Noise of strongly-multimode laser diodes used in interferometric systems

Journal Article · Thu Mar 01 04:00:00 EST 1990 · IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (USA)

DOI:https://doi.org/10.1109/3.52118· OSTI ID:6814078

Wentworth, R H ^[1]

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1. AT and T Bell Labs., Holmdel, NJ (USA)

A unified model of the phase and partition noise of a multimode semiconductor injection laser is presented in the context of the assumption that all modes radiate the same average optical power. Noise is shown to be associated with two processes: phase fluctuations common to all modes, arising from carrier fluctuations; and partition and phase fluctuations describable in terms of a random walk of the optical field state on the surface of an abstract sphere. Both processes are driven by spontaneous emission. The model is solved analytically; results are derived for the intensity noise level to be expected at the output of an unbalanced interferometer illuminated by a multimode diode laser. These predictions are confirmed experimentally using a laser with nine modes at full width half maximum.

• OSTI ID: 6814078
• Journal Information: IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (USA), Journal Name: IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (USA) Vol. 26:3; ISSN 0018-9197; ISSN IEJQA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
440600 -- Optical Instrumentation-- (1990-)
47 OTHER INSTRUMENTATION
ANALYTICAL SOLUTION
CARRIER MOBILITY
EMISSION SPECTRA
INTERFEROMETRY
LASERS
MOBILITY
MODE SELECTION
NOISE
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SEMICONDUCTOR LASERS
SOLID STATE LASERS
SPECTRA