The FM noise and AM noise of a negative frequency feedback (NFFB) semiconductor laser(LD)are presented. The FM noise (linewidth)can be reduced greatly by NFFB technique under proper conditions.
本文用半经典理论研究了负频反馈（NFFB）半导体激光器的FM和AM噪声。在适当的条件下，FM噪声（线宽）可用NFFB技术得到极大的抑制。
The linewidth of an external cavity semiconductor laser(LD) is presented quantum-mechanically. The best feedback conditions are given for the suppression of LD linewidth.
本文用量子力学的方法求得了外腔半导体激光器（LD）的线宽，给出了抑制LD线宽的最佳反馈条件。
The linewidth of an external cavity semiconductor laser(LD) is presented quantum-mechanically. The best feedback conditions are given for the suppression of LD linewidth.
本文用量子力学的方法求得了外腔半导体激光器（LD）的线宽，给出了抑制LD线宽的最佳反馈条件。
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