光子学报
光子學報
광자학보
ACTA PHOTONICA SINICA
2010年
8期
1519-1523
,共5页
AlGaN/GaN%量子级联激光器%界面%受限%散射率
AlGaN/GaN%量子級聯激光器%界麵%受限%散射率
AlGaN/GaN%양자급련격광기%계면%수한%산사솔
AlGaN/GaN%QCL%interface%confined%scattering rate
利用传输矩阵方法对纤锌矿型量子级联激光器有源区的界面与受限声子进行了研究.计算结果显示:在纵光学频域有一组界面声子与二组受限声子存在,而且最低频率的两个界面声子在一定条件下能转变为受限模式.通过比较界面声子与受限声子的色散及声子势发现两者有很大不同,且计算电声散射速率可以发现由这两种声子引起的散射率是可比拟的.
利用傳輸矩陣方法對纖鋅礦型量子級聯激光器有源區的界麵與受限聲子進行瞭研究.計算結果顯示:在縱光學頻域有一組界麵聲子與二組受限聲子存在,而且最低頻率的兩箇界麵聲子在一定條件下能轉變為受限模式.通過比較界麵聲子與受限聲子的色散及聲子勢髮現兩者有很大不同,且計算電聲散射速率可以髮現由這兩種聲子引起的散射率是可比擬的.
이용전수구진방법대섬자광형양자급련격광기유원구적계면여수한성자진행료연구.계산결과현시:재종광학빈역유일조계면성자여이조수한성자존재,이차최저빈솔적량개계면성자재일정조건하능전변위수한모식.통과비교계면성자여수한성자적색산급성자세발현량자유흔대불동,차계산전성산사속솔가이발현유저량충성자인기적산사솔시가비의적.
The interface and confined phonon modes of the wurtzite quantum cascade laser are investigated using the transfer-matrix method.One group of interface modes and two groups of confined modes are presented in the longitudinal optical frequency domain,and the interface modes can be transited into the confined modes for two lowest frequency modes.The dispersions and electronic potentials of the interface and confined modes are obviously different,and the scattering rate induced by the confined mode is comparable to that induced by the interface mode.
