A new method for the calculation of the emission spectrum of DFB and DBR lasers

Journal Article · Tue Oct 01 04:00:00 EDT 1991 · IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/3.97269· OSTI ID:5761450

Weber, J P; Wang, S ^[1]

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1. California Univ., Berkeley, CA (United States). Dept. of Electrical Engineering and Computer Sciences

This paper reports on a method based on transmission matrices that allows the authors to compute the emission spectrum of arbitrarily complicated semiconductor laser structures below and above threshold. These can include active and passive periodic or uniform sections. As examples, the authors compute the emission spectrum of a normal distributed feedback (DFB) laser, a DFB laser with a {lambda}/4 phase shifter, and a surface-emitting distributed Bragg reflector (DFB) laser. To do that, the authors have extended Petermann's method for calculating the spontaneous emission coupling coefficient to the case of a periodic waveguide. Several previous works have incorrectly treated the coupling of spontaneous emission into a DFB laser. The authors have shown how the spontaneous emission, when treated correctly, can be used to measure the coupling coefficient of the grating in a DFB laser with a {lambda}/4 phase shifter.

• OSTI ID: 5761450
• Journal Information: IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (United States) Vol. 27:10; ISSN 0018-9197; ISSN IEJQA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
BRAGG REFLECTION
CALCULATION METHODS
COUPLING
EMISSION SPECTRA
ENERGY
FEEDBACK
LASERS
MATRICES
PHASE SHIFT
REFLECTION
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SOLID STATE LASERS
SPECTRA
SURFACE PROPERTIES
THRESHOLD ENERGY
WAVEGUIDES