A probability-amplitude transfer matrix model for distributed-feedback laser structures

Two different treatments of spontaneous emission in distributed-feedback (DFB) lasers were found in the literature, but adequate explanations for the different treatments were not found. Using an approach that allows comparison of the two different treatments of spontaneous emission, we show that the different treatments can lead to different spectral predictions. The difference in spectral predictions is negligible in Fabry-Perot lasers and index-coupled DFB lasers. However, in truncated-well gain-coupled DFB lasers, the difference between the two treatments is noticeable, and one treatment is markedly better at fitting to data. The treatment that best fits the data is also the treatment that makes sense quantum-mechanically.

[1]  T. Makino,et al.  Amplified spontaneous emission model for quantum-well distributed feedback lasers , 1997 .

[2]  K. Petermann.  Calculated spontaneous emission factor for double-heterostructure injection lasers with gain-induced waveguiding , 1979 .

[3]  T. Makino,et al.  Transfer matrix analysis of the amplified spontaneous emission of DFB semiconductor laser amplifiers , 1988 .

[4]  C. Henry.  Theory of spontaneous emission noise in open resonators and its application to lasers and optical amplifiers , 1986 .

[5]  Quantum Noise Treated with Classical Electrical Network Theory , 1994 .

[6]  G.B. Morrison,et al.  Improving the ability of a distributed feedback laser transfer-matrix model to fit to spectra from distributed-feedback lasers , 2000, IEEE Photonics Technology Letters.

[7]  H. Imai,et al.  Analysis of the spectrum behavior below the threshold in DFB lasers , 1986 .

[8]  S. Hansmann,et al.  Transfer matrix analysis of the spectral properties of complex distributed feedback laser structures , 1992 .

[9]  Shyh Wang,et al.  A new method for the calculation of the emission spectrum of DFB and DBR lasers , 1991 .

[10]  G. Morrison,et al.  Extraction of gain parameters for truncated-well gain-coupled DFB lasers , 1999, IEEE Photonics Technology Letters.

[11]  Maurice Ebison,et al.  Quantum Physics of Atoms, Molecules, Solids, Nuclei and Particles , 1975 .

[12]  T. Makino,et al.  Transfer-matrix formulation of spontaneous emission noise of DFB semiconductor lasers , 1991 .

[13]  Hartmut Hillmer,et al.  Static and dynamic properties of InGaAsP-InP distributed feedback lasers-a detailed comparison between experiment and theory , 1994 .