Temporal and spatial walk - off for ultra - short mid - infrared optical parametric amplification 超短中紅外參量放大過程的時空走離特性
At present , ktp has been widely used in second harmonic generation ( shg ) , sum ( difference ) - frequency mixing , optical parametric oscillators ( opo ) and optical parametric amplification ( opa ) 目前, ktp已作為一種商業(yè)化的晶體廣泛應用于中小功率固體激光器的倍頻( shg ) 、和(差)頻、光參量振蕩( opo )和放大( opa )等。
From three - wave coupling equations , the optimal crystal length , conversion efficiency and parametric light pulse width are computed numerically when clbo is used in picosecond optical parametric amplification . the results present that clbo are suited for optical parametric amplification in short wave band . in order to get higher conversion efficiency , the crystal length should be optimized according to the intensities of pump and signal waves 從三波耦合方程出發(fā),對clbo用于皮秒級光參量放大時,最佳晶體長度、轉(zhuǎn)換效率和參量光的脈沖寬度進行了理論分析和數(shù)值模擬,結(jié)果表明clbo晶體適合在短波范圍作光參量放大,為達到高的轉(zhuǎn)換效率和窄脈寬的信號光輸出,泵浦光和初始入射信號光的強度應根據(jù)晶體長度取最優(yōu)化值。