ' s operations of saturable absorption and laser gaining medium . chapter 1 : introducing the cr4 + : yag ' s optical function , the general research situation and the main idea of this thesis 本論文基于cr ~ ( 4 + ) yag晶體既可以作為nd yag激光器的被動調q開關、又可以作為激光增益介質的特點,采用理論和實驗相結合的研究方法,詳細而具體的研究了cr ~ ( 4 + ) yag晶體被動調q 、調q倍頻和雙波長激光輸出的特性。
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布近似,獨立地導出描述二極管泵浦內腔倍頻-被動調q激光器的速率方程,并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,并對實驗結果進行了分析。