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High frequency intensity noise spectra of axial mode groups in the radiation from CW GaAIAs diode lasers

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Abstract

The dependence of the intrinsic random intensity noise spectrum of the radiation from CW DH GaAIAs diode multimode lasers on optical wavelength has been investigated for the first time in a wide frequency range 30 MHz to 3 GHz. It was generally observed, that a lasing mode which is optically isolated from the rest of the radiation, shows much stronger intensity fluctuations as compared to the fluctuations of the total output, particularly in the frequency range below the intrinsic natural resonance frequency of the laser. The magnitude of the fluctuations decreases when the number of modes in the detected radiation increases. Our experimental results are compared to computer solutions which were obtained with a simple, analytical laser noise model. Good qualitative agreement between theory and experiment is demonstrated.

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Authors and Affiliations

  1. Department of Electronics, Swiss Federal Institute of Technology, Zürich, Switzerland

    H. Jäckel & G. Guekos

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  1. H. Jäckel
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  2. G. Guekos
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Jäckel, H., Guekos, G. High frequency intensity noise spectra of axial mode groups in the radiation from CW GaAIAs diode lasers. Opt Quant Electron 9, 233–239 (1977). https://doi.org/10.1007/BF00619734

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  • DOI: https://doi.org/10.1007/BF00619734

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