Mode switching of Fabry-Perot laser diodes
The mode switching process of a Fabry-Perot laser diode with low spontaneous input is analyzed. For understanding the transients, an additional mode competition is required. The analysis of this enhanced mode competition is presented. Its model is based on standing waves of the longitudinal laser modes burning in a spatial carrier corrugation which modulates the gain. Internal reflections by the gain corrugations always fulfill the resonance condition at the wavelength of the mirror resonances. In this way, each laser mode decreases slightly its own losses with increased photon density. With this, the total gain (inclusive of all losses) of the dominant laser mode is increased to a value > 0 during nearly the whole time of the switching process. Therefore, the photon density can increase exponentially in a rise time of about 1 ns.
- Research Organization:
- Institut fur Nachrichtentechnik, Universitat der Bundeswehr Munchen, D-8014 Neubiberg (DE)
- OSTI ID:
- 5824445
- Journal Information:
- IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. 25:8; ISSN IEJQA
- Country of Publication:
- United States
- Language:
- English
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