Abstract
A new simple method based on the optical feedback phenomena is proposed for evaluating the slope of the modulation characteristic (generation frequency versus injection current) of a semiconductor laser. The slope is determined using the frequency of a signal formed as a result of the interference between the initial and scattered radiation, which is measured at the output of a photodiode built into the laser. The proposed method is theoretically justified, the scheme of realization is described, and the results of experimental verification using a particular laser diode are presented.
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V. S. Sobolev, E. N. Utkin,, A. M. Shcherbachenko, A. A. Stolpovskii, and G. A. Kashcheeva, Avtometriya 40(6), 4 (2004).
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Original Russian Text © V.S. Sobolev, E.N. Utkin, 2009, published in Pis’ma v Zhurnal Tekhnicheskoĭ Fiziki, 2009, Vol. 35, No. 7, pp. 28–34.
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Sobolev, V.S., Utkin, E.N. Using the optical feedback regime for evaluating the slope of the modulation characteristic of a semiconductor laser. Tech. Phys. Lett. 35, 306–308 (2009). https://doi.org/10.1134/S1063785009040051
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DOI: https://doi.org/10.1134/S1063785009040051