On the noise-amplifier model of the laser

On the noise-amplifier model of the laser

When the relaxation of the pumping process in a laser is slow, the gain saturation does not follow the fluctuation of the field amplitude instantaneously. Then the noise-amplifier model of the laser can be valid even at and above threshold. Assuming a Lorentzian line shape, we derive the linewidth f...

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Veröffentlicht in:IEEE J. Quant. Electron.; (United States) 1984-12, Vol.20 (12), p.1319-1323
1. Verfasser: Ujihara, K.
Format: Artikel
Sprache:eng
Schlagworte:
420300 - Engineering- Lasers- (-1989)
AMPLIFICATION
AMPLIFIERS
AMPLITUDES
Atomic beams
CALCULATION METHODS
ELECTRONIC EQUIPMENT
ENGINEERING
Equations
Exact sciences and technology
FLUCTUATIONS
Fundamental areas of phenomenology (including applications)
GAIN
General laser theory
Laser modes
Laser noise
Laser theory
LASERS
LINE WIDTHS
NOISE
Noise shaping
OPTICAL PUMPING
Optics
Physics
Pump lasers
PUMPING
RELAXATION
Semiconductor device noise
Semiconductor lasers
VARIATIONS
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Beschreibung
Zusammenfassung:When the relaxation of the pumping process in a laser is slow, the gain saturation does not follow the fluctuation of the field amplitude instantaneously. Then the noise-amplifier model of the laser can be valid even at and above threshold. Assuming a Lorentzian line shape, we derive the linewidth formula for such a laser and show that a necessary condition for the validity of the model is to have a small saturation parameter.
ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.1984.1072342