激光与红外
激光與紅外
격광여홍외
LASER & INFRARED
2015年
5期
509-513
,共5页
环形光路%脉冲展宽%纳秒激光
環形光路%脈遲展寬%納秒激光
배형광로%맥충전관%납초격광
ring optical path%pulse broadening%nanosecond laser
从理论上分析了影响激光脉冲宽度的因素，建立了脉冲展宽与各影响因素之间的数学模型。通过 Matlab 软件模拟分析了不同因素对脉冲展宽的影响，分析得出在一定条件下，脉冲展宽效果最佳时分束镜反射率 R ＝0.38，光学腔长 L ＝940 cm。对 Nd ∶YAG 脉冲激光器纳秒激光进行了脉冲展宽实验，测试了脉冲宽度随着泵浦电压的变化情况。选取了泵浦电压为730 V，分束镜 R 为0.38，在初始脉宽为37 ns 的条件下通过改变腔长将激光脉冲分别展宽到37.5 ns，42 ns 和55 ns，实验数据与理论分析的误差分别0.98％，0.74％和2.1％。实验数据分析验证了建立的数学模型是可行的。
從理論上分析瞭影響激光脈遲寬度的因素，建立瞭脈遲展寬與各影響因素之間的數學模型。通過 Matlab 軟件模擬分析瞭不同因素對脈遲展寬的影響，分析得齣在一定條件下，脈遲展寬效果最佳時分束鏡反射率 R ＝0.38，光學腔長 L ＝940 cm。對 Nd ∶YAG 脈遲激光器納秒激光進行瞭脈遲展寬實驗，測試瞭脈遲寬度隨著泵浦電壓的變化情況。選取瞭泵浦電壓為730 V，分束鏡 R 為0.38，在初始脈寬為37 ns 的條件下通過改變腔長將激光脈遲分彆展寬到37.5 ns，42 ns 和55 ns，實驗數據與理論分析的誤差分彆0.98％，0.74％和2.1％。實驗數據分析驗證瞭建立的數學模型是可行的。
종이론상분석료영향격광맥충관도적인소，건립료맥충전관여각영향인소지간적수학모형。통과 Matlab 연건모의분석료불동인소대맥충전관적영향，분석득출재일정조건하，맥충전관효과최가시분속경반사솔 R ＝0.38，광학강장 L ＝940 cm。대 Nd ∶YAG 맥충격광기납초격광진행료맥충전관실험，측시료맥충관도수착빙포전압적변화정황。선취료빙포전압위730 V，분속경 R 위0.38，재초시맥관위37 ns 적조건하통과개변강장장격광맥충분별전관도37.5 ns，42 ns 화55 ns，실험수거여이론분석적오차분별0.98％，0.74％화2.1％。실험수거분석험증료건립적수학모형시가행적。
Through the analysis of the factors that affect the laser pulse width,the mathematical model between the pulse broadening and its influence factors was established.The influence of different factors on pulse broadening was analyzed with Matlab.When the pulse broadening effect is the best under certain conditions,the reflectivity of beam splitter is 0.38,and optical cavity length is 940cm.The pulse broadening experiments were carried out for Nd:YAG nanosecond pulse Q -switch laser,and pulse width changes with the pump voltage were measured.Pulse width was broaden from 37ns to 37.5ns,42ns and 55ns by changing the optical cavity length when the pump voltage is 730V and the reflectivity of beam splitter is 0.38.Errors of experimental data and theoretical analysis are respectively 0.98%, 0.74% and 2.1 %.It is feasible to establish the mathematical model by analyzing experimental data.
