Pattern of mutual relationships among parameters determining operation of laser diode amplifier

Fedor Srobar

doi:10.1117/12.373641

29 December 1999 Pattern of mutual relationships among parameters determining operation of laser diode amplifier

Fedor Srobar

Proceedings Volume 4016, Photonics, Devices, and Systems; (1999) https://doi.org/10.1117/12.373641
Event: Photonics Prague '99, 1999, Prague, Czech Republic

Abstract

Topological structure of the mathematical models of the laser diode amplifier (LDA) can be visualized with the help of a diagrammatic method based on depicting differential relationships of the form (delta) y equals t_xy(delta) x by the diagram x yields y. The quantity t_xy is called the transmission function of the oriented line xy. Such atomic diagrams can be combined to more involved schemes to represent systems of mathematic formulas. The approach is demonstrated on the LDA model proposed by Adams. The diagram representing this model is derived and shown to contain two closed oriented paths - feedback loops. The transmission function of these loops are shown to have a controlling influence on the qualitative operation mode of the LDA. In particular, if their sum crosses the unity level in two distinct states, the LDA acts as a bistable element. This condition can be expressed in terms of the numeric values of the characteristics parameters such as the driving electric current, facet reflectivities, resonator length, etc.

Citation Download Citation

Fedor Srobar "Pattern of mutual relationships among parameters determining operation of laser diode amplifier", Proc. SPIE 4016, Photonics, Devices, and Systems, (29 December 1999); https://doi.org/10.1117/12.373641

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