Supermodes of high-repetition-rate passively mode-locked semiconductor lasers

We present a steady-state analysis of high-repetition-rate passively mode-locked semiconductor lasers. The analysis includes effects of amplitude-to-phase coupling in both gain and absorber sections. A many-mode eigenvalue approach is presented to obtain supermode solutions. Using a nearest-neighbor...

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Bibliographic Details
Published in:IEEE journal of quantum electronics 1996-06, Vol.32 (6), p.941-952, Article 941
Main Authors: Salvatore, R.A., Sanders, S., Schrans, T., Yariv, A.
Format: Article
Language:English
Subjects:
Chirp
Eigenvalues and eigenfunctions
Exact sciences and technology
Frequency domain analysis
Fundamental areas of phenomenology (including applications)
Laser mode locking
Laser theory
Lasers
Optics
Physics
Pulse generation
Pulse modulation
Semiconductor lasers
Semiconductor lasers
laser diodes
Steady-state
Time domain analysis
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Summary:We present a steady-state analysis of high-repetition-rate passively mode-locked semiconductor lasers. The analysis includes effects of amplitude-to-phase coupling in both gain and absorber sections. A many-mode eigenvalue approach is presented to obtain supermode solutions. Using a nearest-neighbor mode coupling approximation, chirp-free pulse generation and electrically chirp-controlled operation are explained for the first time. The presence of a nonzero alpha parameter is found to change the symmetry of the supermode and significantly reduce the mode-locking range over which the lowest order supermode remains the minimum gain solution. An increase in absorber strength tends to lead to downchirped pulses. The effects of individual laser parameters are considered, and agreement with recent experimental results is discussed.
ISSN:0018-9197
1558-1713
DOI:10.1109/3.502370