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Propagation of a junction laser ? 


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The propagation characteristics of junction-laser beams are investigated in Part III of the work by Zachos and Dyment . The spatial field distributions of the beams are described mathematically, taking into account beam-broadening effects produced by the lens and phase variations at the laser mirror along the junction plane. These phase variations, previously unreported, are deduced from measurements beyond the slit, showing a greater beam expansion along the junction plane than can be explained by the lens system alone. Near threshold, a current-dependent phase lag of a few degrees is observed at a distance of one beamwidth from the center of the mirror illumination. This study provides a correlation between theory and experiment, with detailed beamwidth measurements in the Fresnel and Fraunhofer regions of the diffraction field .

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The paper discusses the propagation of injection laser pulses in an optical fiber, taking into account the frequency modulation caused by heating a p-n junction.
The paper investigates the spatial field distributions and propagation characteristics of junction-laser beams, describing them mathematically and correlating with experimental measurements.
The provided paper does not discuss the propagation of a junction laser.
The paper does not discuss the propagation of a junction laser. The provided paper is about the investigation of spatiotemporal dynamics of optical pulses in planar waveguides with Kerr nonlinearity.
The provided paper does not mention anything about the propagation of a junction laser.

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