&lt;title&gt;Spatiotemporal dynamics in the near field of a 980-nm ridge waveguide pump laser diode&lt;/title&gt;

Ziegler, M.; Miltenyi, E.; Muenkel, M.; Greif, J.; Jennemann, G.; Fischer, Ingo; Asonen, H.; Elsaesser, Wolfgang E.

doi:10.1117/12.275608

Cited by 2 publications

(4 citation statements)

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“…The observed typical relaxation oscillation behavior is confirmed by the expected linear increase of the square of the resonance frequency as a function of the intensity, however, with a saturation behavior at higher intensities, which compares well with model calculations based on rate equations including gain saturation. 23 This regime has been already studied in detail. 23 If the current is increased to intermediate pumping levels, the laser shows regular spatiotemporal dynamics, which can be tuned by the applied current.…”

Section: Experimental and Theoretical Investigationsmentioning

confidence: 95%

“…23 This regime has been already studied in detail. 23 If the current is increased to intermediate pumping levels, the laser shows regular spatiotemporal dynamics, which can be tuned by the applied current. At even higher pumping levels we find irregular spatiotemporal dynamics.…”

Section: Experimental and Theoretical Investigationsmentioning

confidence: 95%

“…For measurement of the near field on a picosecond time scale, we used a single-shot streak camera, which has proved to be a valuable tool for the study of the dynamic behavior of semiconductor lasers. [15][16][17][21][22][23] Our simulations were carried out on the basis of laterally resolved rate equations. In what follows, we briefly describe the laser structure and laser performance and our experimental setup.…”

Section: Introductionmentioning

confidence: 99%

“…This method yields the modes of the complex optical field together with their respective oscillation frequencies, in contrast to eigenmode analysis applied to intensity traces, which permits the estimation of the system's number of degrees of freedom. 17,23 The resultant N eigenvectors P j (x) of the complex eigenmode analysis are used for an expansion of the original complex optical field:…”

Section: Lateral Effects Are Introduced By Lateral Coupling Throughmentioning

confidence: 99%

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Spatiotemporal emission dynamics of ridge waveguide laser diodes: picosecond pulsing and switching

et al. 1999

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We report on the observation of spatiotemporal dynamics on picosecond time scales for an antireflection-coated ridge waveguide laser diode that is only 5 m wide. Depending on the applied current, three dynamic regimes can be distinguished, showing the transition from regular to irregular spatiotemporal emission. We discuss the underlying mechanisms and develop a comprehensive understanding of this dynamic behavior. First, for moderate pumping, we find a typical relaxation oscillation behavior of the fundamental lateral mode. Second, at intermediate current levels, we observe lateral high-frequency switching of the output intensity between the left-hand and the right-hand parts of the active region. The switching frequency increases linearly with the excitation current and is of the order of 10 GHz. We give evidence that this switching behavior results from the coexistence and interaction of fundamental and first-order lateral modes that belong to different longitudinal mode families. The observed dependence of the switching frequency on the bias current can be attributed to a change in the width of the emission profile. Third, at high pumping levels, irregular spatiotemporal dynamics with the coexistence of low-and high-frequency spatial switching and temporal pulsations can be found. Finally, the influence of waveguide design and consequences for applications are considered and discussed.

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Section: Experimental and Theoretical Investigationsmentioning

confidence: 95%

Section: Experimental and Theoretical Investigationsmentioning

confidence: 95%