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Coherence and Noise Properties of Gain-Switched Fabry-Perot Semiconductor Lasers

Griffin, R.A., Jackson, D.A. and Sampson, D.D. (1995) Coherence and Noise Properties of Gain-Switched Fabry-Perot Semiconductor Lasers IEEE Journal on Selected Topics in Quantum Electronics, 1 (2). pp. 569-576.

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We present a detailed study of the optical power spectrum and coherence properties of Fabry-Perot semiconductor lasers under gain-switched operation. We demonstrate that the distribution of longitudinal modes under gain-switched operation is described to high accuracy by a Gaussian envelope, in contrast to continuous wave (CW) lasers where the distribution is Lorentzian. We show that the minimum values of coherence under gain-switched operation are two orders of magnitude lower than under CW operation. We also demonstrate that intensity noise generated through interferometric conversion of mode partition noise is markedly different for gain-switched and CW lasers. The results are important for a host of potential applications that use low-coherence interferometry.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences
Faculty of Health and Medical Sciences
Authors :
Griffin, R.A.
Jackson, D.A.
Date : 1995
DOI : 10.1109/2944.401243
Uncontrolled Keywords : Continuous wave lasers, Fabry-Perot interferometers, Fourier transforms, Interferometry, Laser modes, Mathematical models, Spurious signal noise, Coherence lobes, Fabry Perot lasers, Gain switched laser, Gaussian envelope, Interferometric system, Semiconductor lasers
Depositing User : Maria Rodriguez-Marquez
Date Deposited : 12 Jun 2018 10:45
Last Modified : 19 Sep 2018 11:33

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