外腔锁相二极管激光列阵的超模
Super mode of diodelaser arrays phase-locked in an external cavity
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摘要: 利用耦合理论推导了通过外腔反馈实现锁相运行的激光二极管列阵所满足的本征值方程。在忽略非相邻单元间耦合的串联运行方式下，解析求解了包括端面反射的列阵方程的本征值。求出了各阶超模的近场分布，并得到了考虑单个发光单元影响时的远场分布，具体为：当列阵运行于基超模时，近场各个单元间的光场同相，在远场中心位置出现光强主极大；而在其它高阶模式，近场各个单元间光场不同相，远场光强主极大出现在中心位置两侧；远场总体受到单个发光单元近场分布函数的调制。Abstract: Couple-mode analysis can describe the output field of the phase-locked diodelaser arrays (DLA) in an external cavity. The eigenvalue equation for a phase-locked DLA has been deduced, the corresponding eigenvalues and eigenvectors have been get analytically. Furthermore, the near-field distributions and the farfield patterns are presented for various supermode, when the elements influence are individually taken into account．
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Key words:
- diode-laser array /
- external cavity /
- phase-locking /
- super-mode
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