量子光学学报
量子光學學報
양자광학학보
ACTA SINICA QUANTUM OPTICA
2008年
1期
93-96
,共4页
非线性光学%量子阱%密度矩阵近似%电光效应
非線性光學%量子阱%密度矩陣近似%電光效應
비선성광학%양자정%밀도구진근사%전광효응
Nonlinear optics%Quantum wells%Density matrix approach%Electro-optical effects
利用量子力学中密度矩阵方法研究了加偏置电场的量子阱中电光效应的解析表达式,并以典型的GaAs量子阱为例进行了数值计算.研究结果表明,电光效应随偏置电场的增大和阱宽的减小而增强,通过调节阱宽和偏置电场的强度,在该系统中可以获得一个大的电光效应系数.
利用量子力學中密度矩陣方法研究瞭加偏置電場的量子阱中電光效應的解析錶達式,併以典型的GaAs量子阱為例進行瞭數值計算.研究結果錶明,電光效應隨偏置電場的增大和阱寬的減小而增彊,通過調節阱寬和偏置電場的彊度,在該繫統中可以穫得一箇大的電光效應繫數.
이용양자역학중밀도구진방법연구료가편치전장적양자정중전광효응적해석표체식,병이전형적GaAs양자정위례진행료수치계산.연구결과표명,전광효응수편치전장적증대화정관적감소이증강,통과조절정관화편치전장적강도,재해계통중가이획득일개대적전광효응계수.
By using the compact density matrix approach and the iterative methods, the electro-optical effects in e-lectric-field biased quantum wells have been theoretically investigated. Numerical result shows that the electro-optical effects increase with the enhancement of the applied electric field F and the well width decrease. A large electro-opti-cal effect can he obtained by adjusting the well width L and the applied field F.
