激光技术
激光技術
격광기술
LASER TECHNOLOGY
2015年
4期
515-519
,共5页
激光器%正交光注入%偏振开关%偏振双稳
激光器%正交光註入%偏振開關%偏振雙穩
격광기%정교광주입%편진개관%편진쌍은
lasers%orthogonal optical injection%polarization switching%polarization bistability
为了研究垂直腔面发射激光器偏振转换特性，基于自旋反转模型，数值研究了正交光注入下1550nm垂直腔面发射激光器频率诱导偏振开关及双稳特性。结果表明，在正交光注入下，连续改变注入光与激光器光场内x线性极化模的频率失谐可诱导产生两类偏振开关和偏振双稳现象，且注入光强与偏振电流的变化都显著影响双稳宽度和激光器的输出特性；合理选择操作条件，可实现对1550nm垂直腔面发射激光器频率诱导偏振开关及双稳的控制。这一结果对垂直腔面发射激光器在全光开关和全光存储等领域的应用具有参考价值。
為瞭研究垂直腔麵髮射激光器偏振轉換特性，基于自鏇反轉模型，數值研究瞭正交光註入下1550nm垂直腔麵髮射激光器頻率誘導偏振開關及雙穩特性。結果錶明，在正交光註入下，連續改變註入光與激光器光場內x線性極化模的頻率失諧可誘導產生兩類偏振開關和偏振雙穩現象，且註入光彊與偏振電流的變化都顯著影響雙穩寬度和激光器的輸齣特性；閤理選擇操作條件，可實現對1550nm垂直腔麵髮射激光器頻率誘導偏振開關及雙穩的控製。這一結果對垂直腔麵髮射激光器在全光開關和全光存儲等領域的應用具有參攷價值。
위료연구수직강면발사격광기편진전환특성，기우자선반전모형，수치연구료정교광주입하1550nm수직강면발사격광기빈솔유도편진개관급쌍은특성。결과표명，재정교광주입하，련속개변주입광여격광기광장내x선성겁화모적빈솔실해가유도산생량류편진개관화편진쌍은현상，차주입광강여편진전류적변화도현저영향쌍은관도화격광기적수출특성；합리선택조작조건，가실현대1550nm수직강면발사격광기빈솔유도편진개관급쌍은적공제。저일결과대수직강면발사격광기재전광개관화전광존저등영역적응용구유삼고개치。
To study the polarized conversion characteristics of vertical cavity surface emitting lasers ( VCSEL ) , frequency-induced polarization switching ( PS) and polarization bistability ( PB) of 1550nm VCSEL subject to orthogonal optical injection were investigated numerically by adopting extended spin -flip model.The results show that under orthogonal optical injection , PS and PB can be achieved through varying the frequency detuning between the injected field and the x linearly polarized mode in VCSEL consecutively .Furthermore, the variation of injection power and bias current have strong effects on PB width and VCSEL output emission .The controlling of frequency-induced PS and PB in a 1550nm VCSEL can be realized with appropriate selection of operating conditions .This study has reference value for the application of VCSEL in all-optical switching and all-optical memory .
