Picosecond-light-pulse energy oscillations as demonstration of synchronization of local deviations, created by the pulses, from quasi-equilibrium electron distribution in GaAs

 

N. N. Ageeva, I. L. Bronevoi, D. N. Zabegaev, A. N. Krivonosov

Kotel’nikov Institute of Radioengeneering and Electronics of Russian Academy of Sciences, Mokhovaya 11-7, Moscow 125009, Russia

 

The paper is received on February 24, 2017

 

Abstract. Energy absorption  of picosecond probing light pulse in GaAs was studied as a function of delay  between the pulse and picosecond optical pumping. The pumping leds to intrinsic picosecond stimulated emission in GaAs. As shown in our previous works, interaction of the probing and intrinsic radiation pulses leds to oscillations of . The physical mechanism of this interaction was not clarified at that time. In the present paper, we found that the oscillating dependences  had similar forms only for certain combinations of interacting pulses’ energies. This allows us to assume that the interaction is a process of synchronization of oscillating deviations (induced by the pulses) of carrier population from their quasi-equilibrium distribution. This process is the way to maintain detailed balance in GaAs. It leads to pulse energy oscillations as a function of experimental parameters that define initial differences of the amplitude, frequency and phase of the population oscillations.

Key words: semiconductor, picosecond, stimulated emission, self-modulation, oscillations, absorption of light, electron-phonon interaction, stimulated Raman scattering of light, synchronization, coupled oscillators.

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For citation:

N.N.Ageeva, I.L.Bronevoi, D.N.Zabegaev, A.N.Krivonosov. Picosecond-light-pulse energy oscillations as demonstration of synchronization of local deviations, created by the pulses, from quasi-equilibrium electron distribution in GaAs Zhurnal Radioelektroniki - Journal of Radio Electronics, 2017, No. 3. Available at http://jre.cplire.ru/jre/mar17/2/text.pdf. (In Russian)