Self-synchronization of the modulation of energy-levels population with electrons in GaAs induced by picosecond pulses of probe radiation and intrinsic stimulated emission
- Authors: Ageeva N.N.1, Bronevoi I.L.1, Zabegaev D.N.1, Krivonosov A.N.1
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Affiliations:
- Kotel’nikov Institute of Radioengineering and Electronics
- Issue: Vol 50, No 10 (2016)
- Pages: 1312-1321
- Section: Spectroscopy, Interaction with Radiation
- URL: https://journals.rcsi.science/1063-7826/article/view/198028
- DOI: https://doi.org/10.1134/S106378261610002X
- ID: 198028
Cite item
Abstract
Picosecond optical pumping leads to the initiation of intrinsic picosecond stimulated emission in GaAs. As was established previously, due to the interaction of pulses of probe radiation with those of intrinsic emission, the dependence of the absorption α of the probe pulse on its delay τ with respect to the pump pulse is modulated with oscillations. It is found that the oscillatory dependences α(τ) have a similar shape only in the case of certain combinations of energies of the interacting pulses. As a result, it is assumed that the above interaction is, in fact, a synchronization of modulations (formed by pulses) of charge-carrier populations at energy levels; this synchronization occurs in the direction of the reconstruction of detailed equilibrium. The real-time picosecond self-modulation of the absorption α is measured for the first time. The characteristics of this self-modulation as well as absorption α and intrinsic emission self-modulation characteristics measured previously by correlation methods are now accounted for by the concept of synchronization.
About the authors
N. N. Ageeva
Kotel’nikov Institute of Radioengineering and Electronics
Email: bil@cplire.ru
Russian Federation, Moscow, 125009
I. L. Bronevoi
Kotel’nikov Institute of Radioengineering and Electronics
Author for correspondence.
Email: bil@cplire.ru
Russian Federation, Moscow, 125009
D. N. Zabegaev
Kotel’nikov Institute of Radioengineering and Electronics
Email: bil@cplire.ru
Russian Federation, Moscow, 125009
A. N. Krivonosov
Kotel’nikov Institute of Radioengineering and Electronics
Email: bil@cplire.ru
Russian Federation, Moscow, 125009